Strong Ground Motion Estimation During the Kutch, India Earthquake

Iyengar, RN and Raghu Kanth, STG (2006) Strong Ground Motion Estimation During the Kutch, India Earthquake. In: Pure And Applied Geophysics, 163 (1). pp. 153-173.

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Abstract

In the absence of strong motion records, ground motion during the 26th stop January, 2001 Kutch, India earthquake, has been estimated by analytical methods. A contour map of peak ground acceleration (PGA) values in the near source region is provided. These results are validated by comparing them with spectral response recorder data and field observations. It is found that very near the epicenter, PGA would have exceeded 0.6 g. A set of three aftershock records have been used as empirical Green's functions to simulate ground acceleration time history and 5% damped response spectrum at Bhuj City. It is found that at Bhuj, PGA would have been 0.31 g-0.37 g. It is demonstrated that source mechanism models can be effectively used to understand spatial variability of large-scale ground movements near urban areas due to the rupture of active faults.

Item Type:	Journal Article
Publication:	Pure And Applied Geophysics
Publisher:	Birkhauser Verlag Ag
Additional Information:	Copyright of this article belongs to Birkhauser Verlag Ag.
Keywords:	Strong motion;empirical Green's Function;source mechanism ; response spectrum;peak acceleration.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	09 Apr 2009 11:30
Last Modified:	19 Sep 2010 04:59
URI:	http://eprints.iisc.ac.in/id/eprint/17920

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