长波辐射时空序列剖面中震兆特征的研究  

A STUDY ON ANOMALY CHARACTERISTICS BEFORE EARTHQUAKE IN THE TIME SPACE SEQUENCE SECTIONS OF OUTGOING LONGWAVE RADIATION

作　　者：江志萍[1] 王赞军[1] 严英 

机构地区：[1]青海省地震局

出　　处：《西北地震学报》1998年第3期27-32,共6页Northwestern Seismological Journal

基　　金：地震科学联合基金

摘　　要：做出了３２°～４０°Ｎ，８９°～１０５°Ｅ范围内各经纬度结点１９８９年７月～１９９６年１２月长波辐射（ＯＬＲ）月距平值曲线．将各结点的曲线图按经纬度排列起来，构成ＯＬＲ时空序列剖面图．根据对这些剖面图的分析，研究了强震前ＯＬＲ的变化特征．结果表明，强震前１～４个月震中附近结点ＯＬＲ曲线变化出现异常，表现为反向变化或振荡型．有的地震前异常的空间展布呈条带状．Monthly departure curves of Outgoing Longwave Radiation (OLR) at the intersections of latitude and longitude in a range of 32°～40°N and 89°～105 °E from July,1989～Dec.,1996 are drawn.Analysing these curves,variation characteristics of OLR before strong earthquakes are studied.The results show anomalous variations with opposite direction or oscillation of the OLR curves appear 1～4 months before strong earthquake at the intersections around the epicenter.Anomalous intersections are distributed in the shape of the belt before some earthquakes.

关 键 词：地震前兆 异常特征 长波辐射 时空剖面 

分 类 号：P315.7[天文地球—地震学]