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Seismic treatment for a maximal credible earthquake in Guwahati city area of northeast India region

Author

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  • Olga Erteleva
  • Felix Aptikaev
  • Saurabh Baruah
  • Santanu Baruah
  • Sajal Deb
  • J. Kayal

Abstract

Strong ground motion parameters for the Guwahati city area, the capital city of the state of Assam in northeast India, are examined with the help of data accrued from local as well as worldwide network. Empirical relations are proposed for the ground motion parameters as a function of earthquake magnitude, distance, fault type, source depth and velocity characteristics of medium. Seismotectonics of the study region is examined, and a maximum credible earthquake M S ~ 8.0 is presumed from the Brahmaputra fault, the nearest source zone in the city area. Such great/major event may cause intensity of the of 9.3 with a probability of 0,95 in the Guwahati city during time interval of 500 years. Further, the design spectrum with 67 % confidence level and the synthetic three-component accelerograms are constructed. These results are much relevant and useful for structural engineering to mitigate seismic hazards in the region. Copyright Springer Science+Business Media Dordrecht 2014

Suggested Citation

  • Olga Erteleva & Felix Aptikaev & Saurabh Baruah & Santanu Baruah & Sajal Deb & J. Kayal, 2014. "Seismic treatment for a maximal credible earthquake in Guwahati city area of northeast India region," 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. 70(1), pages 733-753, January.
    • Handle: RePEc:spr:nathaz:v:70:y:2014:i:1:p:733-753
    DOI: 10.1007/s11069-013-0843-3
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