Strong Ground-Motion Simulation of the Wenchuan Earthquake
详细信息
- 责任者：Chang Ying (Institute of Geophysics ; China Earthquake Administration ; Beijing 100081 ; China) ; Zhou Hong
- 刊名：Acta Seismologica Sinica
- 出版年：2012
- 卷期：34(2)
- 关键词：汶川地震2008 ; Wenchuan earthquake 2008 ; 地震动 ; ground motion ; 四川 ; Sichuan Province
- 页码：p.224-234
- 图表：5 illus., 3 tables, 19 refs.
- 分类号：0500
- issnNo：ISSN0253-3782
- isbnNo：CN11-2021/P
摘要
Based on the deterministic simulation method, the authors try to simulate the broadband frequency (0.1~10 Hz) strong ground-motion by subdividing the slip distribution across the fault plane.This method is to discretize the fault in second order and decompose the rise time variation to increase the high frequency components in the source function,so as to avoid the dependence on the accuracy and richness of seismic records. The authors simulated ground motions of Wenchuan earthquake at 8 selected stations located near the fault. The results show an overall agreement on the peak acceleration and duration within ±50% tolerance between the simulated and observed accelerations. The result of this study indicates that this deterministic method of changing input source function can be applied to simulation of near-fault strong ground motion in broad frequency band.
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