中、强震前应力场动态演变特征综合分析  

Comprehensive analysis of dynamic evolution characteristics of stress field before moderate and strong earthquakes

作　　者：周翠英[1] 陈虹[2] 王红卫[1] 郭瑞芝[3] 王梅[1] 郑建常[1] 

机构地区：[1]山东省地震局,山东济南250014 [2]中国地震局地壳应力研究所,北京100085 [3]天津市地震局,天津300201

出　　处：《地震》2000年第2期27-36,共10页Earthquake

基　　金：中国地震局"九五"科研攻关项目!( 95-0 4 -0 4 -0 2 -0 3 )部分成果

摘　　要：使用由地震记录 P波初至波符号求取的小震综合机制解资料 ,分析研究了华北地区 4次中强地震前震源区及其附近小震应力场的动态变化。结合前人的有关研究成果 ,综合归纳了中、强地震前震源区及附近应力场的动态演变特征 ,并尝试给出了小震综合机制解参数预报地震的判据指标。By using the data of comprehensive mechanism solutions of small earthquakes and suing the signs ofinitial Pwave recorded by seismic recording,the dynamic changes of stress field of small earthquakes occurred before four moderate-strong earthquakes in North China have been studied.Combined with some previous results,we have generalized preliminarily the dynamic evolution characteristics of stress field in the focal region and its adjacent area before moderate and strong earthquakes,and tried to give out the judgementindex of earthquake prediction with the comprehensive mechanism solution of small earthquake.

关 键 词：中强地震 应力场 演化特征 华北地区 地震预报 

分 类 号：P315.7[天文地球—地震学]