摘要
选取四次典型震例,分别以微波遥感及热红外遥感为研究手段对各发震区的温度进行窗口时间序列扫描,探讨震前陆地表面温度异常特征。研究发现:由热红外遥感及微波遥感反演所得的陆表温度年变形态极为相似,前者特征更为明显;震前并非完全是一个增温过程,有负异常现象存在;大地震的温度异常空间分布特征与断层的展布存在密切关系,温度异常区并非大面积存在,且未呈现明显迁移特征,这一新发现具有明确的物理意义。
Using four typical earthquakes as examples,the temperature-time sequences of each earthquake＇s epifocal area is scanned in small windows using microwave remote sensing and thermal infrared remote sensing,and then surface temperature anomalies before the occurrence of these earthquakes are analyzed.The results show that,although the surface temperatures inverted from satellite thermal infrared and microwave remote sensing has similar change patterns,the former is more obvious.The increase in temperature is not continuous and negative anomalies are also present before the earthquakes.There is a direct correlation between the spatial distribution of the temperature anomalies and faults.The temperature anomaly sections are not large-scale and there were no obvious migrations of the sections.The results of this study are useful for reference in future studies.
出处
《地震工程学报》
CSCD
北大核心
2014年第4期1059-1063,共5页
China Earthquake Engineering Journal
基金
国家自然科学基金(40874029)
国家重大项目(E0311/1112)
关键词
热红外遥感
微波遥感
先进微波探测器(AMSU)
地面温度异常
地震预报.
thermal infrared remote sensing
microwave remote sensing
AMSU（Advanced Microwave Sounding Unit）
abnormity of surface temperature
earthquake
