DETECTION OF FRACTURED AQUIFER USING COMBINATION OF RESISTIVITY AND INDUCED POLARIZATION ANALYSIS
DOI:
https://doi.org/10.11113/jt.v76.5962Keywords:
Electrical resistivity, induced polarization, fractured aquiferAbstract
Subsurface geological formation is essential in investigating the groundwater occurrence. The formation can be determined from subsurface resistivity value through electrical survey. However, there is ambiguity in interpreting the subsurface resistivity. Therefore the purpose of this study is to delineate the subsurface geological formation through combination of resistivity and induced polarization analysis. The type of geological formation is determined from resistivity analysis and well lithology. Meanwhile the fracture, water in clayey soil and groundwater occurrence is identified through combination of resistivity and induced polarization analysis.  It has been identified that the study areas consist of fractured aquifer. Possible groundwater fractured area can be indicated by low resistivity ranged from 700 to 2000 Ωm and overlapped with low chargeability ranged from 1 msec to 2 msec. This study provides useful information on nature of groundwater occurrence especially fractured aquifer.
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