利用钻孔应变与GPS资料联合对忻州地区应变场特征的分析  

Analysis on Characteristics of Strain Field in Xinzhou Area Using Borehole Strain and GPS Data

作　　者：陈永前 张淑亮[1,2] 李宏伟[1,2] CHEN Yong-qian;ZHANG Shu-liang;LI Hong-wei(Shanxi Earthquake Agency, Taiyuan, Shanxi 030021,China;National Continental Rift Valley Dynamics Observatory of Taiyuan, Taiyuan, Shanxi 030025,China)

机构地区：[1]山西省地震局,山西太原030021 [2]太原大陆裂谷动力学国家野外科学观测研究站,山西太原030025

出　　处：《山西地震》2021年第2期1-5,共5页Earthquake Research in Shanxi

基　　金：山西省地震局科研项目(SBK-2003);山西省青年科技研究基金(201901D211550)。

摘　　要：基于忻定盆地内的四分量钻孔应变观测资料对应变参数进行计算,结果显示,5个测点的最大主应变、最小主应变、面应变和剪切应变的变化率均保持在相对稳定的水平,主方向也较为恒定,同时将计算结果与该区域GPS观测值解算的结果进行对比分析,表明该研究区的应变场处于较稳定的挤压状态。Based on the four component borehole strain observation data in Xinding basin,the strain parameters are calculated.The results show that the change rates of the maximum principal strainε1、the minimum principal strainε2、the area strainεa and the shear strainεs are relatively stable,and the main directionφis relatively constant.At the same time,the calculated results are compared with the results of GPS observations in this area,which shows that the strain field in the study area is in a relatively stable compression state.

关 键 词：GPS 四分量钻孔应变 区域应变场 应变参数 

分 类 号：P315.1[天文地球—地震学]