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

Kehinde D Oyeyemi, Ahzegbobor P Aizebeokhai, Mohamed Metwaly, Oluseun Omobulejo, Oluseun A Sanuade, Emmanuel E Okon

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Article in Heliyon, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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2citing papers in PubMed

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6 authors.

Kehinde D OyeyemiApplied Geophysics Unit, Department of Physics, Covenant University, Nigeria.

Ahzegbobor P AizebeokhaiApplied Geophysics Unit, Department of Physics, Covenant University, Nigeria.

Mohamed MetwalyDepartment of Archaeology, College of Tourism and Archaeology, King Saud University, Saudi Arabia.

Oluseun OmobulejoApplied Geophysics Unit, Department of Physics, Covenant University, Nigeria.

Oluseun A SanuadeBoone Pickens School of Geology, Oklahoma State University, Stillwater, United States.

Emmanuel E OkonDepartment of Geology, University of Calabar, Nigeria.

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No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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. The synthetic models of the geological structures were generated using RES2DMOD code, and 5% noise was added to all the models. The generated models were inverted using the RES2DINV code. The results show that the most suitable arrays for dyke and graben structures are Wenner alpha, while Wenner beta is the most suitable for the horst structure. The Schlumberger array was the best for both sub-vertical and vertical structures. This study has demonstrated the efficacy of numerical modeling in assessing the best resistivity arrays for 2D electrical resistivity imaging for groundwater exploration prior to geophysical field investigation.

Indexed as

Basement aquifersElectrical resistivity imagingGroundwater explorationHydrogeologyNumerical modeling

Identifiers

PMID35607494

DOI10.1016/j.heliyon.2022.e09427

PMCPMC9123229

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