2011年9月18日印度锡金里氏6.8级地震热红外变化  

THERMAL INFRARED CHANGES OF INDIA'S SIKKIM M_L6.8 EARTHQUAKE ON SEPTEMBER 18,2001

作　　者：张颖[1] 张元生[2,3] 魏从信[2] 查楠[1] 

机构地区：[1]辽宁省地震局,辽宁沈阳110034 [2]中国地震局地震预测研究所兰州创新基地,甘肃兰州730000 [3]地球物理国家野外科学观测研究站,甘肃兰州730000

出　　处：《防灾减灾学报》2012年第2期24-28,共5页Journal of Disaster Prevention And Reduction

基　　金：高分辨率对地观测重大专项资助(E0311/1112/JD3-1);中国地震局兰州地震研究所青年基金资助(2011Q04)

摘　　要：选用静止卫星红外遥感亮温资料,对2011年9月18日印度锡金里氏6.8级地震热红外资料进行研究,并对比分析该地区2006年以来热红外异常变化,研究结果发现该区大地震之前存在明显的异常变化,相对功率谱最大值达到12,震前42天出现异常,9月15日前后异常幅度达到最大值,显示出明显区域性特征。By using the satellite IR brightness temperature sensing data, the earthquake thermal infrared data of India＇s Sikkim ML6.8 earthquake on September 18,2011 has been studied. Based on the comparative analysis among the thermal infrared abnormal changes of this region since 2006, it was found that there are significant abnormal changes before the earthquake and the relative power spectral maximum is up to 12. The abnormalities appeared 42 days before the earthquake. It has reached the maximum after September 15, which showed a clear regional characteristic of abnormalities.

关 键 词：强烈地震 卫星红外遥感 热红外异常 小波变换 功率谱 

分 类 号：P315.63[天文地球—地震学]