Region-specific deterministic and probabilistic seismic hazard analysis of Kanpur city

Journal of Earth system science

Anbazhagan P1 2²  Nassir S N Al-Arifi3¹  Ketan Bajaj1²  Nairwita Dutta1²  Sayed S R Moustafa2 3³ 

[1] National Research Institute of Astronomy and Geophysics (NRIAG), Cairo 11421, Egypt.$$;Department of Civil Engineering, Indian Institute of Science, Bengaluru 560 012, India.$$;King Saud University, Riyadh, Saudi Arabia.$$

关键词: DSHA;    PSHA;    maximum magnitude;    rupture characteristics;    GMPE;    SA;    PGA.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

A seismic hazard map of Kanpur city has been developed considering the region-specific seismotectonic parameters within a 500-km radius by deterministic and probabilistic approaches. The maximum probable earthquake magnitude extit(Mmax) for each seismic source has been estimated by considering the regional rupture characteristics method and has been compared with the maximum magnitude observed extit(Mobsmax), extit(Mobsmax) + 0.5 and Kijko method. The best suitable ground motion prediction equations (GMPE) were selected from 27 applicable GMPEs based on the ‘efficacy test’. Furthermore, different weight factors were assigned to different Mmax values and the selected GMPE to calculate the final hazard value. Peak ground acceleration and spectral acceleration at 0.2 and 1 s were estimated and mapped for worstcase scenario and 2 and 10% probability of exceedance for 50 years. Peak ground acceleration (PGA) showed a variation from 0.04 to 0.36 g for DSHA, from 0.02 to 0.32 g and 0.092 to 0.1525 g for 2 and 10% probability in 50 years, respectively. A normalised site-specific design spectrum has been developed considering three vulnerable sources based on deaggregation at the city center and the results are compared with the recent 2011 Sikkim and 2015 Nepal earthquakes, and the Indian seismic code IS 1893.

【 授权许可】

Unknown