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

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Acta Seismologica Sinica

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.

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Authors and Affiliations

  1. Institute of Geophysics, China Earthquake Administration, Beijing, 100081, China

    Lü Xiao-jian  (吕晓健) & Gao Meng-tan  (高孟潭)

  2. Institute of Earthquake Science, China Earthquake Administration, Beijing, 100036, China

    Lü Xiao-jian  (吕晓健), Gao Zhan-wu  (高战武) & Mi Su-ting  (米素婷)

Authors
  1. Lü Xiao-jian  (吕晓健)
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  2. Gao Meng-tan  (高孟潭)
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  3. Gao Zhan-wu  (高战武)
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  4. Mi Su-ting  (米素婷)
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Corresponding author

Correspondence to Lü Xiao-jian  (吕晓健).

Additional information

Foundation item: Department of Science and Technology Important International Cooperate Subject (2004DFA06000) and Joint seismological Science Foundation of China (604025).

Contribution No.07FE3007, Institute Geophysics, China Earthquake Administration.

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Lü, Xj., Gao, Mt., Gao, Zw. et al. Comparison of the spatial distribution of ground motion between main shocks and strong aftershocks. Acta Seimol. Sin. 20, 312–318 (2007). https://doi.org/10.1007/s11589-007-0312-8

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  • DOI: https://doi.org/10.1007/s11589-007-0312-8

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