Umudike Journal of Engineering and Technology

Michael Okpara University of Agriculture, Umudike


GEOELECTRIC SOUNDING FOR DELINEATING GROUNDWATER AND ENVIRONMENTAL ASSESSMENT OF SITES IN IKOT EKPENE

Ijeh, B. I.
Department of Physics, Michael Okpara University of Agriculture, Umudike, Abia State

Umoh, E.
Department of Physics, Michael Okpara University of Agriculture, Umudike, Abia State

Anyadiegwu, F. C.
Department of Physics, Michael Okpara University of Agriculture, Umudike, Abia State



ABSTRACT

This study characterized aquifer and assessed dump sites in Ikot Ekpene, South East Nigeria, located between latitudes 5010’N and 5014’N and longitudes 7040’E and 7045’E. The study delineated the groundwater potential of the study area using geophysical techniques. The survey procedure adopted for field data acquisition is the Vertical Electrical Sounding (VES) and the Electrical Resistivity Tomography (ERT) imaging with the aid of a signal stacking resistivity meter (SSR-MP-ATS). The Schlumberger configuration was used to acquire VES data at nine (9) points and 3 sets of ERT images were obtained using Wenner configuration. The  VES results show that the topsoil  had resistivity  values  ranging  from  22.5  to  51.3Ωm  and  layer  thickness  that also range from  0.6  to  1.3m.  The range of the resistivity of the second and third layer is 11.3 to 1001.8Ωm with a thickness of 0.6 to 8.2m. The third to fifth geoelectric layers were delineated. The last layer in the VES indicates sand of resistivity between 725.6 - 2408.7Ωm. It was concluded that an elongated leachate contaminant from the dump sites may constitute future environmental threats.



Keywords: Electrical resistivity, Aquifer depiction, geo-electric layers, environmental assessment


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Published
Tuesday, June 26, 2018

Issue
Vol. 4 No. 1, JUNE 2018

Article Section
GENERAL

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