2024-03-29T06:30:47Z
http://www.sciencepubco.com/index.php/IJAG/oai
oai:ojs.pkp.sfu.ca:article/755
2014-11-13T03:04:51Z
IJAG:ART
"130503 2013 eng "
2311-7044
dc
The Dispersion Algorithm: Consideration of Bathymetry in 2D Mesh generation in Ocean Modeling
Feizi Chekab, Mohammad A.
Amirkabir University of Technology
Ghadimi, Parviz
Amirkabir University of Technology, Iran
Ghassemi, Hassan
at Amirkabir University of Technology.
The Dispersion Algorithm has been further developed and improved to control locally the distribution of nodes in the computational domain. This improvement allows the user to take into consideration the effect of the bathymetry and other physical factors while maintaining the previous global capability of the original Dispersion Algorithm. It has been demonstrated that, by a simple adjustment of the value of the key parameter r(n) resulting in a new parameter R(n, x, y), any physical factor could be taken into account for the application of the proposed Algorithm in different fields of engineering. This concept has been explored to particularly include the bathymetry of the geometrical domain as an important physical factor in ocean modeling. The applicability and efficiency of the proposed algorithm has been demonstrated using various actual geometries. The bathymetry of the Persian Gulf, the Caspian Sea and the Gulf of Mexico have been successfully modeled, analyzed, and meshed by the algorithm.
Science Publishing Corporation
2013-05-03 02:05:50
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International Journal of Advanced Geosciences; Vol. 1 No. 1 (2013)
eng
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oai:ojs.pkp.sfu.ca:article/842
2014-11-13T03:04:52Z
IJAG:ART
"130513 2013 eng "
2311-7044
dc
Sedimentology and palaeogeography of conglomerates from the Aghajari Formation in Zagros Basin, SW Iran
Sahraeyan, Mohammad
Department of geology, Khorasgan (Esfahan) Branch, Islamic Azad University, Esfahan, Iran
Conglomerates, the lithified equivalent of gravels alternate with sandstones and mudstones in the upper parts of the Aghajari Formation in the Zagros Basin, southwestern Iran. The thickness of the Aghajari Formation in this studied area is 2221 meters. Polymictic conglomerates form excellent outcrops in the central parts of the study area. From the view of its (coarse) clast composition, the Aghajari Formation consists of two types of conglomerates: 1) limestone-chert clast-supported conglomerate (LCCSC) and 2) limestone clast-supported conglomerate (LCSC). The chronological and spatial relationships between these conglomerates are not easily determined caused by existence some thrust faults at their approximate boundaries. In the vertical succession, various lithofacies were recognized; their textural characteristics and sedimentary structures suggest a non-marine depositional system as they match with standard lithofacies of meandering rivers. Epirogenic movements in the region started in the Oligocene, showed by a polymictic conglomerate beds at the Jahrum-Asmari Formation boundary. These movements then changed to orogenic ones with the depositioning gravelly alluvium now known as Aghajari (upper parts) Formation.
Science Publishing Corporation
2013-05-03 02:05:50
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International Journal of Advanced Geosciences; Vol. 1 No. 1 (2013)
eng
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oai:ojs.pkp.sfu.ca:article/1169
2014-11-13T03:04:54Z
IJAG:ART
"131112 2013 eng "
2311-7044
dc
Sub-surface diagnosis for tantalite in Iseyin SW, Nigeria using magnetic survey method
Ikusika, A
Adeyemi College of Education, Ondo.
Popoola, O.I
University of Ibadan, Ibadan.
A magnetic survey was carried out at a site in Iseyin, Oyo state. The study delineates possible structures that may favour the accumulation of tantalite, a magnetic mineral. A ground based technique was employed using proton precision magnetometer G-856 AX to deduce subsurface lithology and structure that may indirectly aid the identification of mineralized rocks. A total of ten geophysical traverses were established in W-E direction in the study area. The acquired magnetic field data were corrected for drift. Qualitative and quantitative interpretations were adopted to obtain the negative peak value and the maximum positive peak value. The contour maps, image maps and the 1-grid maps present the sub-surface picture of the geological structures that are assumed to habour the metallic minerals. The study area is underlain by a rock unit of accumulated minerals. The overburden is relatively thin within the study area and the metallic minerals are in disseminated quantity and at a shallow depth.
Science Publishing Corporation
2013-11-12 12:48:15
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http://www.sciencepubco.com/index.php/IJAG/article/view/1169
International Journal of Advanced Geosciences; Vol. 1 No. 2 (2013)
eng
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oai:ojs.pkp.sfu.ca:article/1594
2014-11-13T03:04:55Z
IJAG:ART
"140106 2014 eng "
2311-7044
dc
Lithology and porosity heterogeneity prediction using multiple seismic attributes on 3-d surveys: an example from Edim oil field, Niger delta
Alao, Peter Ayomide
Department of Geology, Institute of Earth and Environmental Sciences, University of Freiburg, Germany
Olabode, Solomon
Department of Applied Geology,
Federal University of Technology Akure
Rank: Sub-Dean, School of Earth and Mineral Sciences
Postal Address: P.M.B. 704, Akure, Ondo State.
Nwoke, Ernest Chibugo
School of Earth, Atmospheric and Environmental Sciences,
The University of Manchester, United Kingdom Oxford Rd, Manchester, Greater Manchester M13 9PL, United Kingdom
Ata, Abubakar
Department of Geology,
University of Malaya Kuala Lumpur, Malaysia. Kuala Lumpur, Federal Territory of Kuala Lumpur, Malaysia
This research work presents the result of integrating three-dimensional (3-D) seismic attributes and log data to determine rock property (porosity and lithology) distribution of cretaceous-aged sandstones from Edim field, in the Niger Delta. The rocks are composed of thick sandstones which are resolvable in the seismic sections and possessing good petrophysical attributes for consideration as economic reservoirs. The method used was to invert the seismic data to elastic rock properties and then interpret these rock properties in terms of reservoir properties. Three seismic attributes which are considered important in exploration for fault-related reservoirs was employed. This study explores the stratigraphy and structure of the reservoir using 3-D seismic data and multiple seismic attributes to predict porosity and the net-to-gross. By predicting porosity and lithology using seismic attributes, lateral distributions of porosity that can be used to guide development and exploration drilling for optimal hydrocarbon recovery were obtained. The sites of highest porosity and net-to-gross were found to be along and within the fault zones. This study has indicated a close relationship between faulting and reservoir development by examining relationships using 3-D seismic data. Methods and results presented in this study can be used to explore and develop fault-related reservoirs in the Niger Delta and other similar geologic settings.
Keywords: Porosity, lithology, net-to-gross, predict, seismic attribute, Niger delta.
Science Publishing Corporation
2014-01-06 12:49:38
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International Journal of Advanced Geosciences; Vol. 2 No. 1 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/1666
2014-11-13T03:04:56Z
IJAG:ART
"140208 2014 eng "
2311-7044
dc
Metamorphism and deformation of mafic and felsic rocks in Bhavani Shear Zone, Tamilnadu, India
Prian, Raja K
Annamalai University
Singh, Kuldeep
Kumar, M. Vinoth
Kumar, R. S.
In southern India, Nilgiri block (NB) is separated from Western Dharwar Craton (WDC) and Palghat Cauvery Shear Zone (PCSZ) by Moyar and Bhavani shear zone (MSZ and BSZ) respectively. The Archaean high grade Bhavani shear is composed predominantly of meta-gabbro, meta-anorthosite and garnetiferrous gabbro, along with pyroxenite and amphibolites. The mafic rocks associated with hornblende gabbro and pyroxenite, retain magmatic structures and show evidence of major change in grain size and shapes granofelses of igneous relicts. The BSZ and MSZ are steeply-dipping thrusts, the Moyar shear in predominantly dip-slip transport. Gabbro majorly consists, assemblage of almandine-pyrope garnet and augite clinopyroxene as phenocryst with coexisting porphyroblasts texture. Geological structure relations combined with petrographical analysis from Moyar Bhavani shear zone (MBSZ) suggest that the gabbroic metamorphism was related to formation of the shear zone. Intermingled gabbroic rocks escaped metamorphism because they remained magmatic to lower temperatures, and experienced shorter and lower temperature sub-solidus cooling intervals. The felsic rocks underwent relatively high temperature solid-state deformation, as indicated by gabbro replacing K-felspar and subgrain patterns in quartz. The felsic rocks were deformed in the solid state because of their high proportion of relatively weak minerals (quartz and biotite), whereas, the mafic rocks mostly escaped sub-solidus deformation, except in local high-strain zone of their high proportion of relatively (hornblende and plagioclase) strong minerals.
Keywords: Amphibolite; Anorthosite; Bhavani Shear Zone; Pyroxenite; Garnet and Gabbro.
Science Publishing Corporation
2014-01-06 12:49:38
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International Journal of Advanced Geosciences; Vol. 2 No. 1 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/1696
2014-11-13T03:04:58Z
IJAG:ART
"140131 2014 eng "
2311-7044
dc
Groundwater quality assessment from Tarali river sub basin of Krishna river basin, western Maharashtra (India)
Golekar, Rushikesh
North Maharashtra University Jalgaon
Bartakke, Vikrant Vijaykumar
North Maharashtra University Jalgaon
Patil, Sanjaykumar Narayan
North Maharashtra University Jalgaon
Baride, Mukund Vasant
Z. B. Patil College Dhule (India)
The aims of present study to assessing drinking and irrigation water quality in Tarali river sub basin of Krishna river Basin, Western Ma-harashtra (India). The study area is lying between Latitude 17°23' to 17°38' N and Longitude 73°48' to 74°27' E. The area having steep to moderate slope and elevation ranges from 584-1171m above the Mean Sea Level (MSL). Basin exhibits hilly and mountain terrain forming ridges and Western Ghats with deep valley, plateaus and plain. The whole area can obtained in topographical sheets i.e. 47 G/14, 47 G/15 47 K/2, 47 K/3 covering area about 627 sq.km, acquired from survey of India. The climate of basin is semi-arid to sub-humid climate. Average annual rainfall is 800-1800mm in the study area. Field work was carried out during post monsoon 2012 (winter) and collect the groundwater samples from the both bank of Tarali River Sub Basin. Hydrogeochemical analysis was carried out using standard analytical techniques. A total 20 groundwater samples were collected from public water supply wells in the area under study. Draw the various plots on the basis of obtained results by using Aquachem geoscientific software.
Keywords: Groundwater geochemistry, piper trilinear diagram, Wilcox diagram, box whisker plot, Tarali river sub basin, western Maharashtra (India).
Science Publishing Corporation
2014-01-06 12:49:38
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International Journal of Advanced Geosciences; Vol. 2 No. 1 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/1731
2014-11-13T03:04:59Z
IJAG:ART
"140222 2014 eng "
2311-7044
dc
Geomagnetic investigation of mineral rocks at Awo, Osun state, southwest Nigeria
Ojo, Akintayo Olufemi
Osun State College of Education, Ilesa, Nigeria.
Popoola, O. I.
University of Ibadan, Ibadan, Nigeria
A ground magnetic study was carried out to identify the locations and depths of formation of different magnetic minerals at Awo town, Egbedore local government area of Osun State, Southwest Nigeria. On the study area, ten magnetic traverses were occupied with 10m spacing in between each traverses and 10m station intervals. The traverses were 100m long orientated in East - West direction. After correcting the magnetic data for the effect of drift and regional magnetic variation of the study area, the calculated magnetic anomalies were used in plotting the 3D view maps, and carrying out forward and inverse calculations (3D inversion) of the subsurface of the study area using MAG3D inversion program. The interpretation of each profile (traverses) and 3D inversion shows variable anomaly, which is indicative of contrast in the susceptibility of the subsurface. The results possibly suggest that mineral rocks with high magnetic susceptibility values (between 7.15 and 4.72) such as Columbite and Tantalite were buried from the centre towards the south western region of the study area at depth between 20m and 90m; while mineral rocks with low magnetic susceptibility values (between – 7.40 and – 5.00) such as Sandstone, Quartz and Calcite were harboured at the north western region at depth between 75m and 100m. More than fifty percentage of the volume has an intermediate magnetic susceptibility values (between – 4.00 and 4.00) indicating that the region is predominantly a schist pegmatite vein that probably contains mineral deposits such as Beryl, Tourmaline and Mica in both disseminated and massive quantities.
Keywords: Awo town, magnetic minerals, magnetic susceptibility, 3d views maps, 3d inversion.
Science Publishing Corporation
2014-01-06 12:49:38
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International Journal of Advanced Geosciences; Vol. 2 No. 1 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/1921
2014-11-13T03:05:00Z
IJAG:ART
"140309 2014 eng "
2311-7044
dc
Mineralogical studies of plagioclase feldspar in Kadavur Anorthosite Complex, Tamilnadu
Kumar, M.Vinoth
Dept. of Earth sciences
Annamalai University
Annamalai Nagar-608002.
Kumar, R. S.
Rajaprian, K.
Singh, Kuldeep
The differences in the type of plagioclase twinning in igneous and metamorphic rocks are described. Plagioclase twins are divided, from a Petrological point of view, into the c-twin and the A-twin. Frequencies of the twinned plagioclase and twin types in various endogenous rocks are described and the genesis of the C-twin which characterizes the volcanic and plutonic rocks is interpreted. Lastly, a plagioclase twin method for determining the origin of various granitic rocks is proposed and discussed. Extremely dense Carlsbad twins at the unit-cell scale indicate that additional energy caused by the Carlsbad twin boundaries in highly disordered anorthite is lower than that caused by albite twin boundaries. We propose that for anorthite with an initially disordered structure the total energy induced by Carlsbad twinning is lower than that caused by albite twinning and higher than that caused by albite twinning in anorthite with an initially ordered structure.
Keywords: Mineralogical Studies, Plagioclase Twinning Law, Kadavur Anorthosite Complex.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/1951
2014-11-13T03:05:02Z
IJAG:ART
"140315 2014 eng "
2311-7044
dc
Assessment of groundwater quality in eastern part of lower vellar basin, cuddalore district, tamilnadu, India
Dushiyanthan, Chinnadurai
Research Scholar,
Department of Earth Sciences
Annamalai university
Raja Kumar T, Jeyavel
K, Karthikeyan
B, Thiruneelakandan
D, Davidraju
R, Suresh
An attempt has been made in this present work to determine the groundwater quality in eastern parts of Lower vellar basin, Cuddalore district. Totally, ten groundwater samples were collected from bore well during premonsoon seasons and analyzed for physicochemical parameters to understand the hydro geochemistry of the water. The analysis results were interpreted with various geochemical diagrams such as Piper trilinear plot and USSL classification and Gibbs diagram. The range of chemical concentration of cations such as Ca, Mg, Na, k and anions like HCO3, Cl, and SO4 are 25.0 to 90.0 mg/l, 20.6 to 117.5 mg/l, 11.9 to 95.0 mg/l, 1 to 130 mg/l and 25 to 197 mg/l, 111.0 to 275.0 mg/l, 0.13 to 0.78mg/l respectively. To understand the geochemical facies interpreted with Piper Trilinear diagram and Gibb’s dia-grams. The graphical interpretation of Piper trilinear diagram shows Ca, Na facies followed by Cl, So4, and HCO3 facies. Similarly, USSL and Gibb’s diagrams represent C3S1 field and considerable number of samples in rock water interaction field. In the present study to under-stand groundwater quality of lower vellar basin.
Keywords: Groundwater, Hydro Geochemistry, Lowervellarbasin, Groundwater Quality, Hydrogeology, Premonsoon.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/2151
2014-11-13T03:05:03Z
IJAG:ART
"140514 2014 eng "
2311-7044
dc
Petro physical parameter studies for characterization of gas reservoir of Narsingdi gas field, Bangladesh
Towfiqul Islam, Abu Reza Md.
Begum Rokeya University, Rangpur-5400, Bangladesh
Islam, Md.
Universiti of Brunei Darussalam, Gadong, 1410, Brunei
Tasnuva, Anjum
Begum Rokeya University, Rangpur, 5400, Bangladesh
Biswas, Raman
Patuakhali Science and Technology University, Patuakhali, 8602, Bangladesh.
Jahan, Khurshida
Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.
The study focused on quantitative analysis of petrophysical parameters to characterize the reservoir of Narsingdi Gas Field, Bangladesh using well log data. 12 permeable zones were identified, out of which 5 zones were gas-bearing. Shale volume of those zones were averaged at ranged from 14% to 25% indicate reservoir consists of sand dominated lithology and less influence the water saturation for the study well. Porosity of these zones were averaged as 27 % which was within the ranged for very good gas accumulation. Water saturation values were less than 35 % which calculated by using three equations. Gas saturation values were more than 65 % revealed that high gas accumulation in these gas reservoirs. Permeability was averaged at ranged from 32 mD to 55 mD which was within limit for good gas accumulation. Bulk volume of water was averaged at ranged from 0.030 to 0.038 indicate fine grained sand occupied by gas reservoirs were more or less at irreducible water condition. Gas was moveable as indicated by gas moveability index < 0.7. The study suggests that gas reservoir is potential for gas production and accumulation. The study results will contribute in future gas field development programme.
Keywords: Gas Moveability Index, Narsindhi Gas Field, Petrophysical Parameter, Reservoir Potential and Well Log Data.
Science Publishing Corporation
2014-03-09 13:32:14
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http://www.sciencepubco.com/index.php/IJAG/article/view/2151
International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/2213
2014-11-13T03:05:05Z
IJAG:ART
"140429 2014 eng "
2311-7044
dc
Mapping of groundwater quality using GIS technique in the east coast of Tamilnadu state and Pondicherry union territory, India
Kumaravel, S.
Gurugnanam, B.
Bagyaraj, M.
Venkatesan, S.
Suresh, M.
Chidambaram, S.
Jeyavel Rajakumar, T.
Gnanachandrasamy, Gopalakrishnan
Ph.D Research scholar
The objective of this study is to determine temporal and spatial changes in groundwater quality and sources of contamination. An attempt has been made in the present study to elucidate the quality of the groundwater in terms of physical and chemical parameters in the post and pre monsoon season in the east coast of Tamilnadu state and Pondicherry Union Territory. Geologically, the study area consists of alluvium, Cuddalore sandstone and charnockite. 37 groundwater samples were collected from bore wells and analyzed for pH, TDS, Ca+, Mg+, Na+, K+, Cl-, HCO3-, SO4- and F-. The analyzed values were evaluated and compared with World Health Organization (2004) for drinking water. It was observed that, Ca+, Mg+, Na+, K+, Cl-, SO4- and F- are within the acceptable limit for drinking purposes in both the seasons except few sample locations. To identify the suitable zones of drinking water, overlay analyses were carried out using ArcGIS and classified as good, medium and poor zones for both the seasons. The zone of good quality of the groundwater for post and pre monsoon season in the study area was 118.93 km2 and 88.39 km2 respectively.
Keywords: Spatial Changes, Groundwater Quality, Chemical Parameters, Drinking Purposes, ArcGIS.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/2294
2014-11-13T03:05:06Z
IJAG:ART
"140510 2014 eng "
2311-7044
dc
Evaluation of drinking water quality index (DWQI) and its seasonal variations in hard rock aquifers of Madurai district, Tamilnadu
Thivya, C.
Research Scholar
Department of Earth Sciences
Annamalai University
Annamalai Nagar-608002
Chidambaram, S.
Professor
Department of Earth Sciences, Annamalai University
Annamalai Nagar-608002, Tamilnadu
Thilagavathi, R.
Research Scholar
Department of Earth Sciences, Annamalai University
Annamalai Nagar-608002, Tamilnadu
India
Nepolian, M.
Research Scholar
Department of Earth Sciences, Annamalai University
Annamalai Nagar-608002, Tamilnadu, India
V.S, Adithya
Research Scholar
Department of Earth Sciences, Annamalai University
Annamalai Nagar-608002, Tamilnadu, India
Groundwater is an important source of water supply throughout the world. The quantity and the suitability of groundwater for human consumption are determined by its physical, chemical and bacteriological properties. There are several difficulties for the accessibility of groundwater resources in hard rock areas as wide and erratic variation of essential parameters (i.e., fractures, joints, and porosity) characterizes the groundwater system. Madurai district is such one among them with hard rock regions. A study was carried out in this district of Tamil Nadu for four seasons (Pre-Monsoon, Southwest monsoon, North east monsoon and Post-monsoon), India to assess the drinking water quality and their seasonal variations through DWQI (Drinking water quality index). In order to obtain a synoptic view of quality of groundwater for drinking purpose, a total of 216 groundwater samples for four seasons are collected representing the entire district. pH, temperature, TDS and conductivity of the water samples were measured in the field using a portable water-analysis kit. Sampling and analysis was carried out using standard procedures.The physicochemical parameters considered for the Drinking water quality index (DWQI) include pH, TDS, cations such as Ca2+, Mg2+, Na+ and K+, anions such as Cl?, SO42?, HCO3?, F? and NO3?, Heavy metals like U, Zn, Cd, pb and Cu were also considered for DWQI. The poor water quality may be due to the presence of excess amounts of TDS, Na+, HCO3?, and Cl? in the study area. The spatial distribution of DWQI indicates that poor quality of drinking water is observed in patches in different regions and it varies according to the seasons. The change in DWQI in the region implies the seasonal variations of monsoon may be due to leaching of ions, weathering and ion exchange processes.
