Application of Fault Motion Coordination Ratio in Earthquake Prediction
详细信息
- 责任者：Zhang Jing (Institute of Earthquake Science ; CEA ; Beijing 100036 ; China) ; Li Kaiwu
- 刊名：Earthquake
- 出版年：2011
- 卷期：31(3)
- 关键词：活动断层 ; active faults ; 地震预测 ; earthquake prediction ; 中国 ; China
- 页码：p.19-26
- 图表：8 illus., 9 refs.
- 分类号：0500
- 出版序号：124
- issnNo：ISSN1000-3274
- isbnNo：CN11-1893/P
摘要
In this paper, the authors analyzed the fault movements in Sichuan-Yunnan region and the Capital area of China applying the concept of fault motion coordination ratio(FCR).The results show that: 1) the fault had been locked for at least ten years at the source region of M7.0 Lijiang earthquake.The different characteristics of spatial and temporal of FCR change among several surveying sites,which may reflect the evolution of abnormal changes in the seismic source and external regions; 2) the nature of fault motion can be identified using parameter of FCR.Fault movement is in free and non-strain accumulation state if FCR is in normal level,even though baseline and level surveying curve showed abnormal changes; and 3) certain kind of discrete changes of FCR appear before the majority of great earthquakes,which has certain values in analyzing the nature of fault motion,strain accumulation state and long-term earthquake prediction.