Post-seismic deformation associated with the 2001 Bhuj earthquake

Pallabee Choudhury (), J. Catherine, V. Gahalaut, Sumer Chopra, Rakesh Dumka and Ketan Roy

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2013, vol. 65, issue 2, 1109-1118

Abstract: We report the results of GPS measurements of post-seismic deformation due to the 2001 Bhuj earthquake in the Kachchh region, western India. The estimated horizontal velocity vectors in ITRF05 are in the range of 48–49 mm/year in N46–50°E. The observed velocity at the Gandhinagar permanent site, a far off site from the earthquake source region and probably unaffected by the post-seismic deformation, is 49 ± 1 mm/year in N47°E, which is consistent with the predicted motion of Indian plate at Gandhinagar. At other sites in the source region, transient post-seismic deformation is found to be low; it attenuated rapidly within 3–4 years of the earthquake and is much low now. Our results support the idea that mantle rheology is weak in the region. Copyright Springer Science+Business Media B.V. 2013

Keywords: Global Positioning System (GPS); Post-seismic deformation; Bhuj earthquake (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1007/s11069-012-0191-8

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