Coseismic Effect Simulation of the Yushu MS7.1 Earthquake and Absolute Gravity Inspection
详细信息
- 责任者：Tan Hongbo (Laboratory of Earthquake Geodesy ; Institute of Seismology ; CEA ; Wuhan 430071 ; China) ; Shen Chongyang
- 刊名：Earthquake Research in China
- 出版年：2013
- 卷期：29(1)
- 关键词：玉树地震2010 ; Yushu earthquake 2010 ; 重力勘探 ; gravity exploration ; 青海 ; Qinghai Province
- 页码：p.116-123
- 图表：illus., 3 tables, 18 refs.
- 分类号：0500
- issnNo：ISSN1001-4683
- isbnNo：CN11-2008/P
摘要
Using the conclusion of aftershocks relocation, inversion on seismic wave and InSAR results, and surface rupture displacement obtained by geological survey after the earthquake, this paper constructs a faults model of Yushu MS7.1 earthquake. Based on rectangular dislocation theory in elastic-viscoelastic layering medium, we have simulated the co-seismic deformation and gravity change with gravitational effect considered. The pictures show that the absolute gravity measuring point is beside the extremum of coseismic gravity change, and the numerical value reach to 25.02×10-8m·s-2. After a discussion about the gravity changes before the earthquake and the coherence consistency between two FG-5 absolute gravimeters, we think that the measured value 27.2×10-8m·s-2 at Yushu station is coseismic gravity change. It’s coincident with the simulation results based on dislocation theory. So it’s good inspection to the near-field changes on dislocation theory.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |