中强地震前的长波辐射异常震例研究
|
摘要
文章利用NOAA提供的1°×1°长波辐射产品对2008年发生在我国的三次地震(2008年8月25日仲巴6.8级地震、5月12日汶川8.0级地震和3月21日于田7.3级地震)进行了研究。通过滑动平均,标准方差阈值等方法分析了各地震震前2个月和震后2个月的长波辐射日数据的时间序列,分析结果表明在震前40余天到震前几天均出现不同程度的长波辐射异常,这些异常可能与地震相关,并且异常的幅度和震级不是简单的线性关系。
Three medium to large earthquakes happened in China in 2008,including the 25 August Zhongba MS6.8 earthquake,the May 12 Wenchuan MS8.0 earthquake and 21 March Yutian MS7.3 earthquake.These three earthquakes have been studied using outgoing longwave radiation(OLR) 1°×1° grid data provided by NOAA(National Oceanic and Atmospheric Administration).The daily OLR data two months before and after the seismic events have been analyzed using moving average,standard threshold and so on.It is shown that the OLR anomalies have been found about 40 days to several days before the seismic events.These anomalies may have some relationship with the seismic events,but the relationship between the abnormal magnitude and earthquake magnitude were not simply linear.
Three medium to large earthquakes happened in China in 2008,including the 25 August Zhongba MS6.8 earthquake,the May 12 Wenchuan MS8.0 earthquake and 21 March Yutian MS7.3 earthquake.These three earthquakes have been studied using outgoing longwave radiation(OLR) 1°×1° grid data provided by NOAA(National Oceanic and Atmospheric Administration).The daily OLR data two months before and after the seismic events have been analyzed using moving average,standard threshold and so on.It is shown that the OLR anomalies have been found about 40 days to several days before the seismic events.These anomalies may have some relationship with the seismic events,but the relationship between the abnormal magnitude and earthquake magnitude were not simply linear.
引文
[1]强祖基,徐秀登,赁常恭.卫星热红外异常-临震前兆[J].科学通报,1990,35(17):1 324-1 327.
[2]强祖基,赁常恭,李玲芝,等.卫星热红外图像亮温异常短临震兆[J].中国科学D辑,1998,28(6):564-573.
[3]刘放,辛华,任越霞,等.MODIS亮温增温异常点比值的时序分析方法及其在台湾一些5级以上地震前的异常变化[J].地震地质,2007,29(1):172-179.
[4]康春丽,刘德富,陈艳,等.长波辐射(OLR)信息预测华北地震的方法研究[J].西北地震学报,2006,28(1):59-63.
[5]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.
[6]刘德富.台湾集集强震前的卫星遥感长波辐射场变异分析[J].地球信息科学,2000,2(1):33-36.
[7]陈梅花,邓志辉,杨竹转,等.2004年印度尼西亚9级大地震前的潜热通量异常[J].科学通报,2006,15(1):118-120.
[8]Ouzounov D,Freund F.Mid-infrared emission prior to strong earthquakes analyzed by remote sens-ing data[J].Advances in Space Research,2004,33(3):268-273.
[9]Ouzounov D,Bryant N,Logan T,et al.Satellite thermal IR phenomena associated with some of themajor earthquakes in 1999—2003[J].Physics and Chemistry of the Earth,2006,31:154-163.
[10]Dimitar Ouzounov,Defu Liu,Kang Chunli,et al.Outgoing long wave radiation variability from IRsatellite data prior to major earthquakes[J].Tectonophysics,2007,431:211-220.
[11]Pulinets S,Ouzounov D,Ciraolo L,et al.Thermal,atmospheric and ionospheric anomalies aroundthe time of ColimaM7.8 Earthquake of January 21 2003[J].Annales Geophysicae,2006a,24:835-849.
[12]Pulinets S,Ouzounov D,Karelin A,et al.The physical nature of thermal anomalies observed beforestrong earthquakes[J].Physics and Chemistry of the Earth,2006b,31:143-153.
[13]Tronin A,Hayakawa M,Molchanov O A.Thermal IR satellite data application for earthquake re-search in Japan and China[J].Journal of Geodynamics,2002,33:519-534.
[14]S Dey,Singh R P.Surface latent heat flux as an earthquake precursor[J].Natural Hazards andEarth System Sciences,2003,3:749-755.
[15]Liebmann B,Smith C A.Description of a Complete(Interpolated)Outgoing Longwave RadiationDataset[J].Bulletin of the American Meteorological Society,1996,77:1 275-1 277.
[2]强祖基,赁常恭,李玲芝,等.卫星热红外图像亮温异常短临震兆[J].中国科学D辑,1998,28(6):564-573.
[3]刘放,辛华,任越霞,等.MODIS亮温增温异常点比值的时序分析方法及其在台湾一些5级以上地震前的异常变化[J].地震地质,2007,29(1):172-179.
[4]康春丽,刘德富,陈艳,等.长波辐射(OLR)信息预测华北地震的方法研究[J].西北地震学报,2006,28(1):59-63.
[5]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.
[6]刘德富.台湾集集强震前的卫星遥感长波辐射场变异分析[J].地球信息科学,2000,2(1):33-36.
[7]陈梅花,邓志辉,杨竹转,等.2004年印度尼西亚9级大地震前的潜热通量异常[J].科学通报,2006,15(1):118-120.
[8]Ouzounov D,Freund F.Mid-infrared emission prior to strong earthquakes analyzed by remote sens-ing data[J].Advances in Space Research,2004,33(3):268-273.
[9]Ouzounov D,Bryant N,Logan T,et al.Satellite thermal IR phenomena associated with some of themajor earthquakes in 1999—2003[J].Physics and Chemistry of the Earth,2006,31:154-163.
[10]Dimitar Ouzounov,Defu Liu,Kang Chunli,et al.Outgoing long wave radiation variability from IRsatellite data prior to major earthquakes[J].Tectonophysics,2007,431:211-220.
[11]Pulinets S,Ouzounov D,Ciraolo L,et al.Thermal,atmospheric and ionospheric anomalies aroundthe time of ColimaM7.8 Earthquake of January 21 2003[J].Annales Geophysicae,2006a,24:835-849.
[12]Pulinets S,Ouzounov D,Karelin A,et al.The physical nature of thermal anomalies observed beforestrong earthquakes[J].Physics and Chemistry of the Earth,2006b,31:143-153.
[13]Tronin A,Hayakawa M,Molchanov O A.Thermal IR satellite data application for earthquake re-search in Japan and China[J].Journal of Geodynamics,2002,33:519-534.
[14]S Dey,Singh R P.Surface latent heat flux as an earthquake precursor[J].Natural Hazards andEarth System Sciences,2003,3:749-755.
[15]Liebmann B,Smith C A.Description of a Complete(Interpolated)Outgoing Longwave RadiationDataset[J].Bulletin of the American Meteorological Society,1996,77:1 275-1 277.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心