昆明地区现代构造应力场分析  

Analysis on Recent Tectonic Stress Field in the Yunnan Region

作　　者：王绍晋[1] 龙晓帆[1] 余庆坤[1] 

机构地区：[1]云南省地震局,昆明650041

出　　处：《地震研究》2005年第2期178-184,共7页Journal of Seismological Research

基　　金：云南省"十五"重点项目"昆明高(超高)层建筑中近场强震项目"资助.

摘　　要：利用1965～2002年强震震源机制资料,对昆明及附近地区现代构造应力场空间分布、地震震源破裂特征进行了分析,认为昆明地区区域现代构造应力场以水平作用为主,主压应力优势方位为SSE—SE,主张应力优势方位为NE—NEE。Using the focal mechanism date of strong earthquakes in Kunming and adjacent region in 1965-2002, we analyzed the spatial distribution of recent tectonic stress field and focal rupture features in this region. The result shows the horizontal action plays a main role in recent tectonic stress field in this region,and the predominant direction of principal compressive stress is in SSE-SE, the predominant direction of principal extensional stress in NE-NEE.

关 键 词：震源机制 现代构造应力场 昆明地区 

分 类 号：P553[天文地球—构造地质学]