alexa GIS integration of remote sensing and electrical sounding data for hydrogeological exploration
Environmental Sciences

Environmental Sciences

International Journal of Waste Resources

Author(s): Shamsuddin Shahid, Sankar Kumar Nath

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Interpretation of hydrogeological data frequently involves assimilating information from many sites each with a unique geographical location. Interpretation of these data requires that the spatial location be incorporated into the analysis. Geographic Information System (GIS) can be used efficiently for this purpose where hydrogeological data having different spatial identity can be analyzed objectively using different logical approaches. In the present paper GIS is used for the analysis of hydrogeological data acquired from remote sensing and surface geophysical techniques for the assessment of groundwater condition of a soft rock terrain in Midnapur District, West Bengal, India. Indian Remote Sensing (IRS-1B) LISS-II data is used for the generation of thematic map of geology. Geophysical survey is conducted using Vertical electrical sounding (VES) at 139 locations in the study area. The data is interpreted using evolutionary programming technique based on global optimization. Aquifer resistivity and thickness interpreted from VES data is used to generate the corresponding thematic maps. Weights are assigned to different ranges of resistivity and thickness values based on their position on geological map. Finally the weighted maps are integrated using a GIS based aggregation method to model the hydrogeological condition of the area.

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This article was published in Journal of Spatial Hydrology and referenced in International Journal of Waste Resources

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