青海地区钻孔应变同震响应特征分析  

CHARACTERISTICS ANALYSIS ON COSEISMIC RESPONSE OF BOREHOLE STRAIN IN QINGHAI AREA

作　　者：张敏[1] 赵燕杰[2] 文勇[1] 孟鑫[1] 

机构地区：[1]青海省地震局德令哈地震台,青海德令哈817000 [2]青海省地震局,青海西宁810000

出　　处：《高原地震》2014年第3期52-56,13,共6页Plateau Earthquake Research

基　　金：中国地震局监测;预测;科研三结合课题:青海地区钻孔应变同震响应特征分析

摘　　要：收集了青海6个钻孔应变台站资料,对青海玉树7.1级地震、日本9.0级地震和四川芦山7.0级地震进行同震响应和震后效应特征进行对比分析,得出的结论是钻孔应变同震响应出现阶变的起始时间与地震波到达的时间基本一致,属于同震变化,应变阶跃随震源方位、震级等因素有较好的比例关系。The strain station data in 6 boreholes in Qinghai are collected,the characteristics of earthquake response and earthquake effect of Qinghai Yushu M7. 1 earthquake,Japan M9. 0 earthquake and Sichuan Lushan M7. 0 earthquake are analyzed,and the results showed the order of the start time and the seismic wave arrival time in accordance with the seismic response of borehole strain,which belongs to the coseismic strain step,factors such as strain step along with the source azimuth magnitude proportion has good relations.

关 键 词：钻孔应变 青海地区 同震响应 

分 类 号：P315.727[天文地球—地震学]