Keywords:Drinking Water Quality Index, Weathering, Leaching, Geochemistry.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/2304
2014-11-13T03:05:07Z
IJAG:ART
"140610 2014 eng "
2311-7044
dc
Hydrogeophysical assessment of some parts of Anambra basin, Nigeria
Chinwuko, Augustine
Nnamdi Azikwe University, Awka
Anakwuba, Emmanuel
Nnamdi Azikwe University, Awka
Nwokeabia, Nkechi
Nnamdi Azikwe University, Awka
Onyekwelu, Clement
SunLink Petroleum Limited Lagos, Nigeria
An electrical resistivity investigation has been carried out in thirteen communities within the Anambra Basin in order to determine the depth to the water table and groundwater flow in the area. Vertical electrical sounding (VES) curves were obtained across the area using the Schlumberger configuration. Both manual and computer interpretations of the resistivity data show basically three to five geo-electric units within the study area. The lowermost layer with the resistivity range of 144 - 1500 Ohm-m and depth of 14.9 – 166.41 m represents the aquifer. The water table map indicates multi flow direction and correlates favourably with the topography of the area. It was observed that the hydraulic conductivity obtained ranges from 6.67 x 10-4 to 6.944 x 10-3 m/day while the transmissivity ranges from 0.048 to 0.590 m2/day within the study area.
Keywords: Groundwater, Resistivity Survey, Aquifer, Exploration, Schlumberger, Sounding.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/2305
2014-11-13T03:05:08Z
IJAG:ART
"140610 2014 eng "
2311-7044
dc
Interpretations of aeromagnetic data over lokoja and environs, Nigeria
Chinwuko, Augustine
Nnamdi Azikwe University, Awka
Ojonugwa, Usman
Nnamdi Azikwe University, Awka
Onwuemesi, Ajana
Nnamdi Azikwe University, Awka
Anakwuba, Emmanuel
Nnamdi Azikwe University, Awka
Okonkwo, Churchill
Department of Physics, Federal College Of Education (Technical), Umunze, Nigeria
Ikumbur, Emmanuel
Department of Geology, Benue State Polytechnic Ugbokolo, Nigeria
Total field aeromagnetic anomalies over Kogi-Auchi area have been evaluated in order to map the magnetic lineaments and estimate the depth to basement (sedimentary thicknesses). Aeromagnetic and radiometric data of the area (sheet 246, 247, 266 and 267) were acquired, digitized and analyzed. The slope methods were applied in the analysis of the residual contour map. The result obtained using the slope methods reveals two depth sources in the study area; on the average the deeper magnetic sources range from 2.3 to 4.9 km, while the shallower magnetic sources range from 1.1 to 1.6 km. These shallower sources are probably due to the presence of igneous intrusives and/or magnetized bodies within the sedimentary cover. Visual study of the residual anomaly map shows the presence of igneous intrusive in the entire North and Southwestern part of the study area. The One Vertical Derivative (1VD) lineament map shows the Fault trending in Northwest-Southwest (NW-SW) and Northeast-Southwest (NE-SW) direction and this conforms to the Niger-Benue basin itself. Hydrocarbon exploration is not recommended since the area has low thickness of sediment on the average. All this deduction were reached after due consideration of qualitative and quantitative interpretations supported by geological information of the area.
Keywords: Aeromagnetic Data, Radiometric Data, Lineament, Igneous Intrusives, Depth to Basement.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/2452
2014-11-13T03:05:10Z
IJAG:ART
"140520 2014 eng "
2311-7044
dc
Identification and mapping of the water-logged areas in Purba Medinipur part of Keleghai river basin, India: RS and GIS methods
Sahu, Abhay
Assistant Professor, Department of Geography, University of Kalyani, Kalyani, Nadia, West Bengal
The prime objective of this paper is to identify and mapping of the water-logged areas applying methods of Remote Sensing (RS) and Geographical Information System (GIS) in the part of Purba Medinipur district of Keleghai river basin, India. For this purpose, USGS Landsat 8 imagery (4th November, 2013) and topographical sheets (scale - 1:50,000; year - 1970) have been used here, processing through Arc GIS 9.3 and ERDAS Imagine 9.1, with field observations. A supervised classification of Landsat 8 imagery (2013) of the study area has been made after conversion of DN value to Top of Atmosphere (TOA) radiance value, and it is found that the amount of water-logged areas is 80-km2. Based on different maps, it is observed that the factors like relief, slope, embankment density and settlement density have disproportionate relationship and canal density has direct proportion with the spatial distribution of water-logged areas. Here, RS techniques like NDVI, NDWI and modified NDWI or NDMI have been followed to corroborate water-logged areas and finally to understand the relevance of these techniques toward mapping of the water-logged areas, a Correlation Matrix has been prepared using SPSS 20 software and in result they are acceptable for an understanding on water-logged areas as values of them are significantly correlated with canal density.
Keywords: Water-Logged Areas, Low-Lying Areas, Canal Density, RS Techniques, Correlation Matrix.
Science Publishing Corporation
2014-03-09 13:32:14
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http://www.sciencepubco.com/index.php/IJAG/article/view/2452
International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3011
2014-11-13T03:05:11Z
IJAG:ART
"140721 2014 eng "
2311-7044
dc
Assessment of drinking water related to arsenic and salinity hazard in Patuakhali district, Bangladesh
Biswas, Raman
Patuakhali Science and Technology University, Patuakhali
Roy, Dhiman
Patuakhali Science and Technology University, Patuakhali
Towfiqul Islam, Abu Reza Md.
Begum Rokeya University, Rangpur-5400, Bangladesh
Rahman, Md.
Patuakhali Science and Technology University, Patuakhali
Ali, Mir
Patuakhali Science and Technology University, Patuakhali
The present study was assessed arsenic and salinity hazard of groundwater for drinking purposes in Patuakhali district, Bangladesh. Total 14 deep tube wells were selected randomly for collecting water samples in the study area. PH, arsenic concentration, salinity and temperature of the water samples were measured by in situ field measurement, HANNA portable arsenic tool box, EC meter and thermometer respectively. The result revealed that the average temperature and PH of the study area were 27°C and 7.09 shows within the permissible limit according to WHO standard. The EC value was ranged from 520 to 1036.66 ? S/cm with an average value of 687.66 ? S/cm was falling within the drinking water quality DOE and WHO standard. The TDS values were ranged from 332.8-363.4 mg/l indicates that all the values are within the ranges for drinking purposes. The study was also shown that arsenic of the ground water samples were ranged between 0 to 335 ppb which are within permissible limit according to Bangladesh Arsenic Standard (BAS). Therefore, it can be concluded that the groundwater is slight to moderate suitable for drinking purposes in terms of arsenic and salinity hazards within the acceptable ranges. It is recommended that groundwater of the study area is good for health.
Keywords: Salinity Hazard, Suitability, Deep Tube Wells and Drinking Standard.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3267
2014-11-13T03:05:12Z
IJAG:ART
"140903 2014 eng "
2311-7044
dc
Peat stratigraphy mapping using ground penetrating radar and geotechnical engineering implications
Adepelumi, Adekunle
Obafemi Awolowo University
Akindulureni, John
Obafemi Awolowo University
Agih, Christian
Obafemi Awolowo University
Olubodun, Babakayode
Obafemi Awolowo University
Evinemi, Isaac
Obafemi Awolowo University
Ground Penetrating Radar (GPR) surveys was carried out in southwestern part of Lagos, Nigeria with a view of delineating the subsurface peat stratigraphy that would aid geotechnical engineering design of the appropriate soil stability processes . The GPR study was conducted along seven (7) parallel traverses trending E-W using the GSSI SIR-3000 200MHz monostatic shielded antenna. The mineralogy, micro-fabrics and morphology of the delineated stratigraphy was determined using the scanning electron microscope (SEM) and X-Ray diffraction (XRD) methods. The results obtained revealed the presence of five subsurface geological layers, distinct geomorphological features, and high, moderate and low amplitudes, to continuous and discontinuous planar radar facies structures. Borehole information confirms the occurrence of shallow peat and plastic clay layers beneath the area. SEM and XRD analyses of the field samples obtained showed the dominance of kaolinite, illite and quartz minerals in the clay/peat mapped. The derived engineering parameters suggest that the peats found in the area are fibrous peat with low strength and medium to low bedding stress. It is observed that the peat generally depict high compressibility value and low shear modulus. Our findings confirm the efficacy and relevance of GPR technique for pre-construction engineering investigations.
Keywords: Compressibility, GPR, Mineralogy, Peat Stratigraphy, Soil Stability.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3285
2014-11-13T03:05:13Z
IJAG:ART
"140925 2014 eng "
2311-7044
dc
Modeling water quality index to assess shallow groundwater quality for sustainable utilization in Southern India
Anbazhagan, Siddan
Periyar University, Department of Geology
Jothibasu, Arumugam
Periyar University
In sustainable groundwater study, it is necessary to assess the quality of groundwater in terms of drinking and irrigation purposes. The present study attempt to assess the groundwater quality through Drinking Water Quality Index (DWQI) and Irrigation Water Quality Index (IWQI) in hard rock aquifer system and sustainable water use in Uppar Odai sub-basin, Southern India. The quality of ground water in major part of the study area is generally poor. In order to understand the shallow groundwater quality, the water samples were collected from 24 dug wells. The primary physical and chemical parameters like potential Hydrogen (pH), Total Dissolved Solids (TDS), Total Hardness (TH), calcium (Ca), magnesium (Mg), sodium (Na), potassium (K), bicarbonate (HCO3), carbonate (CO3), cloride (Cl), sulphate (SO4), nitrate (NO3) and fluoride (F) were analyzed for DWQI. The secondary parameters of irrigation groundwater quality indices such as Sodium Adsorption Ratio (SAR), Sodium Soluble Percentage (SSP), Residual Sodium Carbonate (RSC), Permeability Index (PI), Corrosively Ratio (CR), Magnesium Adsorption Ratio (MAR) and Kellies Ratio (KR) were also derived from the primary parameter for IWQI. The DWQI and IWQI were classified into excellent to unfit condition of groundwater quality based on their Water Quality Index (WQI). The spatial distribution of DWQI (25%) and IWQI (58+26%) indicate that slightly unsustainable to sustainable state of groundwater quality. Due to this quality deterioration of shallow aquifer, an immediate attention required for sustainable development.
Keywords: Groundwater Quality, GIS, Water Quality Indices, Shallow Aquifer, Sustainable Development.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3348
2014-11-13T03:05:15Z
IJAG:ART
"140910 2014 eng "
2311-7044
dc
Groundwater geochemistry of shallow and deep aquifers from Jalgaon district, northern Maharashtra (India)
Baride, Mukund
Z.B. Patil College, Dhule - 424002 (India)
Patil, Sanjaykumar
North Maharashtra University, Jalgaon (India) – 425001
Golekar, Rushikesh
Shri Chhatrapati Shivaji College of Engineering, Shrishivajinagar (Rahuri Factory) Dist. Ahmednagar 437006 (M.S.), India
This paper contains assessment of groundwater quality with reference to drinking and agricultural use in Jalgaon district, Northern Maharashtra (India). In present study 53 groundwater samples were collected in post monsoon (2010) and pre monsoon period (2011) from different location of Jalgaon district. Analytical results of geochemical analysis of groundwater compare with World health Organization and Indian Drinking Water Standards. Groundwater quality of study area has been deteriorated predominantly due to over exploration and anthropogenic activities.
Geochemistry of groundwater shows that the Ca > Mg > Na > K and HCO3 > Cl > SO4 > CO32- trend. Most of the groundwater samples are observed as Ca-HCO3 Type. Groundwater samples of the study area show higher concentration of TDS (>1000 ppm), Cl (>1000 ppm), NO3 (>45 ppm), K (> 10 ppm), Ca (>200 ppm), HCO3 (> 600 ppm) and B (<1 ppm). Irrigation water quality has been inadequately affected by salinity hazards and residual soluble carbonate (RSC).
Keywords: Groundwater Geochemistry, Shallow and Deep Aquifers, Medical Geology, Irrigation Hazards, Deccan Trap, India.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3352
2014-11-13T03:05:16Z
IJAG:ART
"140920 2014 eng "
2311-7044
dc
The impact of coastal orography on profile wind
Moujane, Abderrahim
National Meteorology Direction, Casablanca, Morocco and Faculty of Sciences Ben M'Sick, Casablanca, Morocco
Bentamy, Abderrahim
Chagdali, Mohammed
Mordane, Soumia
The quality of the speed and direction of the surface wind issued from the regional model for weather forecasting "Aire Limitée Adaptation dynamique Développement International (ALADIN)", currently operational in the National Meteorological Direction (DMN), is studied in comparison with the 10 m observed speed and direction from meteorological stations and with new scatterometer wind products (QuikSCAT and Blended QuikSCAT). The series of average wind speed shows that ALADIN model could correctly reproduce the wind speed in the accented winds zones as well as in areas of reduced winds either on the coast or offshore (Moujane, et al, 2011). Some differences still existing between simulations and satellite measurements can be attributed to the nature of the QuikSCAT data used in this study. In fact, this data are daily, while the results of the ALADIN model are a grid values for each three hours reduced to a daily average. The simulated winds comply well reasonably with winds of QuikSCAT and QuikSCAT BLENDED throughout the study area, although significant differences are noted in the in situ and satellite observations. ALADIN model resolution is 0.17° whereas QUIKSCAT is only 0.5° and the spatial resolution of QUIKSCAT BLENDED is 0.25°, adding to these remarks the limitations of satellite measurement near the coast obtained with a precision of 2 ms-1. QuikSCAT face Aladin and QuikSCAT BLENDED confirm a high correlation reaching 0.9 throughout the area of study for the zonal and meridional wind component. Also, a high variability was observed with QuikSCAT compared to ALADIN and Blended during all seasons, it is of the order of 2 ms-1 to 2.5 ms-1 with a low difference of meridional wind which is about 0.5 ms-1 on the area of study found mainly near the coast in the north of the area. A marked relief effect was noticed in the figures of variability, which shows well the variability induced on the wind by the Caps, the bay and the islands.
Keywords: Aladin, Blended, In-Situ, Orography, Quikscat, Wind.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3388
2014-11-13T03:05:17Z
IJAG:ART
"140919 2014 eng "
2311-7044
dc
Microphysical characteristics of cumulus clouds as observed in some African countries
Merrouchi, Rabia
National Meteorological Service of Morocco
This paper analyses airborne measurements of several midlevel and mixed-phase cumulus clouds observed in different environments (maritime, continental, shallow and deep convection) obtained during the scientific experiments performed by national weather modification programs in Morocco and Burkina Faso. Three cases are documented in this paper presenting the synoptic meteorological situation leading to the formation and the development of the sampled clouds and the results of the measurements collected using instrumental aircrafts. Several passes were made at the top of the sampled clouds and reported data were collected and analysed describing the variability of the measured parameters at various altitudes and thus different temperature values (negative and positive temperatures). The dependency of the liquid water content to the temperature has been studied but also its variation with regard to the vertical velocity and to the total concentration number of cloud particles.
Keywords: Aircraft Measurements, Cloud Microphysics, Liquid Water Content, West African Monsoon.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3490
2015-05-12T15:37:37Z
IJAG:ART
"141103 2014 eng "
2311-7044
dc
Determination of rock elastic parameters using VP/VS relation-ship for escravos area, Niger delta, Nigeria
Ajayi, Tobiloba
Obafemi Awolowo University
Adepelumi, Abraham
Obafemi Awolowo University
Agih, Christain
Obafemi Awolowo University
The elastic properties of sedimentary rocks in the Escravos area, Niger delta, Nigeria, have been computed for six boreholes drilled to a maximum of 22 m. Compressional wave (Vp), Shear wave (Vs) velocities and density (?) values were computed for the lithologies at the six different boreholes. The elastic properties were estimated using the computed Vp, Vs and ? values. Empirical relations between the derived elastic and physical properties of the subsurface lithologies encountered in the boreholes were established. The results show three distinctive layers comprising Sand, Sandy clay and Clayey sand existing in the boreholes. The computed values of the elastic properties show that the formation encountered in the wells are moderately dense and saturated with water. A distinct linear relationship existing between Vp / Vs was observed; while an exponential relationship was derived for ?/Vs. Empirical relationships derived from this study for Vp - Vs is given as Vs = 0.902Vp - 1164, and for Vs - Poisson’s is given as ? = -1E-07Vs2 - 4E-05Vs + 0.502. The values of allowable bearing capacity and the settlement suggest that the study area is able to support engineering construction. Empirical relations established for Vp - Vs and Vs - Poisson’s is characteristics of sedimentary terrain, and can be used within the Escravos area, Niger Delta, Nigeria.
Keywords: Allowable Bearing Capacity, Elastic Properties, Empirical Relations, Settlement.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3501
2014-11-13T03:05:19Z
IJAG:ART
"141003 2014 eng "
2311-7044
dc
Groundwater contamination due to salt-panning activity and seawater intrusion at Tuticorin coastal zone, southern Tamil Nadu, India
Chelladurai, Singaraja
Department of Geology, Presidency College, Chennai-5, India
C, Chidambaram
Department of Earth Sciences Annamalai University, Annamalai Nagar- 608002, India
P, Anandhan
Department of Earth Sciences Annamalai University, Annamalai Nagar- 608002, India
K, Tariq Abdul Kareem
Department of Applied Geology, University of Madras, Chennai-5, India
An attempt was made for the first time in the state of Tamil Nadu to assess the impact of saltpan and salt water intrusion effluent on available water sources existing in and around saltpans. A total of 48 water samples from different sampling sites were collected along coastal line and analyzed for physicochemical parameters such as Na+, Ca2+, Mg2+, K+, Cl-, SO2-4 and HCO-3 during Pre-monsoon. Results indicate both higher Cl- and SO2-4 concentration in water samples from salt pans than in water samples from other sources. In addition to ratio of Cl-/HCO-3 and Na+/Cl- were clearly indicated that relationships of salt pan contamination and seawater intrusion. It is also clearly evident that moles ratio of SO2-4/Cl- vs Cl- and ternary plot differentiated the salt pan and seawater contaminated in the study area. The result obtained conclusively suggests the detrimental impact of saline effluent on water quality in Tuticorin coastal area, rendering it unsuitable for the propagation of life and unfit for agricultural purpose. And this indicates a worse condition of salt pan vicinities, as the ground water is only source of drinking water in those places.
Keywords: Saltpan; Seawater Intrusion; Physicochemical.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3552
2015-01-03T02:54:23Z
IJAG:ART
"141217 2014 eng "
2311-7044
dc
Evaluation of hydraulic conductivity of lateritic soils using integrated approach: southwestern Nigeria case study
Fajobi, A.
Department of Civil Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria
Falade, F.
Department of Civil Engineering, University of Lagos, Lagos, Nigeria
Adepelumi, Adekunle
Obafemi Awolowo University
Akindulureni, Olaolu
Department of Geology, Obafemi Awolowo University, Ile-Ife, Nigeria
The source of groundwater seepage problem being experienced by some engineering buildings in a part of southwestern Nigeria was investigated by carrying out comparative study of the hydraulic conductivity (K) of the soil types underlying the area using integrated approaches involving geotechnical and geophysical methods.
Soil samples were collected from six different towns on which standard geotechnical tests including natural moisture content, grain size distribution, linear shrinkage, specific gravity, liquid and plastic limits, compaction, triaxial and K test were carried out. Also, geophysical data were acquired at seventy-two locations using Schlumberger array with a current electrode spacing of 40m. The resistivity data obtained were subsequently inverted to obtain the subsurface 2D hydraulic conductivity section.
The results obtained imply that the soil types investigated is semi-pervious with K values ranging from 1.06 x 10-5 to 5.71 x10-5cm/s. These values suggest moderate groundwater flow which might account for the seepage that was observed. Four lithologies (lateritic topsoil, clayey-sand, sandy-clay and fractured/weathered bedrock) were delineated. The geotechnical analysis result suggests the soil investigated could be classified as poorly graded sandy-clay and/or silty-clay. This soil exhibit plasticity index ranging from 12.72 to 19.75%, with specific gravity ranging from 2.47 to 2.73; the maximum dry density (MDD) varies from 1699.5 kg/cm3 to 1915kg/cm3 and the optimum moisture content (OMC) ranges from 12.05% to 16.32%.The result of the t-test results performed implied that at 95% t–confidence level, there is a good correlation between the results obtained from both approaches employed.
Science Publishing Corporation
2014-12-17 14:59:42
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International Journal of Advanced Geosciences; Vol. 3 No. 1 (2015)
eng
Copyright (c) 2014 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/3557
2014-11-13T03:05:20Z
IJAG:ART
"141002 2014 eng "
2311-7044
dc
Vorticity analysis within multiple deformable inclusions under pure shear
Dasgupta, Ritabrata
JADAVPUR UNIVERSITY
This work is aiming at analyzing the vorticity vector in 2D of deformable inclusions with the help of analytical techniques. The considerations made are first, inclusions are initially spherical, deformable; second, strain distribution within the inclusions are not homogeneous . The ratio of inclusion diameter (“a”) to mean inter-inclusion distance (“b”) that is (a/b) is less than about 0.6 .Considering ‘strain rate’ as natural strain the rate is infinitesimally small . Vorticity of particles inside the inclusions is also estimated while accounting different competency contrast conditions between matrix and inclusions. It is seen that competency contrast is inversely proportional to the vorticity value. Also after a threshold value the vorticity spin becomes opposite in directional sense. Probable reasons for this hiatus are discussed.
Keywords: Deformable Ductile Inclusions, Pure Shear, Vorticity, Viscosity / Competency Contrast.
