TITLE:
Electrical Resistivity Survey for Predicting Aquifer at Onicha-Ugbo, Delta State, Nigeria
AUTHORS:
Ruth E. Iserhien-Emekeme
KEYWORDS:
Geoelectric, Aquifer, Resistivity, Vertical Electrical Sounding (VES)
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.2 No.7,
June
13,
2014
ABSTRACT: A geoelectric
survey employing the vertical electrical sounding (VES) was carried out in
parts of Onicha-Ugbo in Aniocha North Local Government Area of Delta State
using Abem Terrameter SAS 300C together with SAS 2000 booster. The study was
carried out with the aim of delineating the subsurface geologic sequence
present in the study area, determining their geoelectrical parameters (layer
thicknesses and resistivities), and delineating the structural and
geomorphological features present beneath the subsurface. The results of the
survey suggest that the subsurface comprises of 5 - 6 layers and that clay and silt content varies
vertically and horizontally, thus influencing the apparent resistivity of the
area. The geoelectric section developed shows that the subsurface units are
dominantly sandy underlying loamy sandy topsoil which is relatively dry. The
depth to water table from the sites is above 150 m and suggests that
groundwater exploration is encouraging.