The　stress　field　variation　caused　by　faulting　and　the　prediction　for　seismic　risk

作     者：赵根模 姚兰予 马淑芹 

作者机构：Seismological Bureau of Tianjin Municipality Tianjin China 

出 版 物：《Acta Seismologica Sinica(English Edition)》 (地震学报(英文版))

年 卷 期：1994年第7卷第4期

页      面：559-566页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

主　　题：fault interaction variation of stress field earthquake triggering seismic risk 

摘      要：The stress field caused by faulting has an effect on the stability of the neighboring faults, and the study on the fault interaction has a close relation with the prediction of seismic risk. Stress field caused by the rectangle fault in the semi-infinite elastic medium is calculated on the basis of the elastic dislocation theory. The result shows that most of the successive large earthquakes, in the southwestern part of China and North China, occurred in the increasing area of shear stress S(xy) and the decreasing area of normal stress S(yy) The increasing of earthquake occurrence probability has a function relation with the increasing of stress. Earthquake triggering is resulted from the increasing of shear stress and the decreasing of normal stress. An activation coefficient A, of the earthquake is defined to express the change of seismic activity. The concrete risk region can be obtained through space scanning of At value. Finally, the fault interaction in a large scope is discussed in this paper.