青藏高原北部地区缺震特征及其短期预报意义  

CHARACTERISTICS OF SEISMICITY GAPS AND SHORT-TERM EARTHQUAKE PREDICTION IN NORTH AREA OF QINGHAI-XIZANG PLATEAU

作　　者：陈玉华[1] 张恩育[1] 

机构地区：[1]青海省地震局,青海西宁810001

出　　处：《高原地震》2003年第2期10-16,共7页Plateau Earthquake Research

基　　金：十五"地震科技攻关项目2001BA601B01-03-01资助。

摘　　要：以活动地块为单元,研究了青藏高原北部地区1985年以来的缺震异常与中强地震的对应关系,认为青藏高原北部地区缺震异常具有一定的地震预报效能,尤其是在祁连地块、柴达木地块及共和地块中的应用价值较高,可作为该区中期和短期地震预报的判据之一。多个地块同步出现缺震异常意味着某一地块6级以上地震孕育的可能。The relation between anomalies of seismicity gaps and medium-strong earthquakes in north area of Qinghai-Xizang Plateau since 1985 is studied in the paper,and this area is divided into five blocks.The result shows that the anomalies of seismicity gap can predict some earthquakes in this area,especially in Qilian,Caidamu and Gonghe blocks,and this can be regarded as one of critera of middle and short-term earthquake prediction.Synchronous anomalies of seismicity gaps in some blocks may mean that it is possible to prepare the earthquake with Ms≥60 in the area.

关 键 词：青藏高原北部 缺震异常 短期预报 

分 类 号：P315.75[天文地球—地震学]