Science Publishing Corporation
2014-03-09 13:32:14
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International Journal of Advanced Geosciences; Vol. 2 No. 2 (2014)
eng
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oai:ojs.pkp.sfu.ca:article/3963
2015-10-26T16:02:17Z
IJAG:ART
"150722 2015 eng "
2311-7044
dc
Characterization of the geological and geotechnical properties of soil using the surface wave approach
Oloye, Oluwatobi
Obafemi Awolowo University
Adepelumi, Adekunle
Obafemi Awolowo University
As part of the efforts to examine the elastic and engineering properties of the subsurface sequence at a proposed new power plant site in Edo State, a geophysical survey involving Multichannel Analysis of Surface Waves (MASW) was carried out. The MASW was adopted to determine the vertical and lateral variations in velocity beneath each seismic line. The MASW was carried out on two seismic lines each trending NE-SW. A geophone interval of 3 m was used, and the length of the seismic lines ranged from 60 – 90 m. The ES-3000 seismograph was used for the surface wave data acquisition and the Shear-Wave velocity structures of the area were obtained through the inversion of the acquired surface wave data. The one dimensional (1D) S-Wave velocity profiles along the lines were diagnostic of generally low velocity lithologies that suggest sand, clayey sand and sandy clay formations with relatively varying thicknesses. The subsurface layers delineated had shear-wave velocity values in the range of 63-400 m/s. They were classified using the NEHRP Seismic Site Classification, and all of them were in the range of stiff soil to soft clay soil. The bulk moduli (k) for these soils were in the range of 3.22-3.98 GPa. This depicts relatively low strength of the subsurface materials. The shear moduli (μ) values range from 7.15-7.43 MPa, which is indicative of low to moderate strength. The information provided in this study will aid the structural engineer or architect in foundation design of the proposed power plant. From the results of this study, it is concluded that although the subsurface layers are of relatively low strength, with the right intervention of the civil engineer, a suitable foundation can be designed for the gas plant.
Science Publishing Corporation
2015-07-22 04:36:53
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International Journal of Advanced Geosciences; Vol. 3 No. 2 (2015)
eng
Copyright (c) 2015 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/4865
2015-10-26T16:02:17Z
IJAG:ART
"150724 2015 eng "
2311-7044
dc
Damage zone propagation and support pressure estimation around two access tunnels of the Barapukuria coalmine in Bangladesh: a two-dimensional numerical modeling approach
Islam, Md. Rafiqul
Assistant Professor, Department of Petroleum and Mining Engineering, Shahjalal University of Science and Technology, Sylhet, Bangladesh
Omar Faruque, Mohammed
Assistant Professor, Department of Petroleum and Mining Engineering, Shahjalal University of Science and Technology, Sylhet, Bangladesh
Shinjo, Ryuichi
Professor, Department of Physics & Earth Sciences, University of the Ryukyus, Okinawa, 903-0213, Japan
The present study uses a two-dimensional boundary element method (BEM) numerical analysis to predict damage zone propagation associated with the required support pressure estimation around the two access tunnels of Barapukuria coalmine in northwest Bangladesh. Two tunnels at different depths are presented here. The stability of the two tunnels that was driven through the weak rocks' strata of Gondwana formation is examined at depths below the surface 290 m and 453 m. The two tunnels involve horseshoe-shaped design. The shallower tunnels, which are located below the surface 290 m, are presented by model A. The deeper tunnels, which are located below the surface 453 m, are presented by model B. Both tunnels are horseshoe-shaped with a height and span of about 4.5 m and 4 m, respectively. The modeling analysis was carried out in two stages to predict the damage zone and required support pressure. The first stage considered the model without support installation. The second stage measured the model with non-uniform internal support pressure installation. It is reasonable to mention that prior and subsequent to the support pressure estimation, three important parameters, like- strength factor, failure trajectories, and deformation boundaries in the vicinity of the two tunnels have been computed properly. Final results reveal that the strength factor values ranged from 0.33 to 0.99 would create the intense deformation at the roof and sidewalls. The damage zone would be extended from 0.64 to 0.74 m towards the roof and sidewalls. The damage zone would be ranged from 1.95 to 2.21 m, for shallower and deeper tunnels, respectively. For shallower tunnels, the required support pressure would be ranged from 4.0 to 9.0 MPa. For deeper tunnels, the essential support pressure would be ranged from 7.0 to 14 MPa.
Science Publishing Corporation
2015-07-22 04:36:53
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International Journal of Advanced Geosciences; Vol. 3 No. 2 (2015)
eng
Copyright (c) 2015 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/4867
2015-10-26T16:02:17Z
IJAG:ART
"150816 2015 eng "
2311-7044
dc
Numerical modeling of safety factor evaluation associated with the dredging and quarry mining techniques in northeast Bangladesh
Islam, Md. Rafiqul
Assistant Professor, Department of Petroleum and Mining Engineering, Shahjalal University of Science and Technology, Sylhet, Bangladesh
Omar Faruque, Mohammed
Assistant Professor, Department of Petroleum and Mining Engineering, Shahjalal University of Science and Technology, Sylhet, Bangladesh
Shahid, Abu Toyob
Hossain, Iqbal
Al Masum, Abdullah
This article describes the numerical modeling to investigate the safety factor of the quarry and dredging mining methods in the Volagonj area of Sylhet district in northeast Bangladesh. Two kinds of numerical models (A and B) are presented here. Both models consist of a single zone that includes gravelly sand deposits with some fine silt and clay. The zone also bears homogeneous rock/soil physical characteristics. Model A assumes safety factor of dredging mining method with variable slope angles and water column height of 40 m. Model B assumes safety factor of the quarry mining method associated with variable slope angles, where water column of the riverbed has not been considered. The numerical modeling results reveal that the safety factor of the model A ranges from 1.56 to 1.04. The safety factor ranges from 1.32 to 0.81 for model B. The calculated safety factor of the Volagonj rock quarry implies that the slope angle should not be greater than 70o for the dredging mining method. Because the critical safety factor values are 1.07 and 1.04 associated with slope angles 75o and 80o, respectively. For the case of the quarry mining, the appropriate slope angle also should not be greater than 60o.
Science Publishing Corporation
2015-07-22 04:36:53
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International Journal of Advanced Geosciences; Vol. 3 No. 2 (2015)
eng
Copyright (c) 2015 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/4949
2015-10-26T16:02:17Z
IJAG:ART
"151014 2015 eng "
2311-7044
dc
Assessment of ground water quality of lahar block, Bhind district in Madhya Pradesh
kant, Shashi
Banaras Hindu University
Singh, Y.V.
Banaras Hindu University
Jat, Lokesh Kumar
Banaras Hindu University
Meena, R.
Singh, S.N.
In sustainable groundwater study, it is necessary to assess the quality of groundwater in terms of irrigation purposes. The present study attempts to assess the groundwater quality through Irrigation Water Quality Index (IWQI) in hard-rock aquifer system and sustainable water use in Lahar block, Bhind of district, Madhya Pradesh, India. The quality of ground water in major part of the study area is generally good. In order to understand the shallow groundwater quality, the water samples were collected from 40 tube wells irrigation water. The primary physical and chemical parameters like potential Hydrogen (pH), Total Dissolved Solids (TDS), calcium (Ca2+), magnesium (Mg2+), sodium (Na+), potassium (K+), bicarbonate (HCO3-), carbonate (CO32-), chloride (Cl-), and nitrate (NO3-) were analyzed for (irrigation water quality index ) IWQI. The secondary parameters of irrigation groundwater quality indices such as Sodium Adsorption Ratio (SAR), Sodium Soluble Percentage (SSP), Residual Sodium Carbonate (RSC), Permeability Index (PI), and Kellies Ratio (KR) were also derived from the primary parameter for irrigation water quality index (IWQI). The IWQI was classified into excellent to unfit condition of groundwater quality based on their Water Quality Index (WQI). The IWQI (82.5%+15.0%) indicate that slightly unsustainable to good quality of ground water. Due to this quality deterioration of shallow aquifer, an immediate attestation requires for sustainable development.
Science Publishing Corporation
2015-07-22 04:36:53
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International Journal of Advanced Geosciences; Vol. 3 No. 2 (2015)
eng
Copyright (c) 2015 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/4988
2015-10-26T16:02:17Z
IJAG:ART
"150803 2015 eng "
2311-7044
dc
Optimum density determination for bouguer correction using statistical methods: a case study from north of Iran
Eshaghzadeh, Ata
Graduate student of geophysics, Institute of Geophysics, University of Tehran, Iran
Kalantari, Roghayeh sadat
Graduate student of geophysics, Institute of Geophysics, University of Tehran, Iran
Moeini Hekmat, Zohreh
Graduate student of geophysics, Islamic Azad University,Hamedan,Iran
The main aim of initial gravity data processing is to determine the density of under-research geological structures and stratification mat rials in this case. The density is important for the calculation of the Bouguer plate and terrain corrections. To achieve the corrected gravity data with high quality and accuracy, exact estimation of the density is very significant, but representative optimum density value for an area of interest is notoriously difficult to obtain. In this paper, several statistical methods based on the correlation are proposed, such as variation and fractal for surface optimum density determination. The efficiency of the methods has been employed for a case study in north of Iran.
Science Publishing Corporation
2015-07-22 04:36:53
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International Journal of Advanced Geosciences; Vol. 3 No. 2 (2015)
eng
Copyright (c) 2015 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/5355
2015-10-29T10:49:44Z
IJAG:ART
"151026 2015 eng "
2311-7044
dc
Hydrochemistry of springs in the bambui-sabga volcanic area (north west region, Cameroon volcanic line)
Pierre, Wotchoko
University of Bamenda
Margaret Awah, Tita
University of Bamenda
Gus Djibril, Kouankap Nono
University of Bamenda
Magha, Alice
University of Bamenda
Lawrence Mbitegemboh, Fosap
University of Bamenda
Christian Suh, Guedjeo
University of Dschang
Zenon, Itiga
Institute of Geological and Mining Research
Marie Louise Vohnyui, Chenyi
University of Dschang
Veronique, Kamgang Kabeyene
University of Yaounde I
This study was carried out in the Bambui-Sabga volcanic area in Tubah Sub-Division, North West Region, Cameroon. This research was aimed at carrying out a hydrochemical characterization of springs in the area. Chemical analysis were done using a DR 2010 Hach Spectrophotometer. The analysed spring samples were close to neutral (pH 6.9-7.6) with a high electrical conductivity ranging from 1,400 - 11,400 µS/cm and TDS from 750 - 7,960 mg/l. The FS01 spring recorded the highest average temperature of 34oC, yellowish-brown in colour and rusty odour, while the FS02 spring had a salty taste and soapy feel. The FS02 spring recorded the highest Na+ concentration of 128 mg/l. The analyzed springs can be classified into: thermal spring (FS01), salt spring (FS02) and normal (mineral) spring (FS03). The spring waters showed a (Na+K)-Cl (SO4) facies and are stable with Na-montmorillonite and zeolites, with their mineralisation from evaporation, salt water intrusion and leaching. Physical parameter were enriched in the dry season except for pH, and deficient in cations and anions except NO3- in FS02. In the rainy season, chemical enrichment was higher. The spring waters were not suitable for drinking and should be treated before human consumption.
Science Publishing Corporation
2015-07-22 04:36:53
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International Journal of Advanced Geosciences; Vol. 3 No. 2 (2015)
eng
Copyright (c) 2015 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/5594
2016-04-26T12:31:44Z
IJAG:ART
"160112 2016 eng "
2311-7044
dc
Application of vertical electrical sounding (VES) for groundwater exploration in Onitsha and environs, Nigeria
Osele, Chika
Nnamdi Azikiwe University, Awka
Onwuemesi, Ajana
Nnamdi Azikiwe University Awka
Anakwuba, Emmanuel
Nnamdi Azikiwe University Awka
Chinwuko, Augustine
Federal University Gusau
Surface geo-electrical survey using vertical electrical sounding (VES) method has been carried out in Onitsha and environs in southwestern part of Anambra state in order to determine the aquifer characteristics and groundwater potential of the area. Eleven vertical electrical soundings were carried out within the area of study using schlumberger array configuration. The interpretation of the vertical electrical sounding (VES) data revealed three to five geoelectric units with depth to the aquiferous layers ranging from 21 to 78m and resistivity of the saturated layers varying between 20 and 5600 ohm-m. Aquifer characteristics such as transmissivity and hydraulic conductivity calculated from interpretated VES result ranged from 2.55m2/day to 29.01m2/day and 0.03m/day to 1.37m/day respectively. This result shows that the water saturated sandstone units of the study area is hydrological good and capable of producing optimum groundwater yield. Furthermore, borehole could be drilled at depth between 40 and 110m in the area for sustainable water supply and hydrochemical study carried out to determine the water quality for domestics and municipal purposes.
Science Publishing Corporation
2016-01-12 11:27:31
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http://www.sciencepubco.com/index.php/IJAG/article/view/5594
International Journal of Advanced Geosciences; Vol. 4 No. 1 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/5991
2016-04-28T11:45:38Z
IJAG:ART
"160426 2016 eng "
2311-7044
dc
Evaluation of geotechnical properties of gully erosion materials in ORLU and its environs, IMO state, Nigeria
O.K, Iheme
NNAMDI AZIKIWE UNIVERSITY, AWKA, NIGERIA
V.U., Okoye
A.I., Chinwuko
A.O., Usman
C.F., Ejeke
C.E, Osele
The evaluation of geotechnical properties of rock materials is used to ascertain the environmental factor that necessitated gully erosion in Orlu and its environs, Imo State, Nigeria. The study is aimed at geotechnically defining the characteristics, causes and formation of the gully erosion with particular emphasis on the current land degradation in the study area. Data used in the study were derived from field measurements, and laboratory analysis. Gully variables such as length, depth and widths were also determined. The result of the geological mapping revealed that there are three geologic formations encountered in the study area namely; Ameki, Ogwashi Asaba, and Benin Formations. The result of the field studies shows that 27% of the gullies observed occur in Ameki Formation while no gully was discovered in Ogwashi Asaba formation. The grain size distribution curves interpretation revealed that 80% (by weight) of the soils are medium to coarse grained sand and fine gravels, while the remaining 18% and 2% are for fine grained sand and coarse grained silt. The Atterberg Limit Test interpretation shows that the plasticity index of the formations ranges from 24.83% to 48.42%. Based on the results of the geotechnical properties of rock materials in the study area, the factors responsible for gullies occurrence in the study area were identified as topography, rainfall, geology, and anthropogenic factors. The devastating effects of gully erosion in the study area were observed to include loss of about 22km2 of arable lands; 2 major and 6 minor road failures; loss of many houses and other infrastructures; pollution of surface and underground water. Finally, it is recommended that the appropriate authorities, individuals and all stakeholders in the environmental protection agency should develop ideas in environment watch towards gully erosion control.
Science Publishing Corporation
2016-01-12 11:27:31
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International Journal of Advanced Geosciences; Vol. 4 No. 1 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6158
2016-11-28T11:35:36Z
IJAG:ART
"160605 2016 eng "
2311-7044
dc
Assessment of groundwater quality by using statistical analysis from kopargaon taluka, Ahmednagar, India
A.V., Deshpande
Department of Applied Geology ,School of Environmental and Sciences,North Maharashtra University Jalgaon-425001
S.N., Patil
The study was conducted to evaluate the groundwater quality along the Kopargaon taluka. Thirty six ground water samples were collected from different sources in pre monsoon and post monsoon season, during the year 2013. The descriptive statistical analysis was carried out besides Pearson correlation. Correlation analysis revealed that very strong correlation exists between HCO3and Na(0.961), HCO3and Mg++ (0.935), HCO3and EC (0.927). Where highly negative correlation is observed between Na and pH (-0.537) during pre-monsoon season. During post monsoon season highly positive correlation is observed between Cl- and Ca++ (0.973), Ca and EC (0.967), Cl- and EC (0.966), SO4 and EC (0.948). Where, highly negative correlation is observed between Ca and pH (-0.533).
Science Publishing Corporation
2016-06-05 04:22:50
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International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6196
2016-11-28T11:35:36Z
IJAG:ART
"160616 2016 eng "
2311-7044
dc
Stress characterization and support measures estimation around a coalmine tunnel passing through jointed rock masses: constraints from BEM simulation
Islam, Md. Kamrul
Islam, Md. Rafiqul
Shahjalal University of Science and Technology
In the present research, the stress characterization around an unsupported coalmine tunnel passing through jointed rock masses was ana-lyzed and effective support system was calculated by BEM numerical simulations. The distribution and magnitudes of major and minor principal stress contours, mean stress, differential stress, total displacement, maximum shear strain, maximum shear stress contours around the tunnel are simulated by using the examine2D software. It is reasonable to mention that examine2D is a plane strain boundary element program for calculation of stresses and displacements around underground and surface excavation in rock. Modeling results reveal that the major principal stress (σ1) was about 13 MPa at the immediate roof of the tunnel that ultimately increased to 20 MPa toward the left side and right side. Mean stress contour value was 12 MPa at the immediate roof and 15 MPa toward the both rib sides. The distribution contour value of differential stress at the roof and rib sides were 16 MPa and 23 MPa, respectively. The contour values of the strength factor around the tunnel ranged from 0.51 to 1.02, which specify that the loosening zone would be extended up to 1.53 m towards the roof and 1.25 m at the sidewalls. The thickness (1.53 m) of loosening zone can be classified as soft or poor rock mass. In the immediate roof, floor and the both rib sides of the tunnel, the Spalling Criterion values ranged from 2.7 to 8.0 MPa, which indicate no potential for rock-burst around the tunnel. However, flexible support would be required to accommodate the dilatancy deformation during development period. Finally, the stiff support would be required to provide a strong supporting reaction and to maintain the long-term stability of the tunnel.
Science Publishing Corporation
2016-06-05 04:22:50
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International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6228
2016-11-28T11:35:36Z
IJAG:ART
"160730 2016 eng "
2311-7044
dc
GIS based approach to understand the factors influencing the water level of the coastal aquifers in the ramnad district, Tamilnadu, India
N, Sivakarun
Annamalai University
S, Chidambaram
Annamalai University
C, Thivya
University of Madras
P, Paramaguru
Annamalai University
K, Pradeep
Annamalai University
N, Ganesh
Annamalai University
P, Anandhan
Annamalai University
An attempt has been made in this study to understand the factors influencing the variation in water level of the groundwater of the Ramnad district. The different factors considered for study were average water level, Land use pattern, tanks and rainfall pattern of the study area. The water level contours were spatially plotted for four months interval and their average was considered for comparison. The rainfall trend of the district was obtained by the Thiessen polygon method. Further the Average water level contour was overlaid over the land use, tanks and rainfall distribution maps to understand the spatial influencing factor and it was identified that the agricultural return flow and the tank intensity play a major role in the recharge of the groundwater of this coastal aquifers.
Science Publishing Corporation
2016-06-05 04:22:50
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http://www.sciencepubco.com/index.php/IJAG/article/view/6228
International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6255
2016-11-28T11:35:36Z
IJAG:ART
"160709 2016 eng "
2311-7044
dc
Reservoir characterization and by-passed pay analysis of philus field in Niger delta, Nigeria
Ayobami, Sunmonu
Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
Adedapo, Adabanija
Department of Earth Sciences, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
Aanuoluwa, Adagunodo
Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
Ayokunnu, Adeniji
Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
Hydrocarbon resources have become the most essential commodity contributing to any nation’s growth and development in the recent years. For the past decades now, the quest for hydrocarbon resources has been increasing in an arithmetic rate that its supply can no longer meets the demand for its consumption today. In petroleum industry, seismic and well log analyses play a vital role in oil and gas exploration and formation evaluation. This study is aimed to effectively characterize the reservoirs and analyze the by-passed pay in Philus Field, Niger-Delta, Nigeria in order to look into the economic viability and profitability of the volume of oil in the identified reservoir(s). The faults in the study area trend in NW-SE direction and dip towards the south. Seven reservoirs were mapped on Philus field. A discovery trap and a by-passed (new prospect) trap were mapped out on the field. The petrophysical analysis showed that porosity of Philus field was 0.24. The volumetric analysis showed that the Stock Tank Original Oil in Place of discovery trap (Philus field) ranged from 1.6 to 43.1 Mbbl while that of new prospect trap ranged from 18.1 to 211.3 Mbbl. It is recommended that the oil reserve of Philus field needs to be recalculated.
Science Publishing Corporation
2016-06-05 04:22:50
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http://www.sciencepubco.com/index.php/IJAG/article/view/6255
International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6330
2016-11-28T11:35:36Z
IJAG:ART
"160725 2016 eng "
2311-7044
dc
Density distribution functions of faults and scaling relations
Caputo, Riccardo
Dept. Physics and Earth Sciences,Univ. Ferrara, Italy
Caputo, Michele
Texas A&M University, College Station, Texas
In the present note, we analyse various seismological datasets collected in different geological and tectonic settings as well as at different time and space scales, like seismic sequences, regional background seismicity, aftershock sequences, microseismic data, and swarms and induced seismicity. We investigate these datasets in terms of statistical distribution of single parameters focusing on stress drop (Δσ), scalar seismic moment (M0) and fault's dimension (often referred to as faults' radius, r0). In particular, we systematically obtain the density distribution functions (ddfs) of each parameter verifying the possible extension of the regression curves. We also analyse the correlations between the investigated parameters by comparing the slopes of the ddf for each dataset. Another goal of this investigation is to verify a possible similarity between comparable and different datasets (i.e. collected in similar or different geological and tectonic settings and range of magnitudes), to verify the stability of the ddf when using different methods as well as the variability of the stress drop even in the same seismological region. We suggest that even more accurate data covering wider ranges of values would be desirable in order to be of practical use like seismotectonic characterization, ground motion prediction and seismic hazard analyses, while the representation of the seismicity for any seismogenic region should be not limited to the b (or b0) value of the Gutenberg-Richter curve.
