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Title: | Groundwater exploration using 1D and 2D electrical resistivity methods |
Authors: | Sikah, Jonas N. Aning, Akwasi Acheampong Danuor, Sylvester K. Manu, Evans Okrah, Collins |
Keywords: | Electrical resistivity tomography vertical electrical sounding groundwater aquifer geological layer hydrogeology |
Issue Date: | 2016 |
Publisher: | Journal of Environment and Earth Science |
Abstract: | Integrated geophysical techniques involving 2D electrical resistivity imaging (ERI) and vertical electrical
sounding (VES) were used to delineate groundwater potential zones for borehole siting in the Pru District of the
Brong Ahafo Region of Ghana. The ABEM Terrameter LS was employed in the survey. A total of fifteen (15)
400 m - ERT profiles and thirty-one (31) VES points were investigated using the Schlumberger protocol. The
Res1DINV and Res2DINV inversion software were used for data analysis. The 2D ERI images showed a lot of
fractures within the subsurface of the study area. The results of the VES generally revealed either three or four
subsurface geological layers at the selected points. The second and third layers were found to possess relatively
low-to-moderate resistivity values indicative of potential aquifer zones. The resistivity of the fourth layer
indicated the presence of slightly-fractured to fresh bedrock. The borehole logs depict four sequences: brownish
or lateritic sandy clay overlying highly weathered sandstone which is underlain by moderately weathered
sandstone and highly fractured sandstone basement. |
Description: | An article published by Journal of Environment and Earth Science |
URI: | http://hdl.handle.net/123456789/12645 |
Appears in Collections: | College of Science
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