陕西中部地区跨断层垂直形变与水平应变相关性分析  

Correlation analysis on vertical deformation cross fault and horizontal strain data in middle Shaanxi Province

作　　者：戴王强[1] 王军儒[1] 赵小茂[1] 黄长林[1] 

机构地区：[1]陕西省地震局,陕西西安710068

出　　处：《地震》2007年第1期63-69,共7页Earthquake

基　　金：地震科学联合基金项目(104016);陕西省地震局科学基金项目(200501)

摘　　要：利用陕西中部地区近年来跨断层垂直形变资料和由GPS结果给出的水平最大剪应变场资料,对2005年度会商中提出的8处跨断层形变异常点位置,插值拟合出其水平应变值,并与垂直形变数据进行相关性分析发现,临潼-长安断裂垂直形变和水平应变正相关显著;口镇-关山断裂与华山山前断裂呈现负相关;岐山-马召断裂北段正相关显著,而中段与南段相关性差。这可能是由于这些断裂以及各段受力情况不同造成的,其中口镇-关山断裂东段和岐山-马召断裂北段近年来垂直运动幅度大活动强烈,应加以特别关注。Based on the recent vertical de field given by GPS data in middle Shanxi formation data cross fault and max-shear strain Province, the authors conducted simulation and interpolated strain value to the 8 unusual sites cross fault proposed in 2005 consultant conference. The Lintong-Changan fault shows obvious positive correlation, but Kouzhen- Guanshan fault and Huashanshanqian fault are negative correlation; the northern segment of Qishan-Mazhao fault is obvious positive correlation but middle and south segments are not. It is probably resulted from dynamical difference of these faults and different actual stress along different segments. Especially, the vertical movement of the eastern segment of Kouzhen-Guanshan fault and northern part of Qishan-Mazhao fault is strong, which should be pain more attention.

关 键 词：垂直形变 水平应变 相关分析 陕西中部地区 

分 类 号：P315.7[天文地球—地震学]