Geophysical Exploration analysis on Varthur catchment area of Dakshina Pinakini river basin, Karnataka, India, using GIS and Remote Sensing techniques.
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Abstract
Geophysical exploration analysis like Vertical Electrical soundings and profiling have proved to be very valuable tools in prospecting for geothermal energy in many countries. Three principal variations of direct current methods have found use in geothermal energy exploration. The selected area. In general, the crystalline terrain in Bangalore has four-layer subsurface configurations such as top soil zone followed by weathered zone, fractured zone and massive rock. The resistivity data were interpreted through inverse slope method and estimated the thickness of weathered zone, fractured zone and depth of bed rock. The thickness values were plotted in the respective VES location and contour maps were generated for weathered zone and fractured formation and depth to bed rock.
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