首页 | 官方网站   微博 | 高级检索  
     

Seismicity acceleration model and its application to several earthquake regions in China
作者姓名:WEN-ZHENG  YANG
作者单位:Center for Analysis and Prediction, China Seismological Bureau, Beijing 100036, China
基金项目:地震科学联合基金;198044;
摘    要:With the theory of subcritical crack growth, we can deduce the fundamental equation of regional seismicity acceleration model. Applying this model to intraplate earthquake regions, we select three earthquake subplates: North China Subplate, Chuan-Dian Block and Xinjiang Subplate, and divide the three subplates into seven researched regions by the difference of seismicity and tectonic conditions. With the modified equation given by Sornette and Sammis (1995), we analysis the seismicity of each region. To those strong earthquakes already occurred in these region, the model can give close fitting of magnitude and occurrence time, and the result in this article indicates that the seismicity acceleration model can also be used for describing the seismicity of intraplate. In the article, we give the magnitude and occurrence time of possible strong earthquakes in Shanxi, Ordos, Bole-Tuokexun, Ayinke-Wuqia earthquake regions. In the same subplate or block, the earthquake periods for each earthquake region are similar in time interval. The constant αin model can be used to describe the intensity of regional seismicity, and for the Chinese Mainland, α is 0.4 generally. To the seismicity in Taiwan and other regions with complex tectonic conditions, the model does not fit well at present.

关 键 词:seismicity  acceleration  model  subcritical  crack  growth  China  earthquake  region  fit
收稿时间:28 May 1998
修稿时间:16 September 1998

Seismicity acceleration model and its application to several earthquake regions in China
WEN-ZHENG YANG.Seismicity acceleration model and its application to several earthquake regions in China[J].Acta Seismologica Sinica(English Edition),1999,12(1):35-45.
Authors:WEN-ZHENG YANG  LI MA
Affiliation:Center for Analysis and Prediction, China Seismological Bureau, Beijing 100036, China
Abstract:With the theory of subcritical crack growth, we can deduce the fundamental equation of regional seismicity acceleration model. Applying this model to intraplate earthquake regions, we select three earthquake subplates: North China Subplate, Chuan-Dian Block and Xinjiang Subplate, and divide the three subplates into seven researched regions by the difference of seismicity and tectonic conditions. With the modified equation given by Sornette and Sammis (1995), we analysis the seismicity of each region. To those strong earthquakes already occurred in these region, the model can give close fitting of magnitude and occurrence time, and the result in this article indicates that the seismicity acceleration model can also be used for describing the seismicity of intraplate. In the article, we give the magnitude and occurrence time of possible strong earthquakes in Shanxi, Ordos, Bole-Tuokexun, Ayinke-Wuqia earthquake regions. In the same subplate or block, the earthquake periods for each earthquake region are similar in time interval. The constant α in model can be used to describe the intensity of regional seismicity, and for the Chinese Mainland, α is 0.4 generally. To the seismicity in Taiwan and other regions with complex tectonic conditions, the model does not fit well at present. This study is sponsored by Chinese Joint Seismological Science Foundation (198044), New Zealand Asia 2000 Plan and IGNS agency.
Keywords:seismicity acceleration model subcritical crack growth China earthquake region fit
本文献已被 CNKI 万方数据 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号