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In:
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Publication Date:
2023-08-02
Description:
The dynamic behavior of saline water intrusion along coastal areas affects groundwater resources adversely. For the assessment of such problems, the present study deals with time-lapse electrical resistivity monitoring. The study observed changes in subsurface resistivity with time constraints to locate the saline zones in aquifers. Resistivity data was collected using Dipole-Dipole and Wenner-Schlumberger arrays for getting optimum resolution. The damping factor was chosen for the time-lapse inversion algorithm according to the noise present in field data. 2D images of subsurface conditions were interpreted according to the percentage variation in resistivity values. It was observed that saline clay layers were present in multiple depths ~12m and 39m below ground level. Further, different attributes can be retrieved from the time-lapse inversion results as desaturation percentage and resistivity ratio, which can give a brief idea about the movement of contaminants inside the subsurface.
Language:
English
Type:
info:eu-repo/semantics/conferenceObject
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