Tectonic Setting and Major Earthquakes in India- An Overview

Mr. Sandeep

Abstract


It is likely said India has witnessed a history of earthquake disasters. Therefore geological data in the form of liquefaction features is needed to extend the historical record beyond the most recent few centuries. India has a long history of earthquakes which have been recorded in Tibet and in Northern India and reached up to a magnitude of M = 8.2. This is primarily because Seismic gaps have been developed along two thirds of the Himalayan these past 5 centuries. When this data is combined with geodetic convergence rates of approximately 1.8 m/cy, it is observed that one or more M = 8 earthquakes may be overdue till present day. The reason behind occurrence of earthquakes in Peninsular India is the consistent stresses induced in the Indian plate flexed by its collision with Tibet. This makes it a region of abnormally high seismicity in western India appears to be caused by local convergence across the Rann of Kachch and possibly other rift zones of India. Most of the scholars agree to the fact that since the plate itself deforms little, this deformation may be related to incipient plate fragmentation in Sindh or over a larger region of NW India.

 


Keywords


Earthquake, Natural Calamities, Convergence, Peninsular India, Mitigation.

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