德令哈地应力强震短期异常特征研究  

STUDY ON STRONG EARTHQUAKE SHORT PEIOD ANOMALOUS CHARACTERISTICS OF STRESS IN DELINGHA AREA

作　　者：严承萍 武斌 张晓清[3] 

机构地区：[1]青海省海东地震局,青海平安810600 [2]青海省祁连县地震办公室,青海祁连810400 [3]青海省地震局,青海西宁810001

出　　处：《高原地震》2006年第2期14-21,共8页Plateau Earthquake Research

基　　金：青海-江苏联合共建课题--2000年9月12日兴海6.6级地震震源破裂过程

摘　　要：德令哈地应力自1997年投入观测以来,在青海及其邻近地区发生了4次Ms≥5.9级地震,在这4次地震前德令哈地应力观测资料显示出明显的短临异常。本文使用形态分析和斜率法对这几次异常进行了分析,对其短临异常特征结合地震的破裂类型进行了初步总结。Four earthquakes with Ms ≥ 5.9 occurred in Qinghai and its neighboring area since 1997. The ground stress data recorded by Delingha station are obvious abnormal before those events, and their characteristics and fracture types are analyzed by the methods of shape and slope analysis.

关 键 词：地应力 地震短临异常 青海 中强地震 

分 类 号：P315.727[天文地球—地震学]