Assessing the suitable electrical resistivity arrays for characterization of basement aquifers using numerical modeling.

Numerical modeling analysis was used to assess the suitable electrical resistivity arrays for the characterization of geological structures, including dyke, horst, graben, sub-vertical, and vertical structures. These geological structures usually make up the aquifers interested in the hydrogeological evaluation of crystalline basement terrains. Six electrode configurations, including Wenner alpha (α), Wenner beta (β), Wenner gamma (γ), Schlumberger array, dipole-dipole array, and pole-dipole array, were used to assess the geological structures for groundwater exploration.

Geoelectrical assessment of polluted zone by sewage effluent in University of Ibadan campus southwestern Nigeria.

Sewage effluent was discharged through leaking sewer into the agricultural training farms, University of Ibadan which is used for cultivation of vegetables and cereals, thus constituting threat to human health. This study examined the reliability of the electrical resistivity technique in delineating sewage polluted zones and possible pathways into the groundwater network. The area investigated is underlain by banded gneisses.