TITLE:
Basement Configuration from Magnetotelluric Studies in Bhuj Earthquake Epicentral Zone, Gujarat, India
AUTHORS:
S. Kareemunnisa Begum, T. Harinarayana
KEYWORDS:
Bhuj, Magnetotellurics, Earthquake, Surface Ruptures, Tectonics, Gujarat
JOURNAL NAME:
Open Journal of Earthquake Research,
Vol.5 No.3,
August
30,
2016
ABSTRACT: A wide band (1000 - 0.001 Hz) magnetotelluric study has been taken up in the Bhuj earthquake
epicentral zone and 21 sites have been occupied along three profiles during March-April 2001 to
understand the deep structure of the region. In addition the region surrounding Bhuj has been
probed earlier with number of MT profiles and the subsurface structure is well constrained from
hydrocarbon exploration point of view besides seismotectonic studies. In the present study, the
results obtained along 130 km long profile from Mundra to Rapar oriented in NE-SW direction
passing through the epicenter are presented considering these two databases. The subsurface
structure has shown interesting correlation with the surface deformations, a new basement configuration
and associated seismotectonics of the region. Our main result is relating the basement
configuration and surface ruptures.