摘要
通过对昆仑山口西8.1级地震和汶川8.0级地震震前GPS资料所反映的孕震特征的分析,对地壳形变资料应用于孕震机理和地震预测研究中在最近几十年的主要进展进行了回顾分析,并对比了中外学者针对上述问题科学思路的异同。在此基础上,对走滑型和倾滑型地震断层带区域孕震形变场特征进行分析,强调孕震过程地壳形变的认识模式需要从孕震断层拓展到区域甚至更大区域,并需从多尺度地壳形变时空过程来认识强震孕震形变动态特征,进而获取强震预测判据。
Based on the analysis of the preparation characteristics of the Kunlun 8.1 earth- quake and the Wenchuan 8.0 earthquake revealed from GPS data, we review the main re- search developments of earthquake mechanism and forecast using crustal deformation data in the past decades, and discuss the similarities and differences of scientific approachs be- tween Chinese and foreign scholars. Deformation characteristics of earthquake preparation associated with slip faults and dip-slip faults are analyzed. It is emphasized that, in order to understand the model of relationship between the crustal deformation and earthquake preparation, we should expand the attentions from fault scale to regional scale, and recog- nize the dynamic deformation characteristics associated with earthquake preparation in multi-scale, spatial-temporal process, and so to obtain the criteria of strong earthquake forecast.
出处
《地震》
CSCD
北大核心
2012年第2期8-21,共14页
Earthquake
基金
国家自然科学基金项目(40974005)资助
关键词
GPS
弹性回跳
强震地点预测
形变场动态特征
应变率场
GPS
Elastic rebound Earthquake preparation
Dynamic characteristics ofdeformation field
Strain rate field
