|
Journal of Environmental Hydrology
ISSN 1058-3912 |
||
|
Electronic Journal of the International Association for
Environmental Hydrology
JEH Volume 19 (2011), Paper 19 Posted September 28, 2011 EVALUATION OF AQUIFER CONTAMINATION USING 2D GEOELECTRIC IMAGING AT IKEJA, LAGOS, NIGERIA
E.A. Atakpo1 2Department of Geology, Delta State University, Abraka, Nigeria 3Department of Earth Sciences, University of Lagos, Akoka, Nigeria ABSTRACT Geophysical investigation has been conducted using the Electrical Resistivity Lund Imaging System (2D) in the Ikeja area of Lagos, Nigeria with the aim of investigating the aerial and vertical extent of contamination of the shallow water bearing aquifer by effluent discharged from industries in the area. Survey profiles were conducted in order to map the contaminated zones. The survey was performed with a multi channel (64) ABEM SAS 4000 Terrameter. The resistivity inversion data and borehole lithologic logs were used to infer the lithology of the near surface layers in the study area as topsoil, clay, clayey sand and sand. The inversion results from the 2D Resistivity data revealed areas of low resistivity values (<5 Ωm) indicative of possible contamination of the first aquifer and possibly the second aquifer horizons. Reference: Atakpo, E.A., A. Akpoborie, and E. Ayolabi. 2011. Evaluation of aquifer contamination using 2D geoelectric imaging at Ikeja, Lagos, Nigeria. Journal of Environmental Hydrology, Vol. 19, Paper 19. CONTACT: E.A. Atakpo Deparment of Physics Delta State University Abraka, Nigeria E-mail: e_atakpo@yahoo.com |
||
|
Return to JEH 2011 Papers
Return to HydroWeb Homepage |
||