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The Very Low Frequency-Electromagnetic (VLF-EM) geophysical methods have been used to map selected settlements in Kwara State Polytechnic (Permanent Site) and its environs, Ilorin, Northcentral Nigeria with a view to determine the groundwater potential of the area. A total of thirteen (13) profiles were covered during VLF data collection with 20m sample interval along each profile with spread length of between 100m. The VLF data were collected using ABEM WADI instrument. The data were interpreted using KHFFILT software. The qualitative interpretation of the acquired VLF-EM data identified areas of hydro-geologic importance. The results further showed that the EM anomalies vary greatly. Some of the anomaly peaks are narrow and sharp while others are broad with varying width extent. The values of the filtered real range from -0.9 to 22.5 across the study area. The study area is adjudged, based on the VLF data interpretation which indicates the presence of interconnected fracture zones, to have potentially good prospects for groundwater development; while recommendation is made for further geophysical methods to be employed in order to detect suitable locations for productive and sustainable borehole.
Sunday, J.A.. 2019. \u201cDetection of Fracture Zones for Groundwater Investigation from Interpretation of VLF-EM Anomalies of Kwara State Polytechnic Ilorin and its Environs\u201d. Global Journal of Human-Social Science - B: Geography, Environmental Science & Disaster Management GJHSS-B Volume 19 (GJHSS Volume 19 Issue B1): .
Crossref Journal DOI 10.17406/GJHSS
Print ISSN 0975-587X
e-ISSN 2249-460X
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Total Score: 108
Country: Nigeria
Subject: Global Journal of Human-Social Science - B: Geography, Environmental Science & Disaster Management
Authors: Sunday, J.A., Usman, A., Ologe, O., Lawal, T.O. (PhD/Dr. count: 0)
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Publish Date: 2019 05, Sat
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The Very Low Frequency-Electromagnetic (VLF-EM) geophysical methods have been used to map selected settlements in Kwara State Polytechnic (Permanent Site) and its environs, Ilorin, Northcentral Nigeria with a view to determine the groundwater potential of the area. A total of thirteen (13) profiles were covered during VLF data collection with 20m sample interval along each profile with spread length of between 100m. The VLF data were collected using ABEM WADI instrument. The data were interpreted using KHFFILT software. The qualitative interpretation of the acquired VLF-EM data identified areas of hydro-geologic importance. The results further showed that the EM anomalies vary greatly. Some of the anomaly peaks are narrow and sharp while others are broad with varying width extent. The values of the filtered real range from -0.9 to 22.5 across the study area. The study area is adjudged, based on the VLF data interpretation which indicates the presence of interconnected fracture zones, to have potentially good prospects for groundwater development; while recommendation is made for further geophysical methods to be employed in order to detect suitable locations for productive and sustainable borehole.
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