The Impact of the 24 March 2011 Myanmar Earthquake (MS 7.2) on Seismic Structure of Yunnan Region
详细信息
- 责任者：Yang Wen (China Earthquake Network Center ; Beijing 100045 ; China) ; Liu Jie
- 刊名：Earth Science Frontiers
- 出版年：2013
- 卷期：20(3)
- 关键词：大震 ; great earthquakes ; 云南 ; Yunnan Province ; 缅甸 ; Burma
- 页码：p.35-44
- 图表：illus., 1 table, 32 refs.
- 分类号：0500
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
The velocity structure and the velocity variation in the sixty days before and after the Myanmar earthquake(MS 7.2) on March 24,2011 are inverted by the ambient noise and cross-correlation method,using the continuous seismic waveform records from January to June,2011 in Yunnan region.Meanwhile,the spatial response ratio distribution of strain energy release is obtained using moderate and small earthquakes,and the coulomb stress impacts in different faults caused by the Myanmar earthquake are calculated using the source parameters of the Myanmar earthquake.The results show that in Luquan-Huaping,Yongding-Lushui,and Tonghai-Jianshui regions,the velocities increase,and the seismic activity and coulomb stress in corresponding fault zones of these regions are enhanced,reflecting the positive impact on tectonic activities;in Malong-Xuanwei and Lincang-Jinghong regions,the seismic activity and coulomb stress in fault zone of these regions are decreased,reflecting the negative impact on tectonic activities.