Comparison on Characteristics of Strong Ground Motion from Two Earthquakes with Similar MW: the Baja, Mexico , MW7.2 and Yushu , China
详细信息
- 责任者：Meng Lingyuan (College of Earth Science ; Graduate University ; Chinese Academy of Sciences ; Beijing 100049 ; China) ; Shi Baoping
- 刊名：Acta Seismologica Sinica
- 出版年：2012
- 卷期：34(1)
- 关键词：玉树地震2010 ; Yushu earthquake 2010 ; 强震 ; strong earthquakes ; 大震 ; great earthquakes ; 中国 ; China ; 墨西哥 ; Mexico
- 页码：p.1-19
- 图表：8 illus., 2 tables, 31 refs.
- 分类号：0500
- issnNo：ISSN0253-3782
- isbnNo：CN11-2021/P
摘要
In this paper, two special finite fault models with the same size in fault length and width are constructed to simulate the near-fault strong ground motions for comparison study of Yushu earthquake 2010 and Baja Mw7.2 earthquake. The fault slip distributions on both faults are generated based on a dynamical composite source model, in which the subevent-source-function is described by Brune’s pulse. The result shows that the near-field peak ground accelerations (PGAs) and peak ground velocities (PGVs) on bed rocks from Yushu event are almost twice as that from Baja event. Moreover, if the shallow velocity structures are considered in the strong motion simulation, the resultant PGAs and PGVs from Yushu event are also twice as that from Baja event.
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