Geoelectrical Characterization of Aquifer Precincts in Parts of Lapai, North Central Nigeria

Journal of Applied Sciences and Environmental Management

TSEPAV, M.T.¹  BAYEGUN, F.A.¹  IBRAHIM, S.I.¹ 

关键词: Conductance;    transmissivity;    protective capacity;    aquifer characterisation;   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

Some geoelectric characteristics of aquifer in parts of Lapai, Central Nigeriawere evaluated using Wenner vertical electrical sounding (VES) method. Fifteen (15) VESpoints were occupied using G41 Geotron Resistivity meter with electrode spacing varyingfrom 10m to 150m while a global positioning system (GPS) tracking device was used tolocate the VES points. The 1xD Interprex interpretation software was used for the datainterpretation which revealed four layers comprising the top lateritic soil, silty /clayey,weathered basement and fresh basement rocks. The resistivity of these layers varied from4.54Ωm to 27987.60Ωm while the depth varied from 0.440m to 1079.5m. Longitudinalconductance and transverse resistance calculated from the layersf thicknesses and resistivitiesvaried from 0.00039Siemens to 2.05Siemens and 3.96×106Ωm2 to 3.34×107Ωm2 respectively.The aquifer overburden protection capacity in VES 2, 5, 6,9,10 and 11 were relatively lowwhich means the aquifer in these locations are susceptible to contaminants while in VES 15the protective capacity is higher indicating that the aquifer is protected. Generally, all thelocations could be exploited for groundwater at relatively reasonable depths. However, agreater part of the study area has low protective capacity (

【 授权许可】

Unknown