Acta Seismologica Sinica

, Volume 20, Issue 3, pp 312–318 | Cite as

Comparison of the spatial distribution of ground motion between main shocks and strong aftershocks

  • Lü Xiao-jian  (吕晓健)
  • Gao Meng-tan  (高孟潭)
  • Gao Zhan-wu  (高战武)
  • Mi Su-ting  (米素婷)
Article
Received:
Accepted:

Abstract

Using the ground motion attenuation relation, we calculated and compared the effective peak acceleration (EPA) generated by main shocks and their strong aftershocks of 21 earthquake sequences with M S≥7 occurred in Chinese mainland and offing of China during 1966∼2002. The result shows that EPA of strong aftershocks usually exceed that of main shock for 76.2% earthquake sequences and EPA of more than 50% strong aftershocks are greatly larger than that of main shocks in large area, which suggests that it is necessary to take damage produced by strong aftershock into account in the probabilistic seismic hazard analysis and the seismic design.

Key words

strong aftershock effective peak acceleration seismic design 

CLC number

P315.9 
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Copyright information

© Seismological Society of China 2007

Authors and Affiliations

  • Lü Xiao-jian  (吕晓健)
    • 1
    • 2
  • Gao Meng-tan  (高孟潭)
    • 1
  • Gao Zhan-wu  (高战武)
    • 2
  • Mi Su-ting  (米素婷)
    • 2
  1. 1.Institute of GeophysicsChina Earthquake AdministrationBeijingChina
  2. 2.Institute of Earthquake ScienceChina Earthquake AdministrationBeijingChina

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