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Seismic hazard analysis of India using areal sources

Sitharam, TG and Kolathayar, Sreevalsa (2013) Seismic hazard analysis of India using areal sources. In: JOURNAL OF ASIAN EARTH SCIENCES, 62 (SI). pp. 647-653.

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Official URL: http://dx.doi.org/10.1016/j.jseaes.2012.11.013


In view of the major advancement made in understanding the seismicity and seismotectonics of the Indian region in recent times, an updated probabilistic seismic hazard map of India covering 6-38 degrees N and 68-98 degrees E is prepared. This paper presents the results of probabilistic seismic hazard analysis of India done using regional seismic source zones and four well recognized attenuation relations considering varied tectonic provinces in the region. The study area was divided into small grids of size 0.1 degrees x 0.1 degrees. Peak Horizontal Acceleration (PHA) and spectral accelerations for periods 0.1 s and 1 s have been estimated and contour maps showing the spatial variation of the same are presented in the paper. The present study shows that the seismic hazard is moderate in peninsular shield, but the hazard in most parts of North and Northeast India is high. (C) 2012 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier SCience
Keywords: India;Seismic hazard; PSHA; Source zones; Peak Horizontal Acceleration
Department/Centre: Division of Interdisciplinary Sciences > Center for Infrastructure, Sustainable Transportation and Urban Planning (CiSTUP)
Division of Mechanical Sciences > Civil Engineering
Date Deposited: 01 Apr 2013 11:21
Last Modified: 01 Apr 2013 11:21
URI: http://eprints.iisc.ac.in/id/eprint/46252

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