云南中部及周围地区近期地壳形变特征  

CHARACTERISTICS OF RECENT CRUSTAL DEFORMATION IN MEDIAN AND SURROUNDING AREAS OF YUNAN

作　　者：韩月萍[1] 杨国华[1] 高艳龙[1] 郭良迁[1] 张风霜[1] 

机构地区：[1]中国地震局第一监测中心,天津300180

出　　处：《大地测量与地球动力学》2009年第6期64-67,共4页Journal of Geodesy and Geodynamics

基　　金：国家科技攻关计划(200BAC44B02);中国地震局强化华北地区强震监视跟踪项目

摘　　要：利用云南中部地区1992、2001、2006年3期精密水准复测资料以及1999—2007年数期GPS资料,分析该区近年来地壳形变状态与特征。结果表明:云南中部地区近期整个形变场差异运动显著,呈逆继承运动特征,反映出区域应力场变化的态势;GPS结果表明,印尼地震对川滇地区有明显的影响,同时可能对汶川地震的发生具有某种程度的催化作用。With the use of repectedly measured level data in three periods： 1992,2001 and 2006 , and GPS data in several periods from 1999 to 2007 in the median region of Yunnan, this paper analyzes the status and characteristics of crustal deformation in this area are analyzed. The results suggest that differential movement of the whole deformation field in median region of Yunnan is obvious and manifests itself of a characteristic of non-inherit, and this reflects that the regional strain field has changed to some extent; the GPS results suggest that Indonesia earthquake has an obvious effect on Sichuan and Yunnan Area, and probably has an catalysis function on the happence of Wenchuan earthquake to certain extent.

关 键 词：云南地区 地壳形变 GPS 印尼地震 汶川地震 

分 类 号：P315.725[天文地球—地震学]