Applied Geophysics
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Applied Geophysics
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Item GEOELECTRICAL INVESTIGATION FOR GROUNDWATER AT DAY SECONDARY SCHOOL, KAMPALA, MINNA, NIGER STATE, NIGERIA(Nigerian Journal of Physics 2018, 2018) ADETONA, Adebayo Abbass, Damidami LukaGeoelectrical investigation of groundwater has been carried out at Day Secondary School, Kampala, Minna, Niger state, Nigeria. The area is situated on Latitude 9⁰40'37.11'' to 9⁰41'37.1''N and longitude 6⁰29'52.64'' to 6⁰30'51.56'' E. The survey was carried out with the aim of delineating the potential area for groundwater development and locating possible and suitable sites for productive boreholes, via overburden thickness and depth to the groundwater within the study area. A total of 500 m x 500 m was covered with VES points at 100 m interval and inter profile space of 100 m giving a total of thirty six (36) VES points. The schlumberger configuration was used for data collection with half-current electrode (AB/2) ranging from 1 to 100 m. WinResist computer software package was used to produce the VES curves. The quantitative interpretation of the VES curves made use of curve matching and computer aided approach. The depth sounding interpretation results were used to generate geoelectric section. The corresponding geologic section were also generated which revealed the existence of three subsurface layers. These layers comprises the topsoil, weathered/fractured basement and fresh basement The depth to basement map was also produced to further indicate depth to basement from the ground surface with VES A2, B5, D2 and E1 to be relatively deeper with depth values range between 25 to 35 m while the shallower region of the area has a depth range values between 10 to 20 m. Hence, VES A2, A5, B4, B5, C2, C4, D4, D5, E1, E3, and F4 are high conductive zone which are prolific for ground water potential. The depth range of the aquifer potential zones is between 22.7 m to 50.4 m. Correlations of the geologic sections extracted from the geoelectric section with the interpreted nearby borehole log were in agreement.Item Geoelectrical Investigation of Groundwater Potential, at Bosso Campus, Minna, Niger State, Nigeria(Science Publoshing Group, 2019) ADETONA, Adebayo AbbassAbstract: Geoelectrical investigation of groundwater potential has been carried out at Bosso Staff Quarters Bosso campus, Federal university of Technology, Minna. The area is situated on latitude 90 38’55.8”N and 90 39’29.0”N and longitude 6031’19.7”E and 6031’46.7”E. the survey was carried out with the aim of delineating the potential area for groundwater development and depth to the groundwater within the study area. The Schlumbeger array was used to sound six profiles with a total of 36 Vertical Electrical Sounding (VES) points. The sounding interpretation results were used to generate geoelectric section. The orresponding geologic section were also generated which revealed the existence of three subsurface layers. These layers revealed the existence of three subsurface layers. These layers comprise the top soil, weathered/fractured basement and fresh basement. The results of this analysis are presented as curves of apparent resistivity versus depth, from the digitalized curves obtained from the IP2WIN software, sulfur 11 was used to generates iso-resistivity map at different depth. The analysis of results shows that the area is not appropriate for borehole drilling.