Science Publishing Corporation
2016-06-05 04:22:50
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International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6355
2016-11-28T11:35:36Z
IJAG:ART
"160820 2016 eng "
2311-7044
dc
Prediction of pore pressure using well logs and seismic data in Fabi Field, Onshore Niger delta, Nigeria
Emmanuel, Aniwetalu
Nnamdi Azikwe University, Awka
Emmanuel, Anakwuba
Juliet N, Ilechukwu
Okoye, Chidozie
The variations of pore pressure in Fabi Field Onshore Niger delta have been investigated using well log and seismic data. The both data were calibrated to ensure reasonable match in depth. Zones of overpressure were predicted from the well logs based on the deviations of petrophysical measurement from normal compaction trends. The lateral variations of the overpressure were delineated from seismic data through elastic impedance inversion. Overpressure cube was delineated from the inverted volumes through points of picked horizons. The results of the study revealed overpressure occurrence in well logs at depth level of 8625ft to 9000ft. The elastic impedance inversion presents overpressure variations beyond well control point at the depth level of about 1940-1140ms corresponding to very high impedance value of about 25540-27067ft/s*g/cc. The area extents of the positive anomalies (increase in elastic impedance) are mostly consistent with overpressure zones. Overpressure zones were also estimated from the seismic data between 1560ms -1600ms within the TRK-1 and TRK-2 horizon which also correspond to the well control points (8625ft to nearly 9000ft). The velocity and density crossplots revealed that undercompaction is the main overpressure generating mechanism in Fabi Field, although other parts of the field revealed unloading mechanism.
Science Publishing Corporation
2016-06-05 04:22:50
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International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6456
2016-11-28T11:35:36Z
IJAG:ART
"160822 2016 eng "
2311-7044
dc
Groundwater recharge influencing the arsenic enrichment in the aquifer of west Bengal
Singh, Neha
The Maharaja Sayajirao University of Baroda, Gujarat
Sen, Ratan
Jawaharlal Nehru University
Vishwakarma, Chandrashekhar Azad
Jawaharlal Nehru University
Asthana, Harshita
Jawaharlal Nehru University
Mukherjee, Saumitra
Jawaharlal Nehru University
Arsenic contamination, a very serious issue, has a detrimental effect on the living being. Arsenic contamination is found in the Gangetic plains, with West Bengal as the most affected state. In the present study, an attempt has been made to use weighted overlay analysis for arsenic hazard zonation based on the factors that influence the groundwater in a terrain. Weighted overlay analysis was done for mapping the arsenic contamination zone by assigning weightage and rating to geomorphology, land use/land cover, soil type, cropping intensity, slope and drainage density in North 24 Parganas. The whole region has been formed by the sedimentation from the river, and soil at the surface contains higher concentration of arsenic. Arsenic may get released from the sediment by various mechanism and transport downward along with the infiltration of rainwater. Thus, arsenic contamination in groundwater is influenced by the arsenic rich sediments, slope, and drainage pattern of the area. The arsenic concentration in collected groundwater samples shows the same result as obtained from the weighted overlay analysis except in the area with deeper water level. Thus, weighted overlay analysis along with water level data can be an effective method for determining the risk of arsenic in an area.
Science Publishing Corporation
2016-06-05 04:22:50
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International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6511
2016-11-28T11:35:36Z
IJAG:ART
"160820 2016 eng "
2311-7044
dc
Production rate and cost comparison of ceramic block solar desalination unit (CBSDU) with basin type solar still (BSS)
Islam, Md Hamidul
Lecturer, Department of Building Engineering & Construction Management, KUET, Khulna-9203, Bangladesh
Bari, Quazi Hamidul
Professor, Department of Civil Engineering, KUET, Khulna-9203, Bangladesh
Islam, Md Shafiqul
MS Student of Disaster Management, Dept. of Geography and Environment, University of Dhaka, Bangladesh
Distilled water for drinking purposes is vital especially in semi or arid countries where surface water is limited and groundwater is saline. The ceramic block solar desalination unit (CBSDU) is significant for single household in developing countries like Bangladesh. The aims of this study are to monitor daily production and cost compared with basin type solar still (BSS). The materials and installation cost of the ceramic block solar unit was estimated Tk.40 per solar desalination unit. The field experiment was carried out on the roof top of the civil engineering building, KUET from 24th February to 11th June, 2012. The CBSDU was installed perpendicular to the surface, from 2 feet above the surface, on a concrete base. The collection bottle was put under the concrete base. The distilled water was collected every day at least two hours after sunset. The average production was found 4.26 lit/m2/day. The CBSDU offers 12% less cost than BSS. Single household can easily use CBSDU for their drinking water in coastal belt of Bangladesh.
Science Publishing Corporation
2016-06-05 04:22:50
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International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6516
2016-11-28T11:35:36Z
IJAG:ART
"160820 2016 eng "
2311-7044
dc
New K–AR ages of tchabal mbabo alkaline volcano massif, Cameroon volcanic line and adamawa plateau (central Africa)
Aminatou, Fagny Mefire
Ngaoundéré University
Oumarou Faarouk, Nkouandou
Ngaoundéré University
Robert, Temdjim
University of Yaoundé 1
Jacques-Marie, Bardintzeff
University of Paris-Sud
Herve, Guillou
Laboratoire des Sciences du Climat et de l’Environnement
Dan, Stumbea
University "Alexandru Ioan Cuza" Iași
Abdelhak, Boutaleb
Faculté des Sciences de la Terre, de Géographie et de l’Aménagement du Territoire
Tchabal Mbabo in Central Africa is a voluminous volcano massif composed of alkali lava series. K-Ar geochronology data obtained from three samples of basanite - trachyandesite composition defined at least two volcanic activities. The first at end Eocene (38.22 ± 0.80 Ma) and the second during Oligocene (28.88 ± 0.61 and 28.60 ± 0.60Ma). The distribution of different ages along the Cameroon Volcanic Line is difficult to council with any migration of magmatic activity, as previously suggested. The most realistic scenario for the formation of Cameroon Line is that the ascent of lavas has been favored by the crustal discontinuities inherited from the Pan-African orogeny and reactivated during Mesozoic and Cenozoic. ICP MS and ICP AES analyses show that basanite lavas are the result of 2 % melting of sub-lithospheric mantle source containing garnet and phlogopite phases; the trachyandesites are formed by fractional crystallization of K-feldspar, amphibole, clinopyroxene and Fe-Ti oxides.
Science Publishing Corporation
2016-06-05 04:22:50
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International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6743
2016-11-28T11:35:36Z
IJAG:ART
"161018 2016 eng "
2311-7044
dc
Soil chemical analysis of gangetic delta plain by combined use of multispectral imagery and XRF spectroscopy
Singh, Neha
The Maharaja Sayajirao University of Baroda, Gujarat
Asthana, Harshita
Jawaharlal Nehru University
Vishwakarma, Chandrasekhar Azad
Jawaharlal Nehru University
Sen, Ratan
Jawaharlal Nehru University
Mukherjee, Saumitra
Jawaharlal Nehru University
24 Parganas districts of West Bengal are very well known for their agricultural productivity. These districts are the part of the mature delta plain of the Bengal delta which is formed by the deposition of weathered sediments through Himalayan Rivers. The agricultural productivity of an area depends mainly upon the fertility of soil which in turn depends on the presence of essential nutrients in it. Thus, the present study was carried out to assess the types of minerals present in the soil which provide the elements that act as the nutrients to the plant. Band ratio technique using the Landsat imagery and X-Ray Diffraction was carried out for the study of mineral composition. XRF was done for the elemental composition of the soil samples and Principal Component Analysis was carried out to assess the sources of these nutrients in the soil. Normalized Difference Vegetation Index was also calculated using Landsat imagery to study the vegetation pattern in the area. The study suggests that the area is mainly comprised of clay and ferrous minerals and contains nearly all the elements that act as macro-and micro-nutrients. However, the study also shows the accumulation of some of the heavy metals which may be due to the excessive use of fertilizers.
Science Publishing Corporation
2016-06-05 04:22:50
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International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/6771
2016-11-29T02:53:28Z
IJAG:ART
"161128 2016 eng "
2311-7044
dc
Geochemical investigation of stream sediments from the nlonako area; littoral, Cameroon: implications for Au, Ag, Cu, Pb and Zn mineralization potentials
Gus Djibril, Kouankap nono
a) Higher teachersꞌ Training College, University of Bamenda, Cameroon
Aloysius, Afahnwie Ngambu
b) Economic Geology Unit, University of Buea, Cameroon
Patrice Arnaud, Kouske
University of Douala
Pierre, Wotchoko
The University of Bamenda
Jonas Didero, Takodjou Wambo
d) Laboratory of Petrology and Structural Geology, University of Yaoundé 1, Cameroon
Christopher, Agyingi Mbaringong
b) Economic Geology Unit, University of Buea, Cameroon
Rene, Amie Anzah
a) Higher teachersꞌ Training College, University of Bamenda, Cameroon
Emmanuel, Cheo Suh
b) Economic Geology Unit, University of Buea, Cameroon
Nlonako area belongs to Cameroon Volcanic Line. To determine the mineralization potentials of the area, stream sediment survey and geochemistry were carried out. The results show weak anomalies in Gold and Silver with threshold values of 0.001 and 0.073 respectively. Copper, Lead and Zinc have some relatively high values which are 690ppm, 182ppm and 378ppm with mean values statistically calculated to be 73.90, 46.51 and 198.58 respectively. The data analyzed using multivariate statistical methods yielded 5 factors from Principal Component Analysis (PCA). These five factors are; Factor 1 (Ce, La, Nb, Y), Factor 2 (W, Mo, Sr, As, Cd, Ni), Factor 3 (Pb, Sn, Zn, Sb), Factor 4 (Au, Ag, Cu) and Factor 5 (Cr, Co, Bi). These factors point mostly to a possible sulphide mineralization. Gold shows high correlation with Ag and Cu while Y correlates more highly and positively with Ce and La. There is a relatively high input of the light rare-earth elements which form the highest factor (34.363%) of the total PCA variance and possibly points to a granitic source rock. The existence of mafic–ultramafic igneous rocks in the study area underlies high correlations between Cr and Co and other factors gotten from PCA.
Science Publishing Corporation
2016-06-05 04:22:50
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International Journal of Advanced Geosciences; Vol. 4 No. 2 (2016)
eng
Copyright (c) 2016 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7026
2017-11-29T13:02:28Z
IJAG:ART
"170831 2017 eng "
2311-7044
dc
Delineating surface and sub surface waterlogged area using RS & GIS: a case study of Rachna Doab
Mehmood, Hannan
MS Scholar, PMAS Arid Agriculture University, Rawalpindi, Pakistan
khan, Mobushir Riaz
Associate Professor, PMAS Arid Agriculture University, Rawalpindi, Pakistan
Amin, Muhammad
Lecturer, PMAS Arid Agriculture University, Rawalpindi, Pakistan
Ali, Rizwan
MS Scholar, PMAS Arid Agriculture University, Rawalpindi, Pakistan
Remote sensing (RS) combined with Geographical Information Systems (GIS) offers fabulous contrasting option to routine mapping strategies in observing and mapping of surface and sub-surface waterlogged areas. In the present study, a pre-monsoon and post-monsoon surface waterlogged area was delineated in the four districts of Rachna doab, using Landsat 8 data acquired for the year 2014. Modified Normalized Difference Water Index (MNDWI) was used mainly to delineate surface waterlogged areas. Perennial surface waterlogged areas were assessed for the study area by incorporating the waterlogged areas derived for both the pre-monsoon and post-monsoon seasons under GIS environment. Result shows that the total surface waterlogged area in pre-monsoon is 5,861 ha, which is 0.51 % of study area and for post-monsoon the surface waterlogging is 8,661 ha, which is 0.75% of study area respectively. Perennial surface waterlogging is 3,573 ha, which is 0.30% of the study area. Maximum waterlogged area was observed in Gujranwala district followed by Hafizabad, Sheikhupura and Nankana Sahib respectively. Further, waterlogged areas caused by rise in groundwater level were also assessed spatially under ArcGIS environment using the piezometric data pertaining of pre-monsoon and post-monsoon seasons for the year 2014 which were spread all over the study area. The analysis of both the seasons of groundwater levels indicates that the area under critical category during pre-monsoon period was 47,309 ha, which is 4% of the total area. Area under most critical category during post-monsoon period increased from 47,309 to 131,070 ha, which is 11% of the total. The study shows utility of remote sensing and GIS for evaluation of waterlogging areas especially where waterlogging situations occurs because of excessive irrigation and accumulation of rain and floodwater.
Science Publishing Corporation
2017-06-27 19:51:45
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International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7116
2017-05-16T05:09:15Z
IJAG:ART
"170127 2017 eng "
2311-7044
dc
Irrigation groundwater quality based on hydrochemical analysis of Nandgaon block, Nashik district in Maharashtra
Aher, Kailash
Groundwater Survey and Development Agency, GSDA, Central Administrative Building,Collectoral office, 2nd floor, Fazalpura, Aurangabad-431001 (M.S.) India
Gaikwad, Sharad
GSDA< Jalna
To identify the sources and quality of groundwater, the water samples were collected from 52 dug wells irrigation water in an area of 1089.82km2 and were analyses for pH, Conductivity, total dissolved solids, Calcium, Magnesium, Sodium, potassium, total hardness, Alkalinity (CO32−, HCO3−), sulphate, chloride, nitrate and fluoride to understand the (irrigation water quality index ) IWQI, The         secondary parameters of irrigation groundwater quality indices such as Sodium adsorption ratio (SAR), Residual sodium carbonate (RSC), Kelley’s ratio (KR), Sodium soluble percent (SSP), Permeability index (PI),Magnesium adsorption ratio (MAR),and CRI      (Corrosively ratio index) were calculated from the primary parameter for irrigation water quality index (IWQI). The IWQI was classified into excellent to unfit condition of groundwater quality based on their Water Quality Index (WQI). The IWQI (88%+12%) indicate that slightly unsustainable to good quality of ground water. But due to this quality deterioration of shallow aquifer, an immediate attestation requires for sustainable development.
Science Publishing Corporation
2017-01-27 05:54:03
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http://www.sciencepubco.com/index.php/IJAG/article/view/7116
International Journal of Advanced Geosciences; Vol. 5 No. 1 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7132
2017-05-16T05:09:15Z
IJAG:ART
"170211 2017 eng "
2311-7044
dc
Spatial Assessment of Groundwater Quality with Special Reference to Nitrate Pollution in Raipur City, Chhattisgarh State, India using Geographical Information System
Khan, Rubia
National Institute of Technology Raipur
Jhariya, D.C.
National Institute of Technology Raipur
Groundwater quality is one of the most important aspects for sustainable development of social and economic life. In present study, 41 groundwater samples were collected systematically during the pre-monsoon (May 2015) and post-monsoon (December 2015) periods. Nine parameters, i.e. EC, Ca, Mg, Na, K, NO3, SO4, HCO3 and Cl were analyzed in the laboratory adapting a standard protocol of APHA, 1995. The analyzed samples were compared with BIS and WHO standard for drinking purpose and spatial distribution map was prepared using Arc GIS Software. In present study, it is found that Ca, Mg, K and NO3 are above permissible limit and SO4 is above an acceptable limits according to BIS standard. Present study reflecting that main causes of groundwater pollution in study area are anthropogenic activities.
Science Publishing Corporation
2017-01-27 05:54:03
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International Journal of Advanced Geosciences; Vol. 5 No. 1 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7190
2017-05-16T05:09:15Z
IJAG:ART
"170214 2017 eng "
2311-7044
dc
Determination of orthometric elevations using gnss-derived height with the egm2008 geoid height model
Menegbo, Emmanuel
Port Harcourt Polytechnic, Nigeria
The Global navigation satellite systems (GNSS) has imparted positively on civilian positioning & surveying in the horizontal component in Nigeria for the past two decades. The GNSS receivers’ data are longitude, latitude & elevation. However, the vertical distance measurement have not been fully exploited by geodetic and land surveyors. The GNSS derived heights are ellipsoidal elevation. To convert the GNSS elevation to orthometric heights, a geoidal elevation models is needed. The Earth Gravitational Model, 2008 (EGM2008) is a global geoidal models that can be used to obtain GNSS orthometric heights by defining the relationship with the ellipsoid. This work determines GNSS-derived orthometric heights with ellipsoid-geoidal relationship using GPS ellipsoidal heights and EGM2008 geoidal model GIS data. The EGM2008 GIS data was downloaded and interpolated with GPS data to obtain geoidal heights using ArcGIS 10.1. GNSS-derived heights determined with geoid-ellipsoid relationship formula. The result shows minimum elevation of -2.37599m and maximum elevation of 53.8566m.The derived orthometric heights use to create a model in raster format. The orthometric elevation models created useful in all vertical surveying work, construction work and urban planning. The GNSS orthometric heights models need to be compare with spirit levelling and the local geoidal model determined for improve accuracy.
Science Publishing Corporation
2017-01-27 05:54:03
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http://www.sciencepubco.com/index.php/IJAG/article/view/7190
International Journal of Advanced Geosciences; Vol. 5 No. 1 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7447
2017-05-16T05:09:15Z
IJAG:ART
"170411 2017 eng "
2311-7044
dc
Evaluation of Ground Water Potential in Ekpri-Ikang, Bakassi Local Government Area, Cross River State, Nigeria. “A Case Study of Open Bible Standard Church Premisesâ€
Umoren, Emmanuel
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Agbasi, Okechukwu
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Emmanuel, Eniang
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Electrical resistivity survey using Schlumberger Vertical Electrical Sounding (VES) field technique was carried out at Ekpri Ikang in Bakassi local government area of Cross River State. The survey is aimed at determining the water bearing formation of the area. Data acquired were interpreted using WinRes Program into a curve showing true resistivity and thickness of the subsurface layers. Result indicates that there are four distinct layers in the study area. Analyses of the data and interpretation of the sounding curve reveals that the water bearing layer exist in the layer two (2) and three (3) with resistivity values of 347.6Ω and 375.5Ω, also with thickness of 14.5m and 21.3m, depth of 39.6m and 61.0m. It is therefore recommended that boreholes for good drinking water be drilled to the layer two (2) and three (3) of the investigated area.
Science Publishing Corporation
2017-01-27 05:54:03
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International Journal of Advanced Geosciences; Vol. 5 No. 1 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7456
2017-05-16T05:09:15Z
IJAG:ART
"170411 2017 eng "
2311-7044
dc
Evaluation of Reservoir’s Petrophysical Parameters, Niger Delta, Nigeria
Essien, Ubong
Department of Science Technology, Akwa Ibom State Polytechnic, Ikot Osurua, Akwa Ibom State
Akankpo, Akaninyene
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Agbasi, Okechukwu
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Petrophysical analysis was performed in two wells in the Niger Delta Region, Nigeria. This study is aimed at making available petrophysical data, basically water saturation calculation using cementation values of 2.0 for the reservoir formations of two wells in the Niger delta basin. A suite of geophysical open hole logs namely Gamma ray; Resistivity, Sonic, Caliper and Density were used to determine petrophysical parameters. The parameters determined are; volume of shale, porosity, water saturation, irreducible water saturation and bulk volume of water. The thickness of the reservoir varies between 127ft and 1620ft. Average porosity values vary between 0.061 and 0.600; generally decreasing with depth. The mean average computed values for the Petrophysical parameters for the reservoirs are: Bulk Volume of Water, 0.070 to 0.175; Apparent Water Resistivity, 0.239 to 7.969; Water Saturation, 0.229 to 0.749; Irreducible Water Saturation, 0.229 to 0.882 and Volume of Shale, 0.045 to 0.355. The findings will also enhance the proper characterization of the reservoir sands.
Science Publishing Corporation
2017-01-27 05:54:03
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International Journal of Advanced Geosciences; Vol. 5 No. 1 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7550
2017-11-29T13:02:28Z
IJAG:ART
"170916 2017 eng "
2311-7044
dc
Geographical analysis of health facilities in port Har-court city local government area, rivers state, Nigeria a case study of rivers state, Nigeria
Menegbo, Emmanuel
Port Harcourt Polytechnic, Nigeria
One of the Millennium Development Goals (MDGs) which 2015 was the target date for its achievement now sustainable goal is stopping the spread of diseases that are preventable. GIS measures coverage, access and pattern's utilization of healthcare services and is important in the research, management, and planning of Healthcare facilities and system. This work, therefore, investigates the spatial distributions of healthcare facilities in Port Harcourt city LGA in Rivers State, Nigeria. Primary data was acquired using GPS handheld receiver and Secondary data such as the attribute (population data, names of hospitals) and spatial data (administrative map, road, and settlement) obtained from government official records. Data obtain shown on a map the spatial distributions of health facilities and access road to the facilities. The result also depicts a spatial distribution's pattern of healthcare facilities and thus insight gain in access to healthcare facilities and services in the LGA.
Science Publishing Corporation
2017-06-27 19:51:45
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http://www.sciencepubco.com/index.php/IJAG/article/view/7550
International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7572
2017-05-16T05:09:15Z
IJAG:ART
"170511 2017 eng "
2311-7044
dc
Numerical modeling of the tide in the coast ar-ea Casablanca-Mohammedia (Morocco)
Mouakkir, Laila
Faculté des sciences Ben M'sik
Mordane, Soumia
The objective of this study is to simulate the tidal circulation in the coastal area Casablanca-Mohammedia located on the Moroccan Atlantic. Simulations of the tidal currents of this zone use the 2D version of the MECCA (Model for Estuarine and Coastal Circulation Assessment). These simulations are based on the depth-integrated dynamical equations of turbulent motion. Equations are solved by using the implicit finite-differences techniques. The modelincorporates the actual bottom topography and the effects of the Earth rotation. As forcing mechanism, the model uses the tidal heights prescribed along the open boundaries.
As first results, numerical experiments show that the model provides good results compared to those of the altymetric model TPXO.
