HYDROGEOPHYSICAL EXPLORATION FOR GROUND WATER IN MANDYA TALUK, KARNATAKA, INDIA

摘要

Mandya forms the fourth largest taluk in the Mandya district. This taluk forms a highly undulating terrain with considerable extent of barren rocky areas, comes under the semi-arid type with schist, granite and gneissic rocks. Vertical electrical soundings (VES) have been carried out at 50 locations in the area to determine the longitudinal conductance at different layer parameters for the preparation of ground water potential map. It has been observed that all the four types of resistivity curves of the three layered geoelectrical sections (A, K, H, & Q curve types) do exist in this area. The potential zones exist in and around southern parts of the taluk. Geophysical investigations are useful to ascertain the nature of aquifers and bedrock, below the soil cover, to locate potential zones, to find out to delineate the structurally deformed Groundwater potential zones.