利用小波包方法分析新疆南部地震前长波辐射异常
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摘要
以新疆南部为主要研究区域,选取2003—2010年M_S>5.0典型震例进行分析,将长波辐射日值数值与历年日值数据均值相减,排除年际数据波动干扰,采用小波包方法,对均一化处理后的差值进行分解重构,发现新疆南部地区地震前小波包重构信息均有不同程度的能量衰减现象,且能量衰减时间长短与地震震级之间存在一定对应关系。该现象可以作为地震前兆异常信息参考,为地震预报提供辅助监测手段。
Chinese scholars have been searching the relationship between thermal radiation abnormity before earthquake for a long time,through a lot of example analysis research.They fully explain the feasibility of this method.In this paper,I select several more than 5.0 magnitude earthquakes in south Xinjiang over the last ten years for analysis,and put ereryday's longwave radiation datum substracted the mean.This will exclude the fluctuation interference,and then I use wavelet packet to decompose and reconstruct data difference and find some degrees of energy attenuation in most earthquakes in south Xinjiang.There is some correspond realtion between the time of energy attenuation and the magnitude of earthquakes.These phenomena maybe serve as a kind of reference before earthquake.It also provide a new auxiliary method in monitoring earthquakes
Chinese scholars have been searching the relationship between thermal radiation abnormity before earthquake for a long time,through a lot of example analysis research.They fully explain the feasibility of this method.In this paper,I select several more than 5.0 magnitude earthquakes in south Xinjiang over the last ten years for analysis,and put ereryday's longwave radiation datum substracted the mean.This will exclude the fluctuation interference,and then I use wavelet packet to decompose and reconstruct data difference and find some degrees of energy attenuation in most earthquakes in south Xinjiang.There is some correspond realtion between the time of energy attenuation and the magnitude of earthquakes.These phenomena maybe serve as a kind of reference before earthquake.It also provide a new auxiliary method in monitoring earthquakes
引文
戴勇,丁风和,韩晓明.基于小波包分析的0LR地震异常信息提取初探[J].地震,2009,29(3):62-66.
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刘德富,罗灼礼,彭克银.强烈地震前的OLR异常现象[J].地震,1997,17(2):126-132.
刘泽民.小波分析在数字地震资料中的应用[J].地震地磁观测与研究,2004,25(1):88-91.
聂永安,崔晓峰,陈宇坤.用小波变换进行信号特征检测的原理与方法[J].地震地磁观测与研究,1999,20(3):25-29.
唐晓初.小波分析及其应用[M].重庆大学出版社,2006.
王亚丽,陈桂华,康春丽,等.利用小波包分析进行地震相关热红外辐射异常信息监测[J].地球物理学进展,2008,23(2)368-374.
康春丽,陈正位,陈立泽,等.昆仑山口西8.1级地震的卫星热红外前兆特征分析[J].西北地震学报,2003,25(1):12-15.
刘德富,康春丽.地球长波辐射(OLR)遥感与重大自然灾害预测[J].地学前缘,2003,10(2):427-435.
刘德富,罗灼礼,彭克银.强烈地震前的OLR异常现象[J].地震,1997,17(2):126-132.
刘泽民.小波分析在数字地震资料中的应用[J].地震地磁观测与研究,2004,25(1):88-91.
聂永安,崔晓峰,陈宇坤.用小波变换进行信号特征检测的原理与方法[J].地震地磁观测与研究,1999,20(3):25-29.
唐晓初.小波分析及其应用[M].重庆大学出版社,2006.
王亚丽,陈桂华,康春丽,等.利用小波包分析进行地震相关热红外辐射异常信息监测[J].地球物理学进展,2008,23(2)368-374.
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