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Assessment of seismic hazard and liquefaction potential of Gujarat based on probabilistic approaches

Vipin, KS and Sitharam, TG and Kolathayar, S (2012) Assessment of seismic hazard and liquefaction potential of Gujarat based on probabilistic approaches. In: NATURAL HAZARDS, 65 (2). pp. 1179-1195.

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Official URL: http://dx.doi.org/10.1007/s11069-012-0140-6

Abstract

Gujarat is one of the fastest-growing states of India with high industrial activities coming up in major cities of the state. It is indispensable to analyse seismic hazard as the region is considered to be most seismically active in stable continental region of India. The Bhuj earthquake of 2001 has caused extensive damage in terms of causality and economic loss. In the present study, the seismic hazard of Gujarat evaluated using a probabilistic approach with the use of logic tree framework that minimizes the uncertainties in hazard assessment. The peak horizontal acceleration (PHA) and spectral acceleration (Sa) values were evaluated for 10 and 2 % probability of exceedance in 50 years. Two important geotechnical effects of earthquakes, site amplification and liquefaction, are also evaluated, considering site characterization based on site classes. The liquefaction return period for the entire state of Gujarat is evaluated using a performance-based approach. The maps of PHA and PGA values prepared in this study are very useful for seismic hazard mitigation of the region in future.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to SPRINGER, NEW YORK, USA
Keywords: Probabilistic seismic hazard;PHA;Site response;Liquefaction;SPT
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Francis Jayakanth
Date Deposited: 04 Jan 2013 11:51
Last Modified: 04 Jan 2013 11:51
URI: http://eprints.iisc.ac.in/id/eprint/45614

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