Qualitative Study of Coast Effect on MV and MT Measurements in Western Coast of India

Magneto-variational (MV) and Magnetotelluric (MT) methods use natural geomagnetic fields which have been found to be affected by the ocean worldwide. During last decade, MV and MT studies have been carried out in the western part of India. In the present paper, two-dimensional modelling has been carried out to investigate the coast effect on MV and MT data observed near the coast. Varying coastal and continental layer parameters of the western part of the Deccan trap region have been taken to examine the coast effect. The MV and MT data are found to be affected by the coast up to 300 km.