地震电磁卫星交变电磁场的数据处理
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摘要
地震电磁卫星的迅速发展也带来了一些相关的研究课题,本文根据地面地震电磁观测中成熟的监测手段和参数,来分析如何根据地震电磁卫星记录的电、磁场分量提取可能与地震电磁异常现象有关的信息.介绍了电磁场时间序列的幅值统计;电磁波谱尤其是自功率谱对噪音干扰敏感,介绍了自功率谱的计算方法;正交电磁场相关度的变化分析方法;空间电磁波平面特征指标求取;以及在简单平面波特征下,提出空间阻抗张量的计算方法.
The rapid developing of earthquake electromagnetism satellite also requires some related areas to be studied.According to the well-done methods and parameters in the processs of ground earthquake electromagnism monitoring,we analyze the possibility of extracting possible abnormal earthquake information by analysis the electromagnetic time series recorded by satellite.Firstly,to analyze the statistic characteristics of electromagnetic signal.Secondly,the autospectra is much more sensitive to noise,so to introduce the formula of autospectra.Thirdly,the coherence is also a sensitive parameter to noise,the orthogonal electrical and magnetic fields have coherence value close to 1,while the orthogonal magnetic fields have coherence value close to 0,both values will change much by noise.Forthly,the electromagnetic planarity is an important parameter to analyze the spatial electromagnetic fields,the electromagnetic planarity index is introduced.Fifthly,as the resistance tensor is a very important parameter in magnetitellurics,it's also the same with electromagnic fields recorded by earthquake electromagnetism satellite,and the space resistance tensor is also introduced.
The rapid developing of earthquake electromagnetism satellite also requires some related areas to be studied.According to the well-done methods and parameters in the processs of ground earthquake electromagnism monitoring,we analyze the possibility of extracting possible abnormal earthquake information by analysis the electromagnetic time series recorded by satellite.Firstly,to analyze the statistic characteristics of electromagnetic signal.Secondly,the autospectra is much more sensitive to noise,so to introduce the formula of autospectra.Thirdly,the coherence is also a sensitive parameter to noise,the orthogonal electrical and magnetic fields have coherence value close to 1,while the orthogonal magnetic fields have coherence value close to 0,both values will change much by noise.Forthly,the electromagnetic planarity is an important parameter to analyze the spatial electromagnetic fields,the electromagnetic planarity index is introduced.Fifthly,as the resistance tensor is a very important parameter in magnetitellurics,it's also the same with electromagnic fields recorded by earthquake electromagnetism satellite,and the space resistance tensor is also introduced.
引文
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[13]钱家栋.与大震孕育过程有关的地电阻率变化研究[J].中国地震,1993,9(4):341~350.
[14]王书明,林长佑,陈军营,等.大地电磁地震前兆多参量综合分析[J].西北地震学报,2002,24(1):72~77.
[15]杨长福,林长佑.用大地电磁法研究构造走向及维性特征[J].西北地震学报,2002,24(1):65~71.
[16]刘宝勤,朱佐全,贾政,等.天水地区大地电磁测量及深部电性结构[J].西北地震学报,1995,17(4):70~78.
[17]张云琳,刘晓玲,安海静,等.MT重复测量在地震中短期预报中的应用-祁连山中段MT剖面监测研究[J].地球物理学报,1994,37(2):200~210.
[18]赵国泽,刘国栋,詹艳,等.张北-尚义地震区及其邻区地壳上地幔结构[J].地震地质,1998,20(2):155~162.
[19]杜学彬,马占虎,叶青,等.与强地震有关的视电阻率各向异性变化[J].地球物理学进展,2006,21(1):93~100.
[20]Prot O,Santolik O,Trotignon J G,et al.An entropy regu-larization method applied to the identification of wave distri-bution function for an ELF hiss event[J],Journal of Geo-physical Research,2006,111:6213~6213.
[21]Santolik O,Nemec F,meca,Parrot M,et al.Analysismethods for multi-