Evans UF Author

Research Article Subscription

Geoelectrical Assessment of the Impact of Indiscriminate In-Stream Sand Mining on Hydrological System of Coastal Aquifers in Oron Local Government Area, Akwa Ibom State, Nigeria

Author(s):

Evans UF, Okiwelu AA, Udoinyang EP

Geoelectrical measurement using Schlumberger electrodes array was conducted to assess the impact in-stream sand mining on hydrological system of coastal aquifers. A total of 15 VES was carried out and results were interpreted using manual curve plotting and computer software. The VES results as well as the fluctuations in groundwater level for mining and non-mining sites were compared. The variation of in-situ resistivity of geounit shows that mining sites produced mostly AK and K curve types with comparatively higher values (1042-12827 Ωm). This was contrary to the HQ and H curves with relatively lower resistivity values (162-4736 Ωm) obtained for geolayer of non-mining sites. HQ and H curve types with the associated low resistivity values, complemented with observed
... view more»

Abstract HTML PDF