Numerical Simulation of 5·12 Wenchuan M<SUB>S8.0 Earthquake Geodynamic Background
详细信息
- 责任者：Liao Li (Institute of Geophysics ; China Earthquake Administration ; Beijing 100081 ; China) ; Zhang Dongning
- 刊名：Chinese Journal of Geophysics
- 出版年：2012
- 卷期：55(1)
- 关键词：汶川地震2008 ; Wenchuan earthquake 2008 ; 龙门山断裂带 ; Longmenshan Fault Zone
- 页码：p.126-136
- 图表：13 illus., 2 tables, 26 refs.
- 分类号：0500
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
Summary name="EnDivSummary">By using GPS data, stress field and source rupture process as constraint condition, the authors studied the geodynamic background of Wenchuan MS8.0 earthquake to confirm whether or not the starting rupture position of the earthquake and the fault dislocation pattern were influenced by the elevation and rheological strength difference between the Sichuan Basin and Tibetan Plateau, and by the different frictions of Longmenshan faults and fault geometry. The result shows that, when considering the deep material of Tibetan Plateau flowing toward east, the above factors all actually influence the starting rupture position of the earthquake and the fault dislocation pattern. This paper uses the geodynamic finite element software to simulate the rupture process of Longmenshan faults during the Wenchuan earthquake.