Volume 2, Issue 4, July - December, 2025

Application of geophysical in evaluation of aquifer potential and vulnerability at Ughelli and its environs, delta sate Nigeria

Umayah Otitie Star^1♦, Merrious Oviri Ofimola¹, Emmanuel Chukwuemeka Okolie¹

¹Department of Physics, Faculty of Science, Abraka, Delta State University, Abraka, Nigeria

^♦Corresponding Author
Department of Physics, Faculty of Science, Abraka, Delta State University, Abraka, Nigeria

ABSTRACT

In the Niger Delta region of Nigeria, specifically in Ughelli and its surrounding areas, the VES geophysical method was employed to investigate groundwater potential and aquifer vulnerability. The Schlumberger array, utilized for the conduction of Vertical Electrical Sounding (VES), facilitated the selection of ten specific VES locations. The maximum spacing of the current electrodes (AB/2) reached 100 meters while utilizing the ABEM Terrameter SAS 1000. Data interpretation was carried out using IX1D software, which incorporated a partial curve matching technique alongside a computer iteration method. The analysis of the estimated parameters revealed ranges for longitudinal conductance (S) between 9 and 379.09, transverse unit resistance (Tr) between 2.79Ω/m² and 5344.14Ω/m², longitudinal resistance (ρL) from 1.88 Ω-m to 544.8 Ω-m, and transverse resistance values ranging from 2 to 538.74. The investigation identified the existence of four to five distinct layers of curve types, with curve HK and HKA being the predominant types. Analysis of the VES layers indicated a range of four to five layers. Furthermore, the findings from the Tr values demonstrated that the area surrounding VES 9 exhibited greater groundwater potential in comparison to other regions within the study area.

Keywords: Resistivity, Depth, Thickness, Curve type

Discovery Nature, 2025, 2(4), e7dn3109

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DOI: https://doi.org/10.54905/disssi.v2i4.e7dn3109

Published: 12 July 2025