Science Publishing Corporation
2017-01-27 05:54:03
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International Journal of Advanced Geosciences; Vol. 5 No. 1 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7586
2017-05-17T06:03:28Z
IJAG:ART
"170516 2017 eng "
2311-7044
dc
Shale volume and permeability of the Miocene unconsolidated turbidite sands of Bonga oil field, Niger delta, Nigeria
Namdie, Inyang
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Akpabio, Idara
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Okechukwu .E., Agbasi
Bonga oil field is located 120km (75mi) southeast of the Niger Delta, Nigeria. It is a subsea type development located about 3500ft water depth and has produced over 330 mmstb of hydrocarbon till date with over 16 oil producing and water injection wells. The producing formation is the Middle to Late Miocene unconsolidated turbidite sandstones with lateral and vertical homogeneities in reservoir properties. This work, analysis the petrophysical properties of the reservoir units for the purpose of modeling the effect of shale content on permeability in the reservoir. Turbidite sandstones are identified by gamma-ray log signatures as intervals with 26-50 API, while sonic, neutron, resistivity, caliper and other log data are applied to estimate volume of shale ranging between 0.972 v/v for shale intervals and 0.0549 v/v for turbidite sands, water saturation of 0.34 v/v average in most sand intervals, porosity range from 0.010 for shale intervals to 0.49 v/v for clean sands and permeability values for the send interval 11.46 to2634mD, for intervals between 7100 to 9100 ft., Data were analyzed using the Interactive Petrophysical software that splits the whole curve into sand and shale zones and estimates among other petrophysical parameters the shale contents of the prospective zones. While Seismic data revealed reservoir thickness ranging from 25ft to over 140ft well log data within the five wells have identified sands of similar thickness and estimated average permeability of700mD. Within the sand units across the five wells, cross plots of estimated porosity, volume of shale and permeability values reveal strong dependence of permeability on shale volume and a general decrease in permeability in intervals with shale volume. It is concluded that sand units with high shale contents that are from0.500 to0.900v/v will not provide good quality reservoir in the field.
Science Publishing Corporation
2017-01-27 05:54:03
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International Journal of Advanced Geosciences; Vol. 5 No. 1 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7720
2017-11-29T13:02:28Z
IJAG:ART
"170629 2017 eng "
2311-7044
dc
Depositional facies model and reservoir characterization of USANI field 1, Niger delta basin, Nigeria
Aigbadon, Godwin
Wesley University of Science and Technology, Ondo State, Nigeria
Okoro, A.U
Una, Chuku
Wesley University of Science and Technology, Ondo State, Nigeria
Azuka, Ocheli
Nnamdi Azikiwe Univesity, Awka
The 3-D depositional environment was built using seismic data. The depositional facies was used to locate channels with highly theif zones and distribution of various sedimentary facies. The integration core data and the gamma ray log trend from the wells within the studied interval with right boxcar/right bow-shape indicate muddy tidal flat to mixed tidal flat environments. The bell–shaped from the well logs with the core data indicate delta front with mouth bar, the blocky box- car trend from the well logs with the core data indicate tidal point bar with tidal channel fill. The integration of seismic to well log tie display a good tie in the wells across the field. The attribute map from velocity analysis revealed the presence of hydrocarbons in the identified sands (A, B, C, D1, D2, D4, D5). The major faults F1, F2, F3 and F4 with good sealing capacity are responsible for hydrocarbon accumulation in the field. Detailed petro physical analysis of well log data showed that the studied interval are characterized by sand-shale inter-beds. Eight reservoirs were mapped at depth intervals of 2886m to 3533m with their thicknesses ranging from 12m to 407m. Also the Analysis of the petrophysical results showed that porosity of the reservoirs range from 14% to 28 %; permeability range from 245.70 md to 454.7md; water saturation values from 21.65% to 54.50% and hydrocarbon saturation values from 45.50% to 78.50 %. The by-passed hydrocarbons were identified and estimated in low resistivity pay sands D1, D2 at depth of 2884m – 2940m, sand D5 at depth of 3114m – 3126m respectively. The model serve as a basis for establishing facies model in the field.
Science Publishing Corporation
2017-06-27 19:51:45
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International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7890
2017-11-29T13:02:28Z
IJAG:ART
"170627 2017 eng "
2311-7044
dc
Peat stratigraphy mapping using ground penetration radar and geotechnical engineering implications
Akpabio, Godfrey
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Johnson, Ubong
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Cana, Calrlos Vargas
Agbasi, Okechukwu
University of Uyo, Uyo, Akwa Ibom State, Nigeria
A Combined Land and Marine Ground Penetrating Radar (GPR) surveys was carried out in Southwestern part of Lagos, Badia, Nigeria with a view of delineating the subsurface peat stratigraphy that would aid geotechnical engineering design of the appropriate soil stability processes. The GPR study was conducted along eight parallel traverses trending East-West, using the Geophysical survey system incorporated (GSSI) SIR-3000 200MHZ Monostatic shielded antenna. Geographically, the study area is approximately between latitude 715000N and 716000N and longitude 538600E and 540300E of the universal traverse Mercator. The antenna was present with three gain points in order to improve the scans during data acquisition while 33 scans per meter were taken (representing 3cm station spacing) with a sampling window of 400ns with offset of +25ns.The topography is generally flat with localized undulations due to sand heaps from canals dredging and sand filling activities in the area. The peat depth was found to vary from 1.5m to 6m and the thicknesses from traverse one (1) to eight (8) on chainage 625m to 1100m. The area belongs to Dahomey Basin which is also known as Dahomey Embayment or Benin Benin or as West Nigeria Basin. The mineralogy, micro-fabrics and Morphology of the delineated stratigraphy was determined using the Scanning Electron Microscope (SEM) and X-Ray diffraction (XRD) methods. The results obtained revealed the presence of five subsurface (Topsoil/ sand filled Layer, Silty Clay, Peat, sandy Clay and Silty Sand) geological Layers, distinct geomorphological features, and high, moderate and low amplitudes, to continuous and discontinuous planer relax Facies structures. SEM and XRD analyses of the field samples obtained showed the dominance of Kaolinite, illite and quarts minerals in the clay/peat mapped. The derived engineering parameters suggest that the peat found in the study area are “fibrous peat†with low strength and medium to low bedding stress. It is observed that the peat generally depict high compressibility value, low internal frictional angle, they exhibit low elastic properties such as low shear modulus, low bulk modulus and young modulus values. The findings confirm the efficacy and relevance of GPR technique for pre-construction engineering investigation.
Science Publishing Corporation
2017-06-27 19:51:45
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International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/7924
2017-11-29T13:02:28Z
IJAG:ART
"170716 2017 eng "
2311-7044
dc
Assessing the drinking water quality and performance of pond sand filters (PSF) in coastal area of Bangladesh: a cross sectional study on dacop upazila of Khulna
Alam, F M Ashraful
Assistant Consultant
Islam, Md Shafiqul
Environmental Officer
Ghosh, Gopal Chandra
Associate Professor
Yeasmin, Tania
M.Sc. Student of Disaster Management
The study focused on existing condition of drinking water and evaluates the performance of pond sand filters (PSFs) as a safe drinking water source of three selected Union of Dacope Upazila, Khulna in south-west coastal part of Bangladesh. This study exposed that the un-treated pond water is the main drinking water sources (54 %) in the study area. Other options for drinking water are PSF (43 %) and rain-water harvesting (RWH) systems (3%). The people who are using pond water directly as drinking water are suffered (67%) from various water-borne diseases in different times of the year. Most of the PSF users satisfied with the existing system of PSF. In most cases 85% the beneficiary’s willingness to pay for maintaining of PSFs. The water qualities were tested for the raw and treated water at various steps of the treatment process. The laboratory analysis showed that turbidity, pH, nitrate (NO3), ammonia (NH3), total dissolved solid (TDS), elec-trical conductivity (EC) and phosphate (PO4) of the PSFs water meet the Bangladesh standard, but the microbial contaminations are failed to meet the Bangladesh standard. In the raw water from three PSFs, the fecal coliform ranges are 64,122 and 136 CFU/100ml. After the treatment the fecal coliform ranges were 9, 19 and 38 CFU/100ml respectively. The outcome of the study provided information to ensure safe and adequate quantity of drinking water system in a disaster-prone coastal area of Bangladesh. It seems that if the PSF installs more in this region and takes action in regular monitoring and proper management, therefore, it will be one of the most sustainable drinking water sources for this coastal region.
Science Publishing Corporation
2017-06-27 19:51:45
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http://www.sciencepubco.com/index.php/IJAG/article/view/7924
International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8061
2017-11-29T13:02:28Z
IJAG:ART
"170821 2017 eng "
2311-7044
dc
Geothermal modelling and its application to hydrocarbon generation from agbada formation. a case study of USANi field, Niger delta basin, Nigeria
Aigbadon, Godwin
Wesley University of Science and Technology, Ondo State, Nigeria
Okoro, Anthony
Nnamdi Azikiwe University
Akpunonu, Elesius
Nnamdi Azikiwe University
Nimnu, Rosemary
Nnamdi Azikiwe University
Ocheli, Azuka
Nnamdi Azikiwe University
The geothermal model was done with the integration of surface. Subsurface temperature's data and formation depth values from suites of well log in the study field. The well comprises Gamma-ray log (GR log), Spontaneous Potential logs (SP log), Resistivity logs, Formationdensity, Neutron log and Sonic log. The suites of welllog within the studied sequences penetrates Agbada and the Benin Formation. The Benin Formation comprises mainly of continental sands, and the Agbada Formation consist of alternating sequence of sand and shales within the study wells. The estimated thickness and temperature values within the study field falls within the range from 1357- 3500m and 101 O C – 120.5 O C with estimated geothermal gradient range of (0.028 - 0.03 O C/100m) in the field. The geo-temperatures results range of 101.60 O C – 119.60 OCat modeled depth of 1357m- 3500m, indicating that the shale sequence at the basal path of the Agbada Formation is thermally matured with sufficient organic matter to generate hydrocarbon in the study field as earlier believe to be immature and cannot generate hydrocarbon. The geothermal model can be applicable to any sedimentary basin in the world. This work is also an important tool in source rock evaluation to compliment petroleum geochemistry and position the hydrocarbon generating window of the study field.
Science Publishing Corporation
2017-06-27 19:51:45
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International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8125
2017-11-29T13:02:28Z
IJAG:ART
"170926 2017 eng "
2311-7044
dc
Petro physical properties analysis of beani bazar gas field, Bangladesh using wireline log interpretation
Islam, G. M. Ariful
''Jessore University of Science and Technology''
Nipa, Farzana Yeasmin
Shah, Md. Shaheen
The study on analysis of petro physical properties which are done into two well such as BB-1 and BB-2 of Beani Bazar Gas Field using wire line log data. In BB-1, Upper Gas Sand (UGS), Lower Gas Sand (LGS), Sand-1 and Bellow Lower Gas Sand (BLGS) zones and in BB-2, UGS and LGS are identified through high gamma ray log, high resistivity, low neutron and low density log response. The thickness of UGS, LGS, Sand-1, BLGS of BB-1 and UGS, LGS of BB-2 are respectively 47.69m, 14.326m, 17.526m, 17.526m and 26.37m, 21.03m. The Shale volumes of UGS, LGS, Sand-1 and BLGS of BB-1 are respectively 14.87%, 21.58%, 11.69% and 21.28% and UGS and LGS of BB-2 are respectively 17.91% and 29.33%, which are measured through Schlumberger Clavier method. The average porosity of UGS, LGS, Sand-1 and BLGS of BB-1 are respectively 17.55%, 16.60%, 18.07% and 31.10% and UGS and LGS of BB-2 are respectively 13.19% and 11.29%, which are very effective for hydrocarbon prospect by using neutron-density combination method. The average water saturations of UGS, LGS, Sand-1 and BLGS of BB-1 are respectively 24.97%, 23.78%, 80.18% and 19.85% which revised to hydrocarbon saturations as respectively 75.03%, 76.22%, 19.82% and 80.15% and UGS and LGS of BB-2 are respectively 41.20% and 69.50% which revised to hydrocarbon saturations as respectively 58.80% and 30.50% that are followed by Simandoux method. By analysis of petro physical properties of those zones, the UGS and LGS are very effective hydrocarbon bearing zones where production is running at the present time, the Sand-1 zone is water bearing zone. This study impose high important on BLGS. This zone is satisfied all criteria for hydrocarbon prospect. This study recommends that more study is needed for BLGS, and it may be commercially economical viable in a future.
Science Publishing Corporation
2017-06-27 19:51:45
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International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8236
2021-02-19T14:17:44Z
IJAG:ART
"171221 2017 eng "
2311-7044
dc
Source Rock Evaluation of Paleocene Akinbo shale, Eastern Dahomey Basin
Victoria, Dairo
Crawford University, Igbesa, Nigeria
Onenu, Asue
Crawford University, Igbesa
Selected subsurface core samples of the shale of Akinbo Formation as penetrated by an exploratory well in Ibese, Eastern Dahomey basin were investigated to ascertain the quality and quantity of organic matter, the hydrocarbon potential and kerogen type.
The samples were subjected to Total Organic Carbon (TOC) and Rock Eval analyses and various cross plots were generated from the data obtained.
The TOC and Free oil content (S1) of all the shale samples range from 0.96wt% to 2.82wt% and 0.07mgHC/g to 0.17mgHC/g with mean values of 1.67wt% and 0.11mgHC/g respectively while the source rock potential (S2) ranges from 0.01mgHC/g to 0.17mgHC/g with an average value of 0.08mgHC/g. Also, the Hydrogen Index (HI) and the Oxygen Index (OI), ranges from 0.35mgHC/g TOC to 16.7mgHC/g TOC and 11.4mgCO/g TOC to 38.33mgCO/g TOC with an average value of 5.77mgHC/g TOC and 19.04mgCO/g TOC respectively. The Production Index (PI) and the Generative Potential (GP) range from 0.38 to 0.94 and 0.12mgHC/g to 0.34mgHC/g with mean values of 0.61 and 0.19mgHC/g respectively.
The results obtained from the cross plots of HI versus OI, S2 versus TOC and TOC versus GP; It shows that the shale samples from the Akinbo Formation have good organic matter richness to generate hydrocarbon, dominantly gas prone and from a Type III kerogen.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8335
2017-11-29T13:02:28Z
IJAG:ART
"171104 2017 eng "
2311-7044
dc
GIS based mapping and analysis of landslide hazard’s impact on tourism: a case study of Balakot valley, Pakistan
Hussain, Alamgeer
Institutes of Geo-Information & Earth Observation, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Pakistan
Riaz Khan, Mobushir
Abbas Malik, Naeem
Amin, Muhammad
Hussain Shah, Mazhar
Naveed Tahir, Muhammad
The Landslide occurs in mountainous area due to failure of slope through intensive rain and earthquake. Region wise Himalayan is one of prone area of world in context of slope failure hazard; i.e. Landslide, especially Balakot valley is well known for damage of public infrastructure, roads and badly affected the tourism sector. The objective of this study is to develop landslide hazard map and database inventory of balakot tehsil and identify the Tourist resorts landslide hazard condition and hazard prone road site and developed guidelines for tourist about hazardous site and their intensity of landside, which could be useful for tourism sector and sustainable development in balakot valley. In this study we used weighted overlay analysis in arc GIS environment on primary and secondary data raster layers, like slope map, Slope Aspect map, precipitation and seismic raster maps were used to develop landslide hazard zonation map of balakot tehsil. Slope and Aspect map were developed using 30 meter aster digital elevation model. Precipitation map were developed through Inverse Distance weighted (IDW) interpolation method on annual precipitation data acquired from Pakistan meteorological department. Seismic map were acquired from Geological Survey of Pakistan (GSP). Landslide zonation map has three hazards class high, Medium and low. The landslide exposure of high hazard class 499 sq.km while, Medium class 1016 sq.km and low hazard class having 749 sq. km exposure in balakot tehsil respectively. Landslide hazard zonation mapping using GIS and RS is the best way to assess the risk of landslide hazard in mountainous areas. The study recommended that ground penetrating radar (GPR) and soil testing based research well help to understand in-depth of landslide hazard condition in balakot valley.
Science Publishing Corporation
2017-06-27 19:51:45
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International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8372
2017-11-29T13:02:28Z
IJAG:ART
"171101 2017 eng "
2311-7044
dc
Correlation of physical and mechanical properties with ultrasonic pulse velocities of sandstones in Çenedağ, Kocaeli-Turkey
Aşcı, Metin
Kocaeli University
Kaplanvural, Ä°smail
Kocaeli University
KarakaÅŸ, Ahmet
Kocaeli University
Şahin, Özgün Kamil
T.P.A.O Ankara
KurtuluÅŸ, Cengiz
Kocaeli University
Correlation of physical and mechanical properties with ultrasonic pulse velocities (UPV) of sandstones in Çenedağ, Kocaeli-Turkey, NW was performed in this study. Physical and mechanical properties were defined and the relationships among the uniaxial compressive strength (UCS), porosity, void ratio, point load strength index Is(50),Schmidt hardness (RN) and bulk mass density by weight with ultrasonic pulse velocity of pink and cream colored sandstone unit of Lower Ordovician Çenedağ formation were investigated. In the scope of this research, 16 sandstone specimens were collected from various locations of Çenedağ formation in Çenedağ-Kocaeli, Turkey and laboratory experiments were implemented. Later, the statistical correlations were performed by regression analysis to evaluate the relationships between these properties and ultrasonic pulse velocity. Reasonably good correlations were determined between the UPV and physical and mechanical properties.
Science Publishing Corporation
2017-06-27 19:51:45
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http://www.sciencepubco.com/index.php/IJAG/article/view/8372
International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8377
2017-11-29T13:02:28Z
IJAG:ART
"171028 2017 eng "
2311-7044
dc
Geochemical Characteristics and Petrogenesis of Basement Rocks in Idoani Area, Ondo State, Southwestern Nigeria
Ogunyele, Abimbola
Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
Adegbuyi, Olatunde
Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
Odindu, Miracle
Achievers University, Owo, Ondo State, Nigeria
Erinfolami, Tunde
Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
Idoani area of Ondo State is an extension of the Upper Proterozoic Igarra Schist Belt of the Southwestern Nigerian Basement Complex. The area comprises mainly of metasedimentary rocks with subordinate amount of intrusives. Quartz-mica schist, phyllite, quartzite and banded gneiss are the dominant rock types in the area. These metasediments are intruded by the Older granite and other minor intrusives (pegmatite, aplite, dolerite dyke, quartz vein). Idoani rocks, as revealed by petrographic studies, are rich in quartz, alkali and plagioclase feldspars and mica with a low amount of opaque minerals. Geochemical studies and petrochemical variation diagrams show that the rocks are sub-alkaline, medium-K calc-alkaline to shoshonitic, peraluminous, and characterized by intermediate-high silica content and low-moderate amount of mafic oxides. Petrological and geochemical studies revealed that the quartz-mica schist and phyllite are metapelites while the quartzite is a meta-arkose, derived from a granitic – quartz-monzonitic source. The banded gneisses were probably derived from a hybrid sedimentary–igneous protoliths while the granite is of magmatic origin.
Science Publishing Corporation
2017-06-27 19:51:45
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http://www.sciencepubco.com/index.php/IJAG/article/view/8377
International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8468
2017-11-29T13:02:28Z
IJAG:ART
"171108 2017 eng "
2311-7044
dc
Crustal architecture, geodynamics and structural evolu-tion of en nuhud basin area, kordofan region, Sudan
Elmansour, Asim Abubabakr
Alimam, Omar
Lecturerin Alneelain university, khartoum, SUDAN
Borehole data, geophysical investigations and remote-sensing prospection were used to demonstrate structural setting of the study area. Up to lifting, erosion subsidence and sedimentation activities intervene in the completion of the present geological setting. Different fault systems of NNW-SSE and E-W trends that coincide with the regional structural trends control the formation of En Nuhud Basin. Strike-slipping along the NNW-SSE system manifests at the southeastern part of the basin. An age of Precamberian for the formation of these structures is proposed. Later in the Cainozoic, the area was subjected to tensional forces, and hence a pull-apart basin is formed as a half graben with stepping depth in the south. The thickness of the sedimentary sequence generally ranges between few meters at the boundaries and about 1000 meters at the southern part of the basin. The study area seems to be tectonically active during the subsequent time. Sync-tectonic deposition is clearly shown in the relatively thick Superficial Deposits above the subsided zones. Elevation of the study area above the surroundings indicates an inversion stage for the basin, and presence of far-field effects is suitable in this case.
Science Publishing Corporation
2017-06-27 19:51:45
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http://www.sciencepubco.com/index.php/IJAG/article/view/8468
International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8516
2021-02-19T14:17:44Z
IJAG:ART
"171129 2017 eng "
2311-7044
dc
Analysis of changes in climatological condition: a perspective from Barguna district of Bangladesh
Kormoker, Tapos
Department of Emergency Management, Patuakhali Science and Technology University, Bangladesh
Proshad, Ram
Department of Soil Science, Patuakhali Science and Technology University, Bangladesh
Mahmud Khan, Mohammed
Department of Public Health Engineering, Government of the People’s Republic of Bangladesh
Chandra Saha, Bidhan
Department of Agriculture Education, Muktizoddha Memorial College, Kalapara, Patuakhali, Bangladesh
This study investigated the long-term changes in climatological condition, such as temperature, rainfall, humidity, storms, and tidal surge and flooding in Barguna district of Bangladesh. The BMD (Bangladesh Meteorological Department) data were used for temperature, rainfall, and humidity. The data for storms have been collected from secondary sources i.e. various journals, website and various records. This study applied the time series statistical test to examine the long-term changes in climatological condition, such as temperatures (1970-2015), rainfall (1975-2013), humidity (1975-2013), and storms (1987-2007). A parametric technique of trend analysis was used in this study for its inclusive use and simplicity. Data screening and filling missing values were also done before the analyses. The analyses of measured temperature indices that the annual average maximum and minimum mean temperature has increased 1.16°C and 0.56°C respectively at the end of 2015 since 1982 indicating that the weather has been becoming hotter. The analysis of the last 30 years rainfall data of Barguna was compared with national total annual rainfall and no significant change observed. The number of wetter days has been increasing over the time and more rainfall has been happening within small time. There is also a significant change in relative humidity. A total of thirty-five depressions, storms and cyclones hit Barguna district during the last 130 years among which hard hit severe cyclones have occurred in 1935, 1965, 1970 and the most recent cyclone SIDR in 2007 was notable. The study found that storm surge level and surge induced coastal flooding reached from the outfall of Baleshwar River up to 50 km upstream at Morrelganj with high surge level. Therefore, this study will provide a condensed view in further studies in advanced statistical modeling in combination with future scenario analysis for micro and macro scale climate variable changes in Bangladesh.
