Okoro, E.I., Egboka, B.C. E. and Onwuemesi, A.G. (2010) Evaluation of the Aquifer Characteristic of Nanka Sands Using Hydrogeological Method in Combination with Vertical Electrical Sounding (VES). Journal of Applied Sciences and Environmental Management, 14, 5-9.
https://doi.org/10.4314/jasem.v14i2.57822

has been cited by the following article:

• TITLE: Geophysical Investigation of Groundwater Potentials of the Nanka Sand in Obosi and Its Environs, Anambra State Nigeria

  AUTHORS: Nelson Onyebuchi Nwobi, Solomon Ekene Okeke, Chekwube Nnamdi Didi, Augustine Obiora Okpara

  KEYWORDS: Geophysical Investigation, Groundwater, Electrical Resistivity, Nanka Sand

  JOURNAL NAME: Journal of Water Resource and Protection, Vol.14 No.10, October 28, 2022

  ABSTRACT: Geophysical investigation for Groundwater which entails the use of vertical electrical sounding (VES) methods was carried out in parts of the Idemili area of Anambra State, Nigeria. Geologically the study area falls within the Nanka Sand, belonging to the Ameki Group in the Tertiary Niger Delta Basin. The investigation intends amongst others to assess the groundwater potential of the area, find out the existence of possible aquifer(s) within the area, and estimate the possible depth of a borehole. 15 VES stations were established at the site using Ohmega System Tetrameter and Schlumberger electrode configuration with current electrode spacing (AB/2) of 350 meters. The geologic parameters, such as the number of geo-electric layers, the thickness of the geo-electric units, and their resistivities were interpreted from the VES curves. A qualitative assessment of the curves shows that a model with 5 layers would sufficiently model the field curves. The thickness value ranged from 0.1 to 86 m, the resistivity ranged from 258 to 13,258 Ωm, and the depth ranged between 1.2 and 109 m. Quantitative interpretation of field curves involved inversion with appropriate parameters using Zond Res1D software.