【摘要】 利用NOAA/AVHRR资料,通过遥感图象处理、地表温度反演、空间统计分析等技术方法,分析姚安6.5级地震震前的热红外温度变化。对计算结果的单点采样比较和面域剖面分析表明,2000年1月15日姚安6.5级地震前,震区出现了明显的热红外持续增温;震前两天热红外温度与地震平静时段的同期同区域温度相比出现了大面积的3℃～5℃的正值区域;与同期温度背景场相比,在断裂附近震区增温仍较明显。研究还表明,将卫星热红外辐射技术用于实际地震预报还需要解决两个重要问题:一是资料的时间连续性问题;二是热红外异常与地震的孕育、发生的定量关系问题。更多还原

【Abstract】 s: By split window algorithm, land surface temperature was retrieved from NOAA/AVHRR data. The results of comparison of sampling points and surface section analysis showed that there was thermal infrared increasing obviously and lasting a few days before the Yaoan earthquake Ms=6.5. The results also showed that there were two problems needed to be resolved before forecasting earthquake by satellite thermal infrared techniques. They were temporal continuous of data and quantity relation of abnormal thermal infrared temperature and the earthquake.更多还原