Science Publishing Corporation
2017-06-27 19:51:45
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http://www.sciencepubco.com/index.php/IJAG/article/view/8516
International Journal of Advanced Geosciences; Vol. 5 No. 2 (2017)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8547
2021-02-19T14:17:45Z
IJAG:ART
"171204 2017 eng "
2311-7044
dc
Estimation of overpressures from porosity based method : a theoretical approach applied to the central/coastal swamp depo-belts of the Niger delta basin
Mkpese, Ubon
University of Port-Harcourt
The Depth-dependent compaction theory that variations in certain geophysical properties with depth; bulk density, formation resistivity together with sonic velocity being a reflection of the pressure regime is the basis for pore pressure prognosis study. Pore pressure prediction (PPP), when done accurately can be used to avert disaster and helps in safe drilling. A porosity-based model has been applied to predict overpressured zones in an onshore environment of the Niger delta basin. Zones with hard overpressures greater than a magnitude of 0.7 psi/ft are generally within 10000ft and below. Top of overpressures for studied wells ranges between 7000ft and 10000ft. Porosities in shale are of typical values ranging between 0.05 to 0.46. A robust concordance between PPP and MPP profiles for each of the wells validates the results here and confirms suitability of model to the studied area.
Science Publishing Corporation
2017-12-01 07:20:28
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http://www.sciencepubco.com/index.php/IJAG/article/view/8547
International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8573
2021-02-19T14:17:45Z
IJAG:ART
"171201 2017 eng "
2311-7044
dc
Basement Classification through Enhanced Magnetic Data Reductions in parts of Ekiti State, Southwestern Nigeria
Akingboye, Adedibu
Adekunle Ajasin University, Akungba-Akoko
Ogunyele, Abimbola
Adekunle Ajasin University, Akungba-Akoko
Enhanced magnetic data reductions via the use of various forms of filters were employed for basement classification in parts of Ekiti State. The data reductions and enhancement involve: reduction to equator (RTE), regional and residual, automatic gain control (AGC), downward continuation, upward continuations (1, 2, and 3 km), analytic signal (AS) and horizontal gradient (HG) to map and delineate basement rocks and structures, while surface relief and spectral plot were used to determine depth to top of magnetic sources. The images revealed that the study area is characterized by different lithologies. The rocks evinced lineaments and faults trending NE-SW (G–G’, H–H’, J–J’, K–K’), NNE-SSW, E-W (minor) and approximately N-S, while the dykes are in NW-SE, NNW-SSW directions. The analytic signal (AS) and horizontal gradient (HG) revealed high amplitude reversed Z-like shape as migmatite rocks, differentiating them from the two flanks with low amplitude signals as schist and quartzite schist of Ijero and Aramoko and the granitic intrusive within these migmatised rocks around Ijan, Gbonyin and Ise/Otun. The shaded relief and the spectral plot showed that the total depth to top of magnetic sources ranged from 20m to 1.8km for shallower and deeper sources respectively.
Science Publishing Corporation
2017-12-01 07:20:28
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http://www.sciencepubco.com/index.php/IJAG/article/view/8573
International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8609
2021-02-19T14:17:45Z
IJAG:ART
"171221 2017 eng "
2311-7044
dc
Radiometric evaluation of natural radioactivity and radiation hazard indices in soils from quarries sites in southwestern Nigeria
Ademila, Omowumi
Adekunle Ajasin University, Akungba Akoko, Ondo State, Nigeria
Ugo, Raphael
Adekunle Ajasin University, Akungba Akoko, Nigeria
Quarry activities increase the radiation dose received by humans by distributing the radionuclides associated with the natural resources to the soil surfaces. This study assessed the level of natural radiations in soils around two quarry sites to a maximum depth of 2.0 m and up to 500 m away from the sites. Activity concentration of 232Th, 238U and 40K in twenty soil samples collected from the quarries in Ondo State were measured by means of high resolution gamma-ray spectrometry. Average value of 232Th, 238U and 40K measured were 0.0027±0.0003 Bq/kg and 0.0036±0.00036 Bq/kg, 0.028±0.0012 Bq/kg and 0.026±0.0012 Bq/kg and 47.45±0.0313 Bq/kg and 69.42±0.0313 Bq/kg respectively. The estimated absorbed dose rates in all the soils investigated ranged from 0.38 nGy/hr to 15.67 nGy/hr and the annual mean effective dose equivalent varied from 2.13 to 10.28 µSv/yr. The results revealed that the activity concentrations and radiological hazard indices when compared with their corresponding world permissible values are less than the recommended safe levels. This indicates that quarry activities in the areas have not enhanced the background radiation level of the areas. Regular exposure of the quarry workers and the people around the study areas pose no health hazards in the near future.Â
Science Publishing Corporation
2017-12-01 07:20:28
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http://www.sciencepubco.com/index.php/IJAG/article/view/8609
International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8635
2021-02-19T14:17:46Z
IJAG:ART
"171219 2017 eng "
2311-7044
dc
Bacteriological and hydrogeochemical investigation of surface water and groundwater in Ikare- Akoko, Nigeria
Ogunribido, Tolulope
Adekunle Ajasin University
Ikare Akoko is underlain by the Pre - Cambrian Basement Complex rocks of Southwestern Nigeria and is about 6 kilometers away from Akungba Akoko that host Adekunle Ajasin University. The present study is to assess the quality of natural water for drinking and domestic purposes; perhaps they are susceptible to pollution due to increasing population. Fifteen water samples were collected from both surface water and groundwater during the onset of the dry season for physico – chemical and bacteriological analysis at the Central Research laboratory of Adekunle Ajasin University, Akungba – Akoko. The results indicate low pH, low total dissolved solids and low suspended solids. The concentration of total iron, sodium, calcium, magnesium, potassium, sulphate, bicarbonate and chloride are within the limit of WHO drinking water standard. Lead in most of the samples was below the detection limit but not higher than 0.1mg/L and also within the WHO limit of 0.3 mg/L. The bacteriological constituents of the water samples range between 15 and 30 cfu/ ml indicating bacterial contamination and sources may be due to water contact with cesspits or septic tanks. Therefore water in the study area requires microbial disinfection to upgrade its quality for drinking purposes. Piper’s diagram revealed that the hydrogeochemical evolution of water samples in this study area is Ca –HCO3- , this water have some salinity. Gibb’s diagram showed that the concentration of the dissolved chemical constituents were as a result of dissolution of host rock minerals due to water – rock interaction.
Science Publishing Corporation
2017-12-01 07:20:28
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http://www.sciencepubco.com/index.php/IJAG/article/view/8635
International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8713
2021-02-19T14:17:46Z
IJAG:ART
"180124 2018 eng "
2311-7044
dc
Quantitative prediction of overburden pressure and overpressure zones using well logs - a case study of an x-field in the Niger-delta basin, Nigeria
Opara, Chidozie
University of Port Harcourt
Ohakwereze, Michael
Salem University
Adizua, Okechukwu
Prediction and evaluation of overburden pressure are critical for the exploration and production of hydrocarbon reservoirs. Overburden pressure was estimated using well log (density and sonic) data obtained from two wells (B1 and B2) of an X - Field within the Niger Delta basin. Overburden pressure depends primarily on the bulk density data. Bulk density was extracted from density and sonic logs based on the log signatures. The bulk density was then used to determine overburden pressure using Eaton’s equation. The results reveal that overburden pressure increases linearly with depth, and an overburden gradient of 1.0 psi/Ft. was obtained. The overburden pressure was used to estimate pore pressure and vertical effective stress and thus enabled the determination of overpressure zones within the well.
Science Publishing Corporation
2017-12-01 07:20:28
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http://www.sciencepubco.com/index.php/IJAG/article/view/8713
International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8776
2021-02-19T14:17:46Z
IJAG:ART
"171227 2017 eng "
2311-7044
dc
Spectral analysis of Rayleigh waves in south-eastern parts of Niger delta, Nigeria
Emmanuel, Aniwetalu
Godfrey Okoye University,Enugu
Juliet, Ilechukwu
Nnamdi Azikwe University, Awka
Vivian, Oguadinma
Kingsley, Chiadikobi
Chukwuemeka Odumegwu Ojukwu University, Uli
Ezechimelu, Nnaji
Godfrey Okoye University,Enugu
Interference of ground roll energy on true seismic reflection records has continued to pose a serious challenge to exploration geophysicists. In view of this, amplitude and power spectra of the Rayleigh waves which are the precursor of the ground roll energy were derived from over 70 raw monitor records and plotted as a function of frequency. The objective is to determine the locus of ground energy in the seismic records, analyse their dispersion pattern and suggests viable ways of suppressing them. The results of the amplitude spectrum plots revealed that Rayleigh waved exhibit oscillatory behavior with very high-amplitude values, which correspond to the locus of ground roll energy. This energy is confined to very low frequency range of about 4-9Hz. The Power spectrum which was given as the square of the amplitude as a function of frequency showed appreciable lobes of breaths of the ground roll energy of about 0.5-0.7cm and their trend of dispersions. The power spectrum plots revealed several peaks excluding the early peaks that are direct indication of ground roll energy. The plots showed pronounced and constant decline in energy levels with increasing frequency and reaching very low decibel values of -60Db to -80Db at frequency range of 50Hz. This indicates that the environment is dispersive in nature which probably results from velocity layering. This is a precursor to seismic noise which among others can be suppressed in the field by designing filters with sharper cut off characteristics.
Science Publishing Corporation
2017-12-01 07:20:28
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http://www.sciencepubco.com/index.php/IJAG/article/view/8776
International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2017 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8789
2021-02-19T14:17:46Z
IJAG:ART
"180116 2018 eng "
2311-7044
dc
Qualitative characterization of groundwater sources around Nigeria National Petroleum Cooperation Oil Depot Aba, using multiple linear regressions modelling
O.C, Akakuru
NNAMDI AZIKIWE UNIVERSITY, AWKA
B.E.B, Akudinobi
NNAMDI AZIKIWE UNIVERSITY, AWKA
Qualitative characterization of groundwater sources around NNPC oil depot Aba, using Multiple Linear Regression Modelling has been done to predict the concentration of pollutants (heavy metals and Benzene, Toluene, Ethlybenzene, Xylene (BTEX)) in the study area. This was achieved through water level measurements, grain size, and water sample analyses. Fifty eight (58) water samples were collected within the study area and were subjected to chemical analyses. Eight (8) input parameters for the modelling comprised of the elevation data, depth to water table data, hydraulic head data, hydraulic conductivity data, transmissivity data, aquifer thickness data, and specific yield. The heavy metals and the BTEX were the depended variables, while the input parameters were the independent variables. Multiple Linear Regression (MLR) equations were modeled using MATLAB. The investigation revealed that ionic species of some important water quality concern include Arsenic, Copper, Mercury, Lead (heavy metals); Benzene, Ethlybenzene, and Xylene (organic pollutant). Pre-use treatment becomes a priority in all domestic and industrial application of these water sources. The MLR result revealed different R2: Arsenic (0.77), Copper (0.77), Iron (0.83), Mercury (0.80), Lead (0.61), Benzene (0.74), Toluene (0.84), Ethylbenzene (0.90) and Xylene (0.94), indicating that the predicted values closely tracked the actual values. A total of nine (9) MLR model equations were developed for the prediction of the concentration of pollutants in the study area. the study therefore recommends that it is fundamentally important that standard environmental management and appropriate environmental regulations should be established and enforced within the vicinity of the depot.
Science Publishing Corporation
2017-12-01 07:20:28
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http://www.sciencepubco.com/index.php/IJAG/article/view/8789
International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8946
2021-02-19T14:17:46Z
IJAG:ART
"180128 2018 eng "
2311-7044
dc
Flood modelling using satellite-based precipitation estimates and digital elevation model in eastern Iraq
Abdulrazzaq, Zaidoon
Directorate of Space and Communications, Ministry of Science and Technology
Aziz, Nadia
Directorate of Space and Communications, Ministry of Science and Technology
Mohammed, Abdulkareem
Directorate of Space and Communications, Ministry of Science and Technology
Increasingly available and a virtually uninterrupted supply of satellite-estimated rainfall data is gradually becoming a cost-effective source of input for flood prediction under a variety of circumstances. The study conducted in Wasit province/Eastern Iraq when a flood occurs due to heavy rainfall in May 2013. In this study the capability of Tropical Rainfall Measuring Mission (TRMM) rainfall daily data have been used to estimate the relationship between measured precipitation and the Digital Elevation Model (DEM), also to study the relationship between rainfall intensity and flood waters areas. Rainfall estimation by remote sensing using satellite-derived data from the Tropical Rainfall Measuring Mission (TRMM) is a possible means of supplementing rain gauge data, having the better spatial cover of rainfall fields. The approach used throughout this paper has integrated recently compiled data derived from satellite imagery (rainfall, and digital elevation model) into a GIS geodatabase to study the relationship between rainfall intensity and floodwater's areas then the results' comparison with the Normalized Difference Water Index (NDWI) after the flood. ArcGIS software has been used to process, analyze the archived Tropical Rainfall Measuring Mission (TRMM) precipitation data, and calculate NDWI from Landsat 8 images. In conclusions, the study explains the flood-area clearly captured by the TRMM measurements; and the region’s water increased. Also, good correlation between measured precipitation and the Digital Elevation Model (DEM) has been detected.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/8952
2021-02-19T14:17:46Z
IJAG:ART
"180130 2018 eng "
2311-7044
dc
Geotechnical properties of lateritic soil as subgrade and base material for road construction in Abeokuta, Southwest Nigeria
Oluyinka, Layade Gideon
FEDERAL UNIVERSITY OF AGRICULTURE ABEOKUTA
Olubunmi, Ogunkoya Charles
JAFAD College of Health Technology, Oru Ijebu, Nigeria.
Lateritic soils that overburden Mohammad Buhari Estate in Abeokuta area of Ogun State, Nigeria is in great use for road construction. However, little is known of their geotechnical properties and suitability as base, sub-based and sub-grade materials for road construction. This study is aimed at utilizing in accordance with regulatory standards of Nigeria, the geotechnical techniques to investigate the properties of this lateritic soil. The samples were collected at 0. 25m deep at different locations and were subjected to the following laboratory test; Particle size analysis, Atterberg limits test, Compaction test, Californian Bearing Ratio test, Moisture content and Specific gravity test. The result shows un-soaked CBR test from 12.52-55.84 %. The specific gravity results range from 2.57-2.89 while the optimum moisture content and maximum dry density range from 18.20-28.30% and 1.48-1.81mg/m3 respectively. The liquid limit, plastic limit and plastic index ranges from 12.0 to 40.1%, 10.0 to 22.0% and 2.8 to 20.4% respectively. This implies that lateritic soil present throughout the study area is suitable for use as sub-base and base materials since the geotechnical properties are fairly within the regulatory standards of Nigeria.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/9170
2021-02-19T14:17:46Z
IJAG:ART
"180308 2018 eng "
2311-7044
dc
Geophysical study in En Nuhud basin area
Elmansour, Asim Abubabakr
Lecturerin Alneelain university, khartoum, SUDAN
Attag Omar, Omar
Lecturerin Alneelain university, khartoum, SUDAN
Integration of gravity, magnetic, resistivity and geophysical well logging methods were used to reveal the geological structures and the hydrogeological conditions. Magnetic mineralogy among the primary bed rocks or within the sedimentary sequence considerably affect the responses of gravity and magnetic methods. En Nuhud Basin is structural depression as a half-graben produced by displacement along a system of faults. Gravity measurements give a sense of that the area was dissected by different fault trends of NNW-SSE and E-W trends, with down throws towards the center of the basin, and variable magnitudes of displacement. The thickness of the sediments occupying the basin vary from few meters at the periphery of the basin to about 1000 meters at the southern parts. The water saturated zones in the Nubian Formation show good characteristics and a thickness range from 12- 140 m. The weathered Basement Complex is sometimes serve as aguiferous zone.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/9174
2021-02-19T14:17:46Z
IJAG:ART
"180220 2018 eng "
2311-7044
dc
Heavy metal toxicity in agricultural soil due to rapid industrialization in Bangladesh: a review
Proshad, Ram
Department of Soil Science, Patuakhali Science and Technology University, Bangladesh http://orcid.org/0000-0002-4878-9616
Kormoker, Tapos
Department of Emergency Management, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
Mursheed, Niaj
Department of Horticulture, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
Monirul Islam, Md.
Bhuyan, Md. Isfatuzzaman
Sazedul Islam, Md.
Mithu, Tanvir Nahid
Department of Agronomy, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
Heavy metal is a member of loosely defined subset of elements that exhibit metallic properties. It mainly includes the transition metals, some metalloids, lanthanides, and actinides. Heavy metals are ubiquitous in the environment, as a result of both natural and anthropogenic activities. They are stable and cannot be destroyed, and therefore tend to accumulate in the environment. In recent years, there has been a substantial concern over the extent of contamination of the environment with toxic elements. Soil pollution caused by rapid industrial activities has become a worrisome phenomenon due to its impact on soil and environment. Heavy metal pollution in soil arising from industrial discharges significantly poses a great threat to the environment. Heavy metals come to the soil by several ways and the soil becomes toxic which cause serious problem to the environment. In toxic soil, microorganisms cannot persist and there create an imbalance situation in the soil. The main objective of this study was to assess the problem of heavy metal contamination in industrial area soil in Bangladesh with environmental risk assessment.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/9601
2021-02-19T14:17:46Z
IJAG:ART
"180313 2018 eng "
2311-7044
dc
Petrophysical evaluation and lithology delineation using cross-plots analysis from some onshore wells in the Nigerian-delta, west Africa
Ohakwere-Eze, Michael
Michael Okpara University of Agriculture, Umudike.
Igboekwe, Magnus
Michael Okpara University of Agriculture, Umudike.
Chukwu, Godswill
Michael Okpara University of Agriculture, Umudike.
Reservoir rock attributes such as porosity, permeability, pore-size geometry and net-to-gross ratio can grossly be affected by inaccurate delineation of the sand intervals. It is therefore pertinent that well log cross-plot is utilized to accurately delineate the sand body and correctly evaluate the petrophysical properties of the mapped sandstone intervals. Three wells (A, B and C) were studied from which analysis of various cross-plots were done. The cross-plots of the density and gamma ray, Acoustic impedance and VpVs ratio with various colour indicators such vertical depth, porosity, resistivity, water saturation etc. were generated using the Hampson Russel software. The hydrocarbon interval in the area occurs between 5870ft to 8900ft for well-A, 5500ft to 5910ft for well-B and 5700ft to 7230ft for well-C as interpreted from the well logs with an average porosity range from 26 to 39%. Cross-plot analysis was carried out to validate the sensitivity of the rock attributes to reservoir saturation condition. The cross-plot results clusters shows two major lithologies of sandstone and shale with occasional intercalation of sand and shale units. For the three wells considered, ten reservoirs were observed. Fluid detection analysis shows that reservoirs A1-A2 (well-A), B1-B2 (well-B), C3-C4 (well-C) were found to contain oil, while reservoir A3-A4 (well-A) and C1-C2 (well-C) contains gas. This study has shown that the cross-plots approach can be used to accurately delineate reservoirs for further formation evaluation. It therefore means that an outright estimation of petrophysical properties on wrongly delineated reservoirs can signiï¬cantly affect the porosity, permeability, pore-size geometry and net-to-gross ratio of the reservoir units.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/9791
2021-02-19T14:17:46Z
IJAG:ART
"180331 2018 eng "
2311-7044
dc
Assessment of heavy metals with ecological risk of soils in the industrial vicinity of Tangail district, Bangladesh
Proshad, Ram
Department of Soil Science, Patuakhali Science and Technology University-8602, Bangladesh http://orcid.org/0000-0002-4878-9616
Islam, Md. Saiful
Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh
Kormoker, Tapos
Department of Emergency Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh
This study was conducted to assess the ecological risk of heavy metals in soils collected from the industrial vicinity of Tangail district in Bangladesh. In this study, the levels of six heavy metals namely chromium (Cr), nickel (Ni), copper (Cu), arsenic (As), cadmium (Cd), and lead (Pb) in 15 sampling sites around the industrial vicinity of Tangail district in Bangladesh were assessed. The mean concentration of Cr, Ni, Cu, As, Cd and Pb in studied soils were 11.56, 23.92, 37.27, 6.11, 2.01, and 17.46 mg/kg, respectively. Certain indices, including the enrichment factor (EF), contamination factor (Cif), geoaccumulation index (Igeo), pollution load index (PLI), toxic unit analysis, and principal component analysis (PCA) were used to assess the ecological risk. The enrichment factor of all the studied metals for all sampling sites were in the descending order of Cd > Cu > As > Pb >Ni > Cr. The contamination factor values revealed that the studied soils were highly impacted by Cd. The pollution load index (PLI) values of Cd were higher than 1, indicating the progressive deterioration of soil due to Cd contamination. In the context of potential ecological risk (PER), soils from all sampling sites showed moderate to very high potential ecological risk.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/10124
2021-02-19T14:17:46Z
IJAG:ART
"180422 2018 eng "
2311-7044
dc
Application of model-based inversion technique in a field in the coastal swamp depobelt, Niger delta
Austin, Okoli
Department of Geology, Federal University of Technology, Owerri
Samuel I., Onyekuru
Department of Geology, Federal University of Technology, Owerri
Agbasi, Okechukwu
University of Uyo, Uyo, Akwa Ibom State, Nigeria
Abdulrazzaq, Zaidoon Taha
Ministry of Science and Technology/ Space Directorate and Communication.
