- 期刊
- OpenAccess
Geoelectric Investigation of Groundwater Resources in Parts of Bayelsa State, Nigeria
並列摘要
Ten Schlumberger Vertical Electrical Soundings (VES) were carried out in parts of Bayelsa State, Nigeria to investigate the subsurface layering with the aim of determining the configuration of the aquifer in the area and thus provide a systematic scientific basis for the sitting of prolific abstraction water boreholes using a maximum current electrode separation of about 400-500 m. The data obtained was interpreted by computer iterative modeling using Interpex 1D U.S.A. The most prominent type curve is the H making up the type curve combinations. The results of the study show a laterally and vertically varying succession of high and low resistive geoelectric layers through out the whole area. This indicates sandy formation with intercalations of clay bodies which is typical of the complex depositional environment of the area. Four to five geoelectric layers were identified and layer four is the aquiferous horizon with resistivity values ranging between 12.7 - 2747 Sm. The thickness of this layer ranges between 4.5-113.9 m and consists of fine to medium grained sand. Aquifers occur at different depths and they all have a rather irregular distribution and thickness. A value of 9.07 m/day was obtained as a mean hydraulic conductance for the area.
延伸閱讀
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