张北6.2级地震前的卫星热红外异常  

SATELLITE THERMAL INFRARED ANOMALY BEFORE THE ZHANGBEI EARTHQUAKE MS=6.2

作　　者：吕琪琦[1] 丁鉴海[1] 崔承禹[2] 张晋开[2] 柳钦火[2] 

机构地区：[1]中国地震局分析预报中心,中国北京100036 [2]中国科学院遥感应用研究所,中国北京100101

出　　处：《地震》1998年第3期240-244,共5页Earthquake

基　　金：国防科学技术工业委员会资助项目!( Y95-1 0 )的部分成果

摘　　要：利用张北地震前 1个月华北北部 (37～ 42°N,1 1 3～ 1 1 9°E)的气象卫星 NOAA/ AVHRR热红外遥感资料 ,提取震前热红外温度异常 ,研究其时空变化的过程和特征 ,并对热红外温度异常与地震的关系进行初步的探讨。结果表明 ,在张北地震前 1 3天沿张家口 -渤海断裂带确有显著的热红外温度异常出现。异常区域呈条带状 ,且与 NW向地质构造一致 ;温度异常的动态变化可大致分为初始、平缓发展和临震加速 3个阶段。By using the meteorological satellite NOAA/ AVHRR thermal infrared remote sensing data from the northern China( 37～ 4 2°N,1 1 3～ 1 1 9°E) one month before the Zhangbei earthquake,the authors extracted the thermal infrared temperature anomaly,studied the process and features of its temporal and spatial variation,and made a preliminary discus- sion on the relationship between the earthquake and the thermal infrared temperature anomaly.The results show that distinguishable thermal infrared temperature anomaly oc- curred along the Zhangjiakou-Bohai Sea fault zone1 3days before the earthquake.The anomaly is strip in shape and accords with the NW-striking geological tectonics;the pro- cess ofits variation can be approximately divided into three stages:initialization,stable in- crease and acceleration.The thermal infrared temperature anomaly is used as an impend- ing precursor and implies the probability of the occurrence of a strong earthquake.

关 键 词：遥感 临震前兆 热红外温度异常 地震预报 震级 

分 类 号：P315.7[天文地球—地震学]