GEOELECTRIC SOUNDINGS FOR THE DETERMINATION OF AQUIFER CHARACTERISTICS IN ANJAGWA, NASARAWA STATE NIGERIA

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Date

208-09-28

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Department of Physics, Nasarawa State University Keffi

Abstract

A total of fifteen (15) Schlumberger Vertical Electrical Soundings (VES) were carried out in Anjagwa area of Nasarawa State, Nigeria, using a maximum current electrode separation of 500 m. The data were interpreted using a conventional partial curve-matching method to obtain initial model parameters, which were used in a computer program IXID to obtain final parameters. Aquifer parameters of longitudinal conductance and transmissivity were obtained using Dar-Zarouk parameters. The results of interpretation revealed four to five geoelectric layers. High transmissivity values are recorded at VES 3, 4, and 5 with high thicknesses, which imply that thick aquifer materials have higher transmissivity values than areas underlain by relatively thin aquifer materials. Such result is expected because transmissivity is a function of aquifer thickness.

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Keywords

Anjagwa, aquifer, geoelectric, isoresistivity, Schlumberger vertical electrical soundings, transmissivity

Citation

Jatau BS, Fadele SI & Agelaga AG 2013. Groundwater investigation in parts of Kaduna South and environsusing Wenner offset method of electrical resistivity sounding. J. Earth Sci. and Geotechn. Engr., 3(1): 41-54. Jatau BS & Baba A 2014. Water resources of Kubanni and other drainage basins around Ahmadu Bello University, Zaria, Kaduna State, Nigeria. World J. Earth Sci. and Engr.. 1(1): 1-3. Keller GV & Frischknecht FC 1966. Electrical Methods in Geophysical Prospecting, Pergamon Press, Oxford. Kelly EW 1997. Geoelectric Sounding for estimating aquifer hydraulic conductivity. Groundwater, (15): 420-424. Mbonu PDC, Ebeniro JO , Ofoegbu CO & Ekine AS 1991. Geoelectric sounding for the determination of Aquifer characteristics in parts of the Umahia area of Nigeria. Geophysics, 56(2): 284-291.

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https://keffi.nsuk.edu.ng/handle/20.500.14448/5996

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