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Comprehensive Probabilistic Seismic Hazard Analysis of the Andaman-Nicobar Regions

Kolathayar, Sreevalsa and Sitharam, TG (2012) Comprehensive Probabilistic Seismic Hazard Analysis of the Andaman-Nicobar Regions. In: BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 102 (5). pp. 2063-2076.

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Official URL: http://dx.doi.org/10.1785/0120110219


An updated catalog of earthquakes has been prepared for the Andaman-Nicobar and adjoining regions. The catalog was homogenized to a unified magnitude scale, and declustering of the catalog was performed to remove aftershocks and foreshocks. Eleven regional source zones were identified in the study area to account for local variability in seismicity characteristics. The seismicity parameters were estimated for each of these source zones, and the seismic hazard evaluation of the Andaman-Nicobar region has been performed using different source models and attenuation relations. Probabilistic seismic hazard analysis has been performed with currently available data and their best possible scientific interpretation using an appropriate instrument such as the logic tree to explicitly account for epistemic uncertainty by considering alternative models (source models, maximum magnitude, and attenuation relationships). The hazard maps for different periods have been produced for horizontal ground motion on the bedrock level.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to SEISMOLOGICAL SOC AMER
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Francis Jayakanth
Date Deposited: 07 Dec 2012 08:46
Last Modified: 07 Dec 2012 08:46
URI: http://eprints.iisc.ac.in/id/eprint/45313

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