滇西区域构造应力场分析  

Analysis of tectonic stress field in western Yunnan

作　　者：林向东 赵亮[1] 袁怀玉[2,3,4] 吴朋 武敏捷[2] 叶泵[6] 赵桂儒[2] 孙海霞[2] 杨选[7] 侯丽娟[2] LIN Xiangdong;ZHAO Liang;YUAN Huaiyu;WU Peng;WU Minjie;YE Beng;ZHAO Guiru;SUN Haixia;YANG Xuan;HOU Lijuan(State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Beijing Earthquake Agency,Beijing 100080,China;ARC Centre of Excellence from Core to Crust Fluid Systems,Department of Earth and Environmental Sciences,Macquarie University,North Ryde,New South Wales 2019,Australia;Centre for Exploration Targeting,The University of Western Australia,Crawley,Western Australia 6009,Australia;Sichuan Earthquake Agency,Chengdu 610041,China;Western-Yunnan Earthquake Prediction Study Area,Yunnan Earthquake Agency,Dali 671000,China;Guangdong Earthquake Agency,Guangzhou 510070,China)

机构地区：[1]中国科学院地质与地球物理研究所岩石圈演化国家重点实验室,中国北京100029 [2]北京市地震局,中国北京100080 [3]ARC Centre of Excellence from Core to Crust Fluid Systems,Department of Earth and Environmental Sciences,Macquarie University,North Ryde,New South Wales 2019,Australia [4]Centre for Exploration Targeting,The University of Western Australia,Crawley,Western Australia 6009,Australia [5]四川省地震局,中国成都610041 [6]云南省地震局滇西地震预报实验场办公室,中国大理671000 [7]广东省地震局,中国广州510070

出　　处：《地震地磁观测与研究》2021年第2期166-167,共2页Seismological and Geomagnetic Observation and Research

基　　金：国家自然科学基金(项目编号:41604045,41474087);地震科技星火计划(项目编号:XH200103)。

摘　　要：云南地处印度板块、欧亚板块-中国大陆碰撞带东缘,地壳运动剧烈,主要受到印度板块NE向挤压与川滇菱形块体SSE滑移的联合作用。在构造上,云南地区可以划分为滇缅泰板块、印支板块、扬子板块、华南板块等4个一级构造单元和腾冲块体、保山块体、兰坪-思茅弧后盆地、盐源-丽江陆缘坳陷、滇中坳陷、康滇古隆起、滇东坳褶等7个二级构造单元。滇西区域构造包含缅泰板块、印支板块、扬子板块3个一级构造单元和腾冲块体、保山块体、兰坪-思茅弧后盆地、盐源-丽江陆缘坳陷、滇中坳陷等5个二级构造单元,深大断裂发育,是云南地震活跃区域之一,对该区域应力场进行研究,有助于深入认识其地壳动力学特征及强震孕育成因。

关 键 词：震源机制 地震矩张量 横波分裂 应力场 滇西区域 

分 类 号：P315.727[天文地球—地震学]