Geophysical investigation for groundwater exploration in Lakshadweep Islands – A case study
نویسنده
چکیده
One of the main problems experienced by the islanders of Lakshadweep is associated with the availability of fresh water for drinking purpose. The scarcity of fresh water is due to the peculiar hydrologic, geologic, geomorphic and demographic features. Proper understanding of the groundwater condition, in terms of availability, distribution and quality, is very important to meet the increasing demand and also to formulate future planning and development of water resources. However there is very limited data / information available with regard to hydrogeological aspects of Lakshadweep. It is in this context; this study has been carried out. Geophysical investigation, using electrical resistivity method, is employed to locate potential zones of ground water in Andrott Island, one of the 10 inhabited islands in Lakshadweep. The data has been interpreted with the help of computeraided techniques and presented in the form of spatial maps. The details of sub-surface lithology, as observed from the nearby existing dugwells and the water quality of the surrounding wells have also been considered during the interpretation of resistivity data.
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