Seismicity of Gujarat

B. Rastogi, Santosh Kumar () and Sandeep Aggrawal

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2013, vol. 65, issue 2, 1027-1044

Abstract: Paper describes tectonics, earthquake monitoring, past and present seismicity, catalogue of earthquakes and estimated return periods of large earthquakes in Gujarat state, western India. The Gujarat region has three failed Mesozoic rifts of Kachchh, Cambay, and Narmada, with several active faults. Kachchh district of Gujarat is the only region outside Himalaya-Andaman belt that has high seismic hazard of magnitude 8 corresponding to zone V in the seismic zoning map of India. The other parts of Gujarat have seismic hazard of magnitude 6 or less. Kachchh region is considered seismically one of the most active intraplate regions of the World. It is known to have low seismicity but high hazard in view of occurrence of fewer smaller earthquakes of M ≤ 6 in a region having three devastating earthquakes that occurred during 1819 (M w 7.8), 1956 (M w 6.0) and 2001 (M w 7.7). The second in order of seismic status is Narmada rift zone that experienced a severely damaging 1970 Bharuch earthquake of M5.4 at its western end and M ≥ 6 earthquakes further east in 1927 (Son earthquake), 1938 (Satpura earthquake) and 1997 (Jabalpur earthquake). The Saurashtra Peninsula south of Kachchh has experienced seismicity of magnitude less than 6. Copyright Springer Science+Business Media B.V. 2013

Keywords: Seismicity of Gujarat; Earthquake catalogue; Tectonics of Gujarat; Rift valleys (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1007/s11069-011-0077-1

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