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Recent Seismicity in India and Adjoining Regions

Kolathayar, Sreevalsa and Vipin , KS and Sitharam, TG (2012) Recent Seismicity in India and Adjoining Regions. In: International Journal of Earth Sciences and Engineering, 5 (1). pp. 51-59.

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Abstract

In the present work, historical and instrumental seismicity data of India and its adjoining areas (within 300km from Indian political boundary) are compiled to form the earthquake catalog for the country covering the period from 1505 to 2009. The initial catalogue consisted of about 139563 earthquake events and after declustering,the total number of events obtained was 61315. Region specific earthquake magnitude scaling relations correlating different magnitude scales were achieved and a homogenous earthquake catalogue in moment magnitude (MW) scale was developed for the region. This paper also presents the results of the use of Geographic Information Systems (GIS) to prepare a digitized seismic source map of India. The latest earthquake data were superimposed on the digitized source map to get a final Seismotectonic map of India. The study area has been divided into 1225 grid points (approximately 110km×110km) and the seismicity analysis has been done to get the spatial variation of seismicity parameters ‘a’ and ‘b’ across the country. The homogenized earthquake catalogue with the event details is listed in the website http://civil.iisc.ernet.in/~sreevals/resource.htm

Item Type: Journal Article
Additional Information: Copyright for this article belongs to CAFET-INNOVA TECHNICAL SOCIETY
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Id for Latest eprints
Date Deposited: 20 Jun 2014 08:47
Last Modified: 24 Jun 2014 09:28
URI: http://eprints.iisc.ac.in/id/eprint/49284

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