摘要
本文以集集地震为例,讨论了在多个小断层的位错模型,分层地质结构这种更加接近实际的情况下的库仑应力变化,计算结果表明有必要考虑这些符合实际的模型.本文分别讨论了走滑断层上库仑应力变化与走滑地震、逆冲断层上库仑应力变化与逆冲地震空间分布的对应关系,计算结果表明集集地震所引起的库仑应力变化确实有利于本地区余震的发生.
This paper deals with the Coulumb stress change according to the fault model composed of many small faults and layered geological crust model. Then we take Chi-Chi earthquake for example, to analyza the relation of the Coulumb stress change and the spatial distribution of the aftersocks. This paper discusses the relations the Coulumb stress change on the strike fault, dip fault and the distribution of strike earthquakes and dip earthquakes, respectively. The results demonstrate that the Coulumb stress change caused by the Chi-Chi earthquake is favorable to the occurrence of aftershockes in this region.
出处
《地球物理学进展》
CSCD
北大核心
2009年第2期367-374,共8页
Progress in Geophysics
基金
地震预测研究所基本科研业务专项(02076902-11)
国家自然科学基金项目(40574043)资助
关键词
库仑应力变化
余震分布
集集地震
coulumb stress change, distribution of aftersock, Chi-Chi earthquake