Considering the heterogeneity of the reservoir sands in the Niger Delta basin which are primary causes of low hydrocarbon recovery efficiency, poor sweep, early breakthrough and pockets of bypassed oil there arises a need for in-depth quantitative interpretation and more analysis to be done on seismic data to achieve a reliable reservoir characterization to improve recovery, plan future development wells within field and achieve deeper prospecting for depths not penetrated by the wells and areas far away from well locations. An effective tool towards de-risking prospects is seismic inversion which transforms a seismic reflection data to a quantitative rock-property description of a reservoir. The choice of model-based inversion in this study was due to well control, again considering the heterogeneity of the sands in the field. X-26, X-30, and X-32 were used to generate an initial impedance log which is used to update the estimated reflectivity from which we would obtain our inverted volumes. Acoustic impedance volumes were generated and observations made were consistent with depth trends established for the Niger Delta basin, inverted slices of Poisson impedances validated the expected responses considering the effect of compaction. This justifies the use of inversion method in further characterizing the plays identified in the region.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/10184
2021-02-19T14:17:46Z
IJAG:ART
"180417 2018 eng "
2311-7044
dc
Performance of some jute & allied fiber varieties in the southern part of Bangladesh
Islam, Md.Monirul
1Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
Islam, Mohammad Kabirul
1Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
Hoque, Md.Fazlul
1Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
Bhuyan, Md.Isfatuzzaman
2Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh
Islam, Md.Sazedul
1Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
Hassan, K.M.Mehadi
3Department of Agronomy, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
Ferdous, Mahbuba
1Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
The present study was conducted to know the performance of growth, yield contributing parameters and yield of some Tossa and Deshi Jute and also some Allied fiber varieties at the agronomy field laboratory during the period from March to September 2012. Twelve Jute and Kenaf vareities viz. CVL–1 (V1), HC–2 (V2), 0–9897 (V3), CVE–3 (V4), 0–72 (V5), BJC–7370 (V6), HC–95 (V7), BJC–83 (V8), VM–1 (V9), 0–795 (V10), HC–3 (V11), BJC–2142 (V12) were taken and catagorized into three viz. Deshi (V1 to T5), Tossa (V6 to V8) and Kenaf (V9 to V12). The single factor experimental data was laid out in a completely randomized block design with three replications and the means were adjudged by DMRT at 5% level of probability. Varietals performance of Jute and Kenaf were showed statistically significant variation among the studied whole growth, yield and yield attributing traits. Among the varieites, the Jute variety BJC–7370 porduce the tallest plant (299.0 cm), medium base diameter (27.04) mm and longest root (28.44 cm) at harvest. Dry matter viz. root (13.51 g plant–1), stem (48.51 g plant–1), leaf (12.87 g plant–1) and TDM (74.89 g plant–1) production had also higher in BJC–7370. However, base diameter (26.84 mm) and dry weight of leaf (12.37 g plant–1) were statistically similar with Kenaf variety HC–3. The Jute variety BJC–7370 had also showed greater results on various yield characters viz. green (whole plant) weight (232.4 g plant–1) and stick (58.97 g plant–1) and fiber yield (58.97 g plant–1).The Kenaf variety HC–3 was also showed fiber (19.91 g plant–1) production. So, therefore, the Jute variety BJC–7370 and Kenaf vareity HC–3 gave understanding superiority on growth, yield and yield contributing traits as well as higher seed and fiber yield under the AEZ–13. So, Jute variety BJC–7370 or Kenaf variety HC–3 would be more successful productive variety in AEZ– 13 compare to the other studied Jute and Allied fiber varieties.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/10738
2021-02-19T14:17:47Z
IJAG:ART
"180627 2018 eng "
2311-7044
dc
Insight into geochemistry of basaltic rocks from Mt Cameroon and characterization of the mantle source
Ngounouno Yamgouot, Fadimatou
UNIVERSITY OF NGAOUNDERE, Cameroon
Bertrand Gbambie Mbowou, Isaac
UNIVERSITY OF NGAOUNDERE, Cameroon
Ngounouno, Ismaïla
UNIVERSITY OF NGAOUNDERE, Cameroon
Abdoul Youpoungam, Azizi
UNIVERSITY OF NGAOUNDERE, Cameroon
Daama, Isaac
UNIVERSITY OF NGAOUNDERE, Cameroon
Déruelle, Bernard
Université Pierre et Marie Curie, 4, place Jussieu, 75252 Paris cédex 05, France
Alkaline volcanic activities occurred in the Mt Cameroon at the ocean-continent boundary of the Cameroon Line. It is characterized by a volcanic association of alkali basalts and hawaiites extruded during the late Miocene to Recent times. The major and trace element geochemistry of the Mt Cameroon are consistent with the fractional crystallization of olivine ± clinopyroxene ± plagioclase (± amphibole). Petrographical and mineralogical study reveals the presence of xenocryts (olivine, clinopyroxene and spinel) in Mt Cameroon basalts. Their composition are similar to xenoliths and rocks crystals and they come from cumulates formed in the upper lithospheric mantle. Mt Cameroon magmas were generated near the boundary of garnet and spinel mantle stability domains (60–75 km depth), at the base of the lithospheric mantle that the compositions of the Mt Cameroon magmas are consistent with derivation from a infralithospheric mantle that was metasomatised by carbonatite melts. Basaltic volcanism in the Mt Cameroon occurred probably as a result of minor plume activity coupled with lithospheric extension.
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Science Publishing Corporation
2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/10907
2021-02-19T14:17:46Z
IJAG:ART
"180530 2018 eng "
2311-7044
dc
Foraminiferal biostratigrpahy of oshi-13 field, coastal and central swamp depobelt, Niger delta basin, Nigeria
R. Nimnu, J
Wesley University of Science and Technology, Ondo State, Nigeria
O Aigbadon, G
Nnamdi Azikiwe University,Awka
Ogbikaya, F
A high resolution Foraminiferal biostratigrpahic study has been carried out using data from three wells located in the Coastal and Central Swamp depobelts of Niger Delta.
The study defined six (N6-N15) Foraminiferal zones for the early to middle Miocene Niger Delta on the basis of index Foraminiferal and this was correlated to Blow, 1969 and Bergreen et al., 1995. Foraminiferal analysis shows that Oshi-13
Field is very rich in calcareous and araneceous benthics, calcareous and planktic foraminiferal. The abudance of fossils and index fossils are responsible for constructing the biostratigraphic chart and hydrocarbon saturation in the field. The biostratigraphy chart constructed act as a basis in establishing the ages of sediments/ sequence in the  studied field.
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Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/11471
2021-02-19T14:17:48Z
IJAG:ART
"190511 2019 eng "
2311-7044
dc
Hydrocarbon prospectively determination of “eagle fieldâ€, coastal swamp ii Niger delta.
M T, Olowokere
Obafemi Awolowo University, Ile Ife.
Hassane, Amadou
Obafemi Awolowo University, I
M. A, Alonge
Obafemi Awolowo University, I
E. Ajibade, Adekola
Obafemi Awolowo University, I
Seismic and well log data were collected from onshore depobelt of Nigeria with a total of 1000 seismic lines and 3 wells. The main objective of the study was to determine hydrocarbon prospectivity and reserve estimates of the field. The evaluation centred on seismic interpretation and 3D visualisation (DHI detection) of the “Ejanla Field†3D in total, Four horizons have been interpreted regionally for correlation purposes and three as prospect specific horizons. Four prospects and some, more speculative leads were identified in the area of which most are conventional three way dip/fault closures and some hanging wall closures. The potential for stratigraphic trapping was also recognized. The study showed that the small closure areas and limited hydrocarbon column lengths affected the number of prospects and at the shallow levels.The main risk to oil prospectivity in the area as revelled by the data interpretation is gas which may have resulted from the observed higher geothermal gradient in the deeper depth. Reservoir development and retention (overpressure) for prospects and leads in the deeper and more distal sedimentological settings form additional risks.
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Science Publishing Corporation
2019-05-04 09:30:05
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International Journal of Advanced Geosciences; Vol. 7 No. 1 (2019)
eng
Copyright (c) 2019 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/11633
2021-02-19T14:17:46Z
IJAG:ART
"180605 2018 eng "
2311-7044
dc
Environmental Impact Assessment: Integrated Evaluation of Bridge Construction Project in Bangladesh
Hasan, Irteja
Assistant Consultant (Environment), EQMS Consulting Ltd, Banani, Dhaka -1213
Shaha, Milton
Department of Disaster Risk Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602
Shafiqul Islam, Md
Assistant Consultant (Environment), EQMS Consulting Ltd, Banani, Dhaka -1213
Sirajul Islam, Md
Professor, Department of Environmental Science and Resource Management, Mawlana Bhasani Science and Technology University, Santosh, Tabgail-1902, Bangladesh
Solayman, Md
Faculty of Disaster Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602
Hossen, Miraz
Faculty of Disaster Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602
Humayun Kabir, Md
Assistant Consultant (Environment), EQMS Consulting Ltd, Banani, Dhaka -1213
Environmental Impact Assessment (EIA) may provide a mechanism for executing sustainable development and it is also becoming a very significance revision before authorizing of any project plan. EIA helps to decision making process whether the project is beneficial or harmful effects for the environment. Both on site and off site environmental impacts can be reduced through undertaking EIA for any bridge construction activities. This paper mainly concentrates on to find out potential environmental impact during the construction, operation and maintenance phase of the project using different matrix method. It also finds out the effective mitigation measures of the adverse impacts that will be helpful for the surrounding environment. Primary data were collected from field survey, focus group discussion. Most of the impacts and other consequences are identified based on public perception and the interview of the key personnel’s. Secondary data were also collected for conducting the research. The study found that the bridge is connecting three regions (Bauphal, Patuakhali and Barisal) and it will be a great achievement for the local coastal community. This new bridge project will not only increase the communication facilities but also other facilities such as economic flow, medical facilities etc. The EIA study founds some major negative Impacts such as loss of land and resettlement, loss of aquatic habitat, loss of local trees varieties, loss of agricultural lands, loss of vegetation, potential impact on ecological resources, impact on fish migration etc. But analyzing the overall impact of the environment, the EIA study found that that the possible negative impact is not so high and the project can be implemented. Different environmental management plans are suggested for reducing the potential negative impact of the bridge construction project.
Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/11713
2021-02-19T14:17:46Z
IJAG:ART
"180612 2018 eng "
2311-7044
dc
Effect of green manure along with nitrogenous fertilizer on the growth and yield of turmeric (curcuma longa l.) of Bangladesh
Ferdous, Mahbuba
Patuakhali Science and Technology University, Dumki, Patuakhali, Dhaka, Bangladesh
Kabirul Islam, Mohammad
Patuakhali Science and Technology University, Dumki, Patuakhali, Dhaka, Bangladesh
Monirul Islam, Md.
Patuakhali Science and Technology University, Dumki, Patuakhali, Dhaka, Bangladesh
Isfatuzzaman Bhuyan, Md
Sazedul Islam, Md
Sarkar, Purmendu
Turmeric is an important spice crop of Bangladesh. A field experiment was conducted at farmer’s field of North Jhatibunia, Mirzagonj, Patuakhali during April, 2015 to February, 2016. The study was performed to find out the effect of green manure and nitrogenous fertilizer on the growth and yield of turmeric (BARI Halud-2), in coastal region of Bangladesh. In this study different combinations of green manure along with nitrogenous fertilizer were used. There was eight treatment combinations (viz. 7 ton biomass/ha + 100 kg N/ha, 7 ton biomass/ha + 80 kg N/ha, 7 ton biomass/ha + 60 kg N/ha, 7 ton biomass/ha + 40 kg N/ha, 7 ton biomass/ha + 20 kg N/ha, 7 ton biomass/ha, 100 kg N/ha and control). The highest number of leaves per plant (11.67) were recorded by the combined application of 7 ton biomass/ha along with 100 kg N/ha. The highest plant height (80.70 cm) and the longest leaf length (47.33 cm) were recorded by the application of 100 kg N/ha. The highest number of tillers per plant (7.67), maximum number of primary rhizomes per plant (9.00), maximum fresh weight of clump (189.67 g), highest fresh weight of roots (48.01 g), maximum fresh weight of rhizomes (277.70 g), maximum dry weight of clump (20.01 g), highest dry weight of roots (9.25 g), maximum dry weight of rhizomes (67.50 g) and maximum yield of fresh rhizome per hectare (6.64 tons) were recorded by the combined application of 7 ton /ha biomass+ 40 kg N/ha. Highest number of secondary rhizomes per plant (17.00) and maximum number of tertiary rhizomes per plant (7.00) were recorded by the application of 7 ton biomass/ha + 60 kg N/ha. With a few exception, the best performance in terms of growth and yield of turmeric were found from the combination of 7 ton biomass /ha + 40 kg N/ha.
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Science Publishing Corporation
2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/11815
2021-02-19T14:17:47Z
IJAG:ART
"180612 2018 eng "
2311-7044
dc
Petrophysical Analysis of Well Logs for the Estimation of Oil Reserves in Southern Niger Delta
S S, Paul
University of Uyo
., Okwueze
University of Calabar
E, E
University of Uyo
K I, Udo
Gamma Ray log, Resistivity log, Density log, Micro-spherical focus log (MSFL), Deep Induction log (ILD) , Medium Induction log(ILM) and Spontaneous Potential (SP) log were collected for 2 wells in onshore Niger Delta. These insitu well logs were analyzed and interpreted. Porosity, permeability, water saturation, reservoir thickness and Shale volume were estimated for each hydrocarbon bearing zone delineated for each well. The parameters obtained were further analyzed and interpreted quantitatively to estimate the hydrocarbon potentials of each well. Twelve reservoir zones of interest (sand bodies) were delineated, correlated across the field and were ranked using average results of petrophysical parameters. In well one, Reservoirs E and F were identified as the thickest with 41ft each while reservoir A is the smallest in thickness (30ft). Petrophysical properties of hydrocarbon bearing zones delineated in well one ranged from 17.81% to 23.20% for porosity, 1292.09mD to 2018.17mD for permeability and 56.40% to 68.40% for hydrocarbon saturation compared to well 2 with 14.67% to 19.52% for porosity, 1211.61mD to1843.11mD for permeability and 51.80% to 66.40% for hydrocarbon saturation. The estimated averages of petrophysical properties for well one are 20.14% porosity, 1643.65mD permeability, 63.20% hydrocarbon saturation compared to well 2 with 15.55% porosity, 1582.58mD permeability and 61.93% hydrocarbon saturation. Results show 148.45MMBB and 145.91MMBB as oil reserve (Recoverable) for the field. From the results obtained, well one is likely to be more productive than well [2] and the field has exploitable oil in place.
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2017-12-01 07:20:28
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International Journal of Advanced Geosciences; Vol. 6 No. 1 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/12660
2021-02-19T14:17:47Z
IJAG:ART
"180723 2018 eng "
2311-7044
dc
Groundwater Level Fluctuation in Response to Climatic Variation and its Geotechnical Implication in Part of Awgu Shale, Central Benue Trough, Nigeria
., Umar
University of Nigeria, Nsukka
Degree, Nuhu
University of Nigeria, Nsukka
., Idris
University of Nigeria, Nsukka
Giza, Ibrahim
Aliyu Itari, Abdullahi
The role of climate variation on groundwater level and its geotechnical implication was studied. Static water levels (SWL) and elevations of 57 dug wells and boreholes were measured during dry and wet seasons. The differences between the SWL for dry and wet season was used to establish the depth of groundwater fluctuation, while geophysical investigation was conducted to delineate the subsurface geo-electric layers. This information is vital for groundwater assessment and evaluation, however, this research is biased towards its geotechnical implications. SWL varied between 5.5 – 13 and 2.2 - 9.2 meters below sea level (mbsl), while groundwater elevation ranges from 131.8 – 157.2 and 136-160 meters above sea level (masl) for dry and wet seasons respectively. The depth of fluctuation (active zone) lies between 1.1 – 5.9 mbsl. The wells showed a direct rapid response to short term seasonal precipitation attributable to climate variation, which implies a shallow aquifer. Groundwater flows from the northern parts towards the southern parts. Foundations in the study area are underlain by sandy-clays, clays and sands as revealed by geophysical investigations. Engineering structures with shallow foundation may be prone to shrink-swell behavior, and should be laid beyond active zone.
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2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/13151
2021-02-19T14:17:47Z
IJAG:ART
"180729 2018 eng "
2311-7044
dc
Principal component analysis of rare earth elements in Sechahun iron deposit, central Iran.
Sarparandeh, Mohammadali
Amirkabir university of technology
Hezarkhani, Ardeshir
Amirkabir university of technology
Principal component analysis (PCA) is a sufficient way for finding the groups of correlated features. In geochemical exploration of precious metals, it helps to cluster the elements. Especially for rare earth elements (REEs), because of multiplicity of parameters, the proposed method helps to have a better interpretation. Geochemical exploration programs aim to find the hidden information about specific element(s), its abundance, its behavior and its relation with minerals and some other elements. REEs are a group of elements with same chemical behavior. However, some chemical characteristics of light rare earth elements (LREEs) and heavy rare earth elements (HREEs) are different. In this study, relationship between these elements was investigated by applying PC analysis method in Kiruna-type iron ore deposit of Se-Chahun in Central Iran. The four first PCs covered the most variances of the REEs. All the elements showed a correlation together with exception of La, Ce, Nd, Yb and Y. Results of PC analysis are related to the anomaly of Rare earth elements. It can be concluded that in anomalous areas, loadings of the principal components are affected by variance and anomalous content of the elements.
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Science Publishing Corporation
2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/13274
2021-02-19T14:17:47Z
IJAG:ART
"180723 2018 eng "
2311-7044
dc
Characterization of hydrocarbon reservoir by pore fluid and lithology using elastic parameters in an x field, Niger delta, Nigeria
., Akpabio
University of Uyo, Uyo, Akwa Ibom State, Nigeria
O, Idara
University of Uyo,Uyo, Akwa Ibom State
., Ojo
T, Odunayo
Quantitative rock physics analysis was carried out to determine the lithology and pore fluid of a reservoir in the Niger Delta. Density, compressional wave velocity and shear wave velocity logs were used as input to calculate elastic parameters such as velocity ratio, Poisson’s ratio, and Bulk Modulus, after estimating the hydrocarbon reservoir in the X field. The calculated velocity ratio log was used to differentiate between sand, sandstone and shale. Poisson’s ratio and velocity ratio were used delineate pore fluid content; gas sand, oil sand and sandstone formation from cross plot analysis. The reservoir in the field lies ranges from 9050 - 9426.5ft, (2760.25 – 2874.93m), this confirm what is obtained in the Niger Delta Basin. The Net Pay zones show an economical viable reservoir, it Net pay depth is 39 – 73.5ft. The Porosity and Permeability of the reservoirs suggested a productivity hydrocarbon reservoir. The reservoir lies between Gas sands, Oil sands and Brine sands, reservoir 2 and reservoir 3 are oil sand reservoirs while reservoir 1 lies between an oil sand and a brine sand.
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Science Publishing Corporation
2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/13475
2021-02-19T14:17:47Z
IJAG:ART
"180810 2018 eng "
2311-7044
dc
Subsurface mapping and geochemical investigation of a marble deposit around Igarra, Southwestern Nigeria
Oluwajana, Oladotun
Department of Earth Sciences, Adekunle Ajasin University, Akungba-Akoko
Ogunyele, Abimbola
Department of Earth Sciences, Adekunle Ajasin University, Akungba-Akoko
Egunjobi, Joseph
Department of Earth Sciences, Adekunle Ajasin University, Akungba-Akoko
Ajayi, Aiyedotun
Department of Earth Sciences, Adekunle Ajasin University, Akungba-Akoko
Subsurface mapping of a marble deposit around Igarra and geochemical analysis of seven marble samples collected at different depths in four drill holes were carried out with the aim of determining the chemical compositions and economic viabilities of the deposit. Subsurface mapping and lithologic description revealed that snow-white and grey to dark grey marble layers occur in the four drill holes. Results of the geochemical analysis show that the CaO and MgO contents of the snow-white marble samples retrieved from depths between 10 m and 20 m (43.90-48.90 wt. % and 0.19-2.35 wt. % respectively) reflected calcitic to fairly dolomitic nature of the marble samples. This is confirmed by the high CaCO3 (91.65-95.75 wt. %) content of the samples. Grey to dark grey marble samples taken from depths between 30 m and 48 m have moderately high CaO contents (44.00-52.60 wt. %) and significantly high MgO contents (3.50-8.70 wt. %) which makes them highly dolomitic and impure. The pure, calcitic to fairly dolomitic marble is considered suitable as raw material for Portland cement production, flux in steel making and for paper production while the impure, dolomitic marble is suitable for making dimension stones and structural wares for landscaping purpose.
