Magnetotelluric investigations over geothermal provinces of India: an overview

Authors: PRABHALA BHAKHARA VENKATA SUBBARAO, PACHIGOLLA VENKATA VIJAYA KUMAR, DORNADULA CHANDRASEKHARAM, VASU DESHMUKH, AJAY KISHORE SINGH

Abstract: Magnetotelluric (MT) and audio-magnetotelluric (AMT) studies are sensitive to the geothermal fluids filling the faults and/ or fracture zones of the geothermal system. In India, MT/AMT studies have been carried out in NW Himalayas, central, eastern, and western India. In other areas, detailed MT/AMT studies need to be expedited. This review paper presents the art of geothermal exploration in India by using MT/AMT techniques and identifies potential zones that can be exploited for power generation and direct application. Reservoir characteristics, carbon emissions reduction methods, and levelised cost factor are also discussed.

Keywords: Geothermal zones, magnetotellurics, conductivity anomaly

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