Where Did the Lushan MS7.0 Earthquake Occur in the World？
详细信息
- 责任者：Xu Lisheng (Institute of Geophysics ; Chinese Earthquake Administration ; Beijing 100081 ; China) ; Yan Chuan
- 刊名：Chinese Journal of Geophysics
- 出版年：2013
- 卷期：56(9)
- 关键词：地震定位 ; seismic location ; 破裂强度 ; fracture strength ; 四川 ; Sichuan Province
- 页码：p.2982-2993
- 图表：illus., 7 tables, 16 refs.
- 分类号：0500
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
The rupture initiation point and hypocentroid of the Lushan Ms7.0 earthquake,which occurred on April 20,2013,were imaged out by means of the TRIT （Time-Reversal Imaging Technique） using the velocity models and observation data which had been seriously chosen on purpose.The results showed the initiation point was at 30.289 ±0.005°N,102.946±0.007°E,and depth of 11.8 ± 2.3 km; the hypocentroid was the same as the initiation point during the first 3.5 s,and went around 30.27°N and 102.94°E even during the first 9.5 s,close to the initiation point,implying that the earthquake was characterized with bilateral rupture.