Science Publishing Corporation
2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/13505
2021-02-19T14:17:47Z
IJAG:ART
"180726 2018 eng "
2311-7044
dc
Geochemical and geotechnical characterization of soils developed on volcanic rocks on the Bamenda mountain (Cameroon volcanic line)
Dongmo A, Kagou
University of Dschang, Cameroon
C .S, Guedjeo
University of Dschang, Cameroon
A.T, Primus
University of Dschang, Cameroon
P, Wotchoko
University of Bamenda, Cameroon
M.L, Chenyui
University of Dschang, Cameroon
B.T, Aziwo
University of Dschang, Cameroon
K.V, Kamgang
The weathering mechanism of rocks exposed under the same conditions on the Bamenda Mountain is not well understood. The aim of this study is to characterize basalt, trachyte and rhyolite and their products on the geochemical and geotechnical aspect. Here three wells were hand dug on rocks developed on basalt, trachyte and rhyolite and studied. The results showed that, Ki values (0.34-6.57) indicate SiO2 are more leached on soils developed on basalt than those on trachyte and rhyolite. CIA (72.62-97.8) and CIW (72.76-98.8) indicate an advanced to extreme chemical weathering in this environment, with rhyolite and trachyte more weathered than basalts. Soils formed on basalt have ICV >1 signifying they are young and immature, while those on trachyte and rhyolite ICV =0.3-0.5 indicate intense chemical weathering. Al (EFAl=1.5) and Fe (EFFe=1.3) are enriched in the soils and while SiO2, Na, K, Ca and Mg are depleted in the soils profile as one moves upward. Geotechnically, these soils are predominantly silts, well graded, less plastic (LI<0), plastic (CI>1) to moderately plastic (PI=7.2-15.8). Soils developed on rhyolite have high clay content MBV= 3.3-8, but low water content (10-42%). Texturally, these soil are silty loam, loam to sandy loam soils. Soil strength of the soils is low: cohesion (<0.5bar), angle of internal friction (10-43°), with shallow landslides (1-2m) more likely to occur on trachyte and on rhyolites.
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Science Publishing Corporation
2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/13677
2021-02-19T14:17:51Z
IJAG:ART
"200701 2020 eng "
2311-7044
dc
Evaluation of groundwater resources within Ankpa and environ, north central Nigeria
A.O, Omali
KOGI STATE UNIVERSITY, ANYIGBA, NIGERIA
A.O, Usman
KOGI STATE UNIVERSITY, ANYIGBA, NIGERIA
Y, Baba
KOGI STATE UNIVERSITY, ANYIGBA, NIGERIA
Geophysical and Geochemical assessment of groundwater in part of Northern Anambra Basin has been evaluated. The groundwater potentials, aquifer characteristics and groundwater quality within the study area have been delineated. This is aimed is at establishing the depth to watertable and potability of the groundwater within the area. Twenty-(20) vertical electrical soundings (VES) were acquired with a maximum half current electrode spacing of 150 metres using ABEM 4000 SAS Tetrameter. Hydrogeochemical analysis was carried out using HANA Model Hi 83200 multi parameter ion specific meter to evaluate the basic anions and cations in the water samples. Piper, Durov and Schoeller semi-logarithmic plots were drawn to characterize the water types. Results from the geo-electric sections revealed the presence of five to seven geo-electric layers. The depth to water table ranges between 20m and 161.1m. The depth to Watertable is deepest around Ogene area with depth of 161.1m. The result of the geophysical analysis correlates with the borehole data acquired from the study area. Results from hydrogeochemical studies revealed that the concentrations of ions are in the order of Ca2+> Na2+>K+>Mg2+ and HCO3->NO3->SO42->Cl- in Anyigba area, Na2+>K+> Ca2+>Mg2 and Cl- >HCO3->NO3->SO42- Ankpa area while in Ejule area Mg2+>Na2+>K+> Ca2+and Cl- >HCO3->NO3->SO42-. These fall within the WHO (2006) drinking water standard. It is recommended that an average depth of 75m should be drilled for borehole within the northern part of the studied area and a depth of about 100m in the southern part of the study area. In addition, the water is recommended for domestic use.
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Science Publishing Corporation
2020-01-10 12:27:31
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International Journal of Advanced Geosciences; Vol. 8 No. 1 (2020)
eng
Copyright (c) 2020 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/13687
2021-02-19T14:17:47Z
IJAG:ART
"180728 2018 eng "
2311-7044
dc
Geospatial mapping and analysis of public health care facilities in OBIO/AKPOR LGA, rivers state, Nigeria
Menegbo, Emmanuel
Captain Elechi Amadi Polytechnic, Port Harcourt, Nigeria
Johnbusco C. Ojiako, Dr
2Department of Surveying and Geoinformatics, Nnamdi Azikiwe University, Awka, Nigeria
., .
., .
This work aims at geospatial mapping of healthcare facilities in Obio/Akpor LGA in Rivers State. The objectives are to acquire primary and secondary data sets within the study area, to create a functional spatial database on health facilities, and to perform various spatial and attrib-ute query that will aid the mapping of healthcare facilities. Primary data for healthcare facilities location was acquired with Global Positional Systems (GPS) receiver. Google earth Pro Satellite imagery was used. Secondary data was obtained from relevant government agency. ArcGIS 10 version software was used for data processing and analysis. Various spatial and attribute queries was formulated for geospatial mapping of healthcare facilities. The results show the distribution of health facilities within the study area on a digital map in form of maps and tabular data among others. Results obtained show that 10 healthcare facilities have least at 10000 populations. Four facilities were found to have no medical doctor. Two healthcare facilities were found to be located in ward 14. Fourteen healthcare facilities were found to have at least total of 10 personnel, the highest personnel per facilities and a total of 16 healthcare facilities were distributed all over the study area. A total of 37 settlements were distributed all over the study area. Over 21 settlements are left out of the service areas of 1km. PHC Ru-muokwuta and St Jude Hospital Rumuokoro have least healthcare personnel of 6 and 5 respectively. 10 healthcare facilities have at least 10000 populations to physician ratio standard recommended by World Health Organization (WHO). The creation of Geospatial health in-formation systems is useful in data collection and management of healthcare facilities within the study area and Nigeria in general.
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Science Publishing Corporation
2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/13742
2021-02-19T14:17:48Z
IJAG:ART
"180804 2018 eng "
2311-7044
dc
Assessment of toxic metal contamination with ecological risk of surface water and sediment of Korotoa River in Bangladesh
Proshad, Ram
Department of Soil Science, Patuakhali Science and Technology University, Bangladesh http://orcid.org/0000-0002-4878-9616
Saiful Islam, Md.
Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh
Kormoker, Tapos
WorldFish, Bangladesh
Emam Mehedi Masud, Md.
Department of Emergency Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh
Mohammad Ali, Mir.
Toxic metal contamination is a major problem globally, especially in developing countries. In this study, the levels of toxic metals such as Cr, Ni, Cu, As, Cd and Pb in surface water and sediment of Korotoa River of Bogra City, Bangladesh were investigated. The average concentration of Cr, Ni, Cu, As, Cd and Pb in studied sediment were 1.01, 0.89, 1.98, 6.02, 0.0054 and 0.469 mg/kg, respectively. In the water sample, the mean concentration of Cr, Ni, Cu, As, Cd and Pb were 1.13, 1.33, 3.02, 2.62, 0.75 and 0.81 mg/kg, respectively. A huge amount of municipal wastes, industrial effluents and agricultural runoff from the periphery of Bogra City notably are dumped to this river. Most of the effluents channeled into these rivers are not treated. Considering the sampling sites, the decreasing order of total metal concentration in water samples were Cu > As > Ni > Cr > Pb > Cd and in sediment were As > Cu > Cr> Ni > Pb > Cd. Total average concentrations of Cr, Ni, Cu, As, Cd and Pb in the water samples were higher than WHO guidelines for drinking water quality. This contamination level implied that the condition is much frightening and probably severely affecting the aquatic ecology of the river.
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2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/13762
2021-02-19T14:17:48Z
IJAG:ART
"180723 2018 eng "
2311-7044
dc
Geomechanical evaluation of reservoirs in the coastal swamp, Niger delta region of Nigeria
Akpan Harry, Thomas
Department of Geology, Akwa Ibom State University, Mkpat Enin
Edet Etuk, Sunday
Department of Physics, University of Uyo, Uyo
Namdie Joseph, Inyang
Department of Physics, University of Uyo, Uyo
Emeka Austin, Okoli
Department of Geology, Federal University of Technology, Owerri
Evaluation of elastic parameters of reservoirs can be used in geomechanical modelling, wellbore stability analysis, and sanding, which can be applied in practical situation to optimize drilling, completion and productions of wells. Petrophysical analysis was done to identify various reservoirs in two wells, using sonic, neutron, gamma, resistivity and density logs. Porosity, Lithology and Water/Hydrocarbon saturation were determined. The lithology are mostly sand, shale and sandstone with sand/sandstone been the main lithology found in the reservoirs. Porosities in the two wells decreases with depth except in few cases, due to over pressured zones, caused by fluid contents. The reservoirs identified in the two wells are of economic importance due to their net pay zone ranging from 7.16m to 225.25m, with 1067m to 3507m depth, which is within the Agbada formation, having a minimum an average hydrocarbon saturation of 50%. Elastic parameters evaluated are Vs, Vp, Vp/Vs, Poisson ratio, Shear Impedance, Acoustic Impedance, Bulk Modulus, Shear Modulus and Young Modulus. Vp/Vs and Poisson ratio was used to also infer and confirm the lithology gotten from gamma log and also used to discriminate between, oil sand, gas sand and brine sand. The Elastic properties of the reservoirs that are found mostly in the sandstone lithology varies between 15437.91 to 31522.28psi, 7.10 to 24.78Kbar, 5929.51 to 22339.26psi, 1.94 to 18.06Kbar, 1.70 to 2.31, 5.34 to 43.59psi of Acoustic Impedance, Bulk Modulus, Shear Impedance, Shear Modulus, Velocity ratio and Young Modulus respectively.
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2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/13773
2021-02-19T14:17:48Z
IJAG:ART
"180823 2018 eng "
2311-7044
dc
Screening of jute and kenaf varieties for salinity tolerance
isfatuzzaman Bhuyan, Md.
Patuakhali Science and Technology University
M. Mehadi Hassan, K
Jahan Lipi, Nowrose
Rafiq Uddin, Md
Monirul Islam, Md
Ferdous, Mahbuba
Hasan Antor, Nazmul
Das, Parna
A study was conducted in the Department of Agronomy, Bangladesh Agricultural University (BAU), Mymensingh from April to August 2012 to examine the salinity tolerance of eight jute varieties (CVE-3, C-83, CVL-1, BJC-7370, O-795, O-9897, OM-1, O-72) and two kenaf varieties (HC-95 and HC-2). Initially germination of these varieties were evaluated under six salinity levels viz. 0mM, 20mM, 40mM, 60mM, 80mM, and 100mM NaCl in the seed laboratory of the Department of Agronomy. Afterwards, all the varieties was grown in pots in the net house under four salinity levels viz. 0mM, 25mM, 50mM, and 75mM. The results from the germination study revealed that under control condition (0mM NaCl) all the jute varieties showed germination more than 80% both at 7 and at 14 days after seed sowing, whereas kenaf varieties had germination a little less than 80%. Among the jute varieties, O-72 showed the highest germination (92%), which was statistically similar with those of OM-1(91%), O-795 (90%), and C-83(87%). Salinity stress decreased germination drastically in all of the jute and kenaf varieties. A salinity level of 100mM caused the highest germination inhibition (74.70%) in jute variety CVL-1, which was very close to those of BJC-7370 and O-72. On the other hand, the lowest germination inhibition (51.11%) was recorded in jute variety O-795. The results of the pot trail showed that the plant characters of jute and kenaf varieties were affected significantly by salinity stress. All the varieties produced their respective plant height, number of leaves per plant, and plant dry weight under control condition (no salinity). Among these varieties, CVE-3 produced the highest plant height (145.2cm), and total dry weight (22.55g), whereas O-72 produced the highest number of leaves per plant (24.67). All these plant characters decreased sharply due to salinity stress irrespective of variety. However, the rate of decrease of plant characters occurred differentially in the jute and kenaf varieties. The highest rate of decrease in number of leaves (74.22%) was found from the variety CVE-3, whereas the lowest one was recorded from the variety HC-2 (51.68%). Salinity stress caused the highest decrease in total plant dry weight (73.68%) in the variety CVL-1 and plant height (73.64%) also in the variety CVL-1. On the contrary, the lowest decrease in plant dry weight (50.99%) was found in the variety O-9897 and plant height also in variety O-9897 (50.88%). Based on the results from germination test and pot trail, it can be inferred that jute variety O-9897 appeared to be the most salt tolerant followed by O-795, HC-2, HC-95, CVE-3, O-72, C-83, BJC-7370, OM-1, and CVL-1.
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Science Publishing Corporation
2018-06-29 17:44:22
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http://www.sciencepubco.com/index.php/IJAG/article/view/13773
International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/14150
2021-02-19T14:17:48Z
IJAG:ART
"180728 2018 eng "
2311-7044
dc
Data mining techniques for rainfall prediction in the Tepi region of Ethiopia
Sivanesan, D
MIZAN TEPI UNIVERSITYETHIOPIA
Javed Idrisi, M.
MIZAN TEPI UNIVERSITY
Agriculture depends mainly on the rainfall especially in countries like Ethiopia (Africa) as irrigation system is not much in practice. One of the main reasons is because of its natural topography. Though there are many factors that affect the agricultural yield, it is appropriate to consider the main factor rainfall that decides about the food production. The prediction of the rainfall can be done by using different techniques like regression analysis, clustering, artificial neural network (ANN) and fuzzy logic. Therefore, the significance of this research is essential for the Tepi region in the south west part of Ethiopia (SNNPR) where agriculture is the main occupation of the people living here. This research is first of its kind conducted in this region, and this paper shows the result related with the rainfall prediction by using LR – Linear Regression technique for the early prediction of the next consecutive three (3) years based on the previous available rainfall data.
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2018-06-29 17:44:22
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International Journal of Advanced Geosciences; Vol. 6 No. 2 (2018)
eng
Copyright (c) 2018 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/16539
2021-02-19T14:17:48Z
IJAG:ART
"190527 2019 eng "
2311-7044
dc
Evaluation of groundwater supply potential from hydraulic parameters estimated from vertical electrical sounding (VES) in Ikeduru, south east Nigeria
Jacinta Chiemela, Nwosu
Micheal Okpara University of Agriculture, Umudike
I Nwosu, Leonard
University of Portharcourt, Choba
O Chukwu, Godwin
Micheal Okpara University of Agriculture, Umudike
A Vertical Electrical resistivity Sounding (VES) survey was carried out, to study the groundwater supply potential, protective capacity and soil corrosivity of aquifers in Ikeduru Local Government Area of Imo state, Nigeria. A total of ten (10) geoelectric soundings were acquired. Schlumberger electrode configuration was used in acquiring the data. Six to seven geoelectric layers were delineated from the interpreted results, the Aquifers were delineated between the fifth and sixth geoelectric layers, having an apparent resistivity above 1000Ωm, with the highest thick of 69.0m at a depth of 144.0m. Longitudinal Conductance, Hydraulic Conductivity, Transmissivity and Product Conductance range are as followings for the aquifers; 1.720 – 127.000 x 10-3Ω-1, 15.90 – 188.79m/day, 1093.3 – 1097.1m2/day and 2.590 – 252.50 x 10-3 respectively. Inferring from our hydraulic parameters, all the aquiferous zones have very high designation, wwithdrawal of great regional importance of groundwater supply potential and practically noncorrosive, soil corrosivity. 40% percentage of the aquiferous units have very good protective capacity, while for excellent and good protective capacity of the study are is 30%. All the VES points are said to be a very viable potential for safe source for groundwater exploration.
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2019-05-04 09:30:05
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International Journal of Advanced Geosciences; Vol. 7 No. 1 (2019)
eng
Copyright (c) 2019 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/18372
2021-02-19T14:17:48Z
IJAG:ART
"190505 2019 eng "
2311-7044
dc
Effect of dolomite amendment of acid Andosols on the performance of two green beans varieties in the Cameroon Western Highlands
Tamfuh P, Azinwi
Department of Soil Science, Faculty of Agronomy and Agricultural Sciences, University of Dschang, Cameroon
Pangop CR, Kamga
Department of soil science, Faculty of Agronomy and Agricultural Sciences, University of Dschang, P.O Box 222, Dschang, Cameroon; Department of Mining and Mineral Engineering, National Higher Polytechnic Institute, University of Bamenda, P.O Box 39, Bambili, Cameroon
Tapindje DG, Douanla
POLEG, SA Foumbot
A, Boukong
Department of Soil Science, Faculty of Agronomy and Agricultural Sciences, University of D
FO, Tabi
Department of Soil Science, Faculty of Agronomy and Agricultural Sciences, University of Dschang, Cameroon
F, Cho-Ngwa
Department of Mining and Mineral Engineering, National Higher Polytechnic Institute, University of Bamenda, P.O Box 39, Bambili, Cameroon
D, Bitom
Department of Soil Science, Faculty of Agronomy and Agricultural Sciences, University of Dschang, Cameroon
Soil acidity is a major factor limiting green beans (Phaseolus vulgaris L.) production in the Cameroon western Highland. A field experiment (split-plot layout) was conducted with seven dolomite treatments (tons ha-1): control or T0 (0), T1 (0.5), T2 (1), T3 (1.5), T4 (2), T5 (2.5) and T6 (3). Soil physico-chemical properties were determined meanwhile growth and yield parameters were collected weekly for a month and analyzed statistically. Results revealed that control soils were texturally silty sandy. The exchangeable bases (except Na), cation exchange capacity (CEC), base saturation and available phosphorus were very high. They acidity was moderate to high (5.2 to 5.6) while organic matter was very high (% dry mass) and of moderate to good quality (11<C/N ratio<13). Crop variety showed a highly significant difference (P<0.001) for all growth and yield parameters, with Cogito producing the longest (13.88 cm), most numerous (40.94 pods per plant) and highest (16.96 tons ha-1) extrafine pods. Dolomite doses revealed no significant effects (P>0.05) on crop parameters, although highest yield (13.61 tons ha-1) of extrafine pods came from 2 tons ha-1. The dolomite dose versus variety interaction showed no significant difference (P>0.05). Farmers ought to improve soils with compost and cover crops to check nutrient leaching and erosion.
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2019-05-04 09:30:05
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International Journal of Advanced Geosciences; Vol. 7 No. 1 (2019)
eng
Copyright (c) 2019 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/19712
2021-02-19T14:17:49Z
IJAG:ART
"190505 2019 eng "
2311-7044
dc
Sedimentary environments and lithofacies distribution of zeit formation, red sea- Sudan
H.M.A.Eltayib, Sadam
Assistant Prof.
M. Abdelrahman, El Sheikh.
S. M. Ibrahim, Ali.
A. O. Al-Imam, Omar
The Sudanese red sea coastal plain is geologically characterized by Cenozoic siliciclastic and shallow marine rift related sedimentary se-quences. Pliocene-Pleistocene is represented by the thick older gravel unit and the emergent linear reef terraces. In this study, wire line logs besides the investigations of cutting samples were used to investigate the un cored facies successions, to detect changes in grain size distribution, lithology and sedimentary facies and hence to interpret depositional environment. Confirmation of the log behavior using the cores and the cutting samples was undertaken. Furthermore, core to gamma-ray and spontaneous potential log correlations were set up. The lithofacies association and the depositional patterns of Zeit Formation were controlled by allocyclic and autocyclic processes, which include tectonic, palaeo climatic as well as depositional mechanisms. The lithofacies Distribution of Lower Zeit Member shows the southwestern part of the area is dominated by terrestrial to marginal marine partly supra tidal domain where some channel feeders can support the sand distribution from south to north. The central part of the area is dominated by shallow marginal marine to partly supra-tidal domains. The Middle Zeit Member was dominated by marginal marine to supratidal domain. The Upper Zeit Member repeated pattern of facies distribution being similar to that of Middle Zeit, however the sandy facies influxes increased towards the S. Suakin, Digna- area, towards Bashayer area and Durwara area from south to north.
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2019-05-04 09:30:05
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International Journal of Advanced Geosciences; Vol. 7 No. 1 (2019)
eng
Copyright (c) 2019 International Journal of Advanced Geosciences
oai:ojs.pkp.sfu.ca:article/20308
2021-02-19T14:17:49Z
IJAG:ART
"190505 2019 eng "
2311-7044
dc
Temporal monitoring of Ghamu bar glacial lakes using remote sensing and GIS
Hussain, Alamgeer
Secretariat of Agriculture, Livestock and FisheriesDepartment, Gilgit Baltistan, Pakistan
Bano, Dilshad
PMAS-Arid Agriculture University Rawalpindi
The trends of glacial lakes formation and glacial lake outburst flooding events have been increased across Himalayan Karakorum Hindu Kush (HKH) ranges during last decade due to increase in global warming. This research is addressing the temporal monitoring of ghamu bar glacial lakes using remote sensing and GIS. Landsat images of 1990, 2000, 2010 and 2015 were used to map temporal glacial lakes using normalized difference water index (NDWI) index. The results of normalized difference water index were validated through modified normalized difference water index and field photographs. Temporal variability shows that, glacier lake area has been increase from 1990 to 2015. In 1990 total area of lake was 0.052 sq, which further increased 0.0423 in 1995 than it decreases to 0.314 in 2000 due to detached of debris cover moraine from glacier tongue and it reach 0.0846 sq.km in 2005. The area gradually increased up to 0.1296 sq.km in 2010 and it goes up to 0.157 sq.km 2015. The overall increase in area are expanding at an accelerated rate in past two decades, indicating that Darkut glacier is more vulnerable toward climate change through increase in size and volume ofghamu bar glacial lakes. There is need for vigilance in monitoring of ghamu bar glacial lake through high resolution remote sensing data and development of Geo-database enabling more details about past and future lakes behaviors toward climate change impacts.
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Science Publishing Corporation
2019-05-04 09:30:05
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International Journal of Advanced Geosciences; Vol. 7 No. 1 (2019)
eng
Copyright (c) 2019 International Journal of Advanced Geosciences
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