地热对汶川8.0级地震的同震响应及震后调整  

CO-SEISMIC RESPONSE AND POSTSEISMIC EFFECT OF GEOTHERM ON WENCHUAN Ms8.0 EARTHQUAKE

作　　者：赵刚[1] 王军[2] 何案华[1] 秦久刚 

机构地区：[1]中国地震局地壳应力研究所,北京100085 [2]中国地震台网中心,北京100045 [3]地壳运动监测工程研究中心,北京100036

出　　处：《大地测量与地球动力学》2009年第2期29-32,42,共5页Journal of Geodesy and Geodynamics

基　　金：2007年公益性行业科研专项(H200708045);基本科研业务专项(ZDJ2008-01)

摘　　要：用收集到的全国277个地热观测台站的观测数据,研究了地热信息对汶川Ms8.0地震的响应,发现有134个台站存在同震响应和震后调整现象,其同震响应与震后调整按形态分为4种类型:渐变型、阶变恢复型、脉冲型和振荡型,分析还发现地热震后调整中含有相对当地应力状态调整的信息。On the basis of data of 277 countrywide geothermal precursor stations, the response of China geothermal earthquake precursor network to Wenchuan Ms 8.0 earthquake is studied. It is found that there are co-seismic and postseismic changes in 134 stations. According to the form, co-seismic response and postseismic adjustment can be devided into four types：gradual change, step change and resuming, impulse and oscillation. In adition,it is found that the postseismic adjustment of geotherm contains the information of the adjustment of local strain status.

关 键 词：地热台网 前兆观测 汶川地震 同震响应 震后调整 

分 类 号：P315.7[天文地球—地震学]