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Post-seismic deformation associated with the 2001 Bhuj earthquake

Author

Listed:
  • Pallabee Choudhury
  • J. Catherine
  • V. Gahalaut
  • Sumer Chopra
  • Rakesh Dumka
  • Ketan Roy

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

Suggested Citation

  • Pallabee Choudhury & J. Catherine & V. Gahalaut & Sumer Chopra & Rakesh Dumka & Ketan Roy, 2013. "Post-seismic deformation associated with the 2001 Bhuj earthquake," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 65(2), pages 1109-1118, January.
    • Handle: RePEc:spr:nathaz:v:65:y:2013:i:2:p:1109-1118
    DOI: 10.1007/s11069-012-0191-8
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