|
|
Spatio-temporal characteristics of strong aftershocks of the MS8.0 Wenchuan earthquake |
Jisheng Zhao1, 2, Yanqiong Liu2, Zhenghua Zhou2, Chenggang Zhao1 |
1 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
2 Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China |
|
|
Abstract Based on Gutenberg-Richter’s relation, Bath’s law, Omori’s law and Well’s relation of rupture scale, this paper forecasts the temporal decay, total number, possible area and greatest magnitude of strong aftershocks (greater than or equal to M6.0) of the MS8.0 Wenchuan earthquake by using the magnitude and statistical parameters of earthquakes in California area of USA. The number of strong aftershocks, the parameters of Gutenberg-Richter’s relation and the modified form of Omori’s law are validated based on the relocation data of aftershock sequence of the MS8.0 Wenchuan earthquake. Moreover, the spatio-temporal characteristics and wave energy release of the strong aftershocks (M≥6.0) are analyzed. The result shows that strong aftershocks may occur at the end of local drop and sharp drop on the wave energy release curve.
|
Received: 20 October 2009
Published: 10 June 2010
|
Fund:Basic Science and Research Fund for Chinese Commonweal Institutes under grant No. 2008B07, the National Natural Science Foundation of China under grant No. 90715042, Special Research Project of Earthquake Engineering under grant No. 200808008, and National Science and Technology Support Plan under grant No. 2006BAC13B02 |
Corresponding Authors:
Jisheng Zhao
E-mail: jisheng_zhao@163.com
|
|
|
|
[1] |
Yu Wang, Shengli Ma, Toshihiko Shimamoto, Lu Yao, Jianye Chen, Xiaosong Yang, Honglin He, Jiaxiang Dang, Linfeng Hou, Tetsuhiro Togo. Internal structures and high-velocity frictional properties of Longmenshan fault zone at Shenxigou activated during the 2008 Wenchuan earthquake[J]. Earthquake Science, 2014, 27(5): 499-528. |
|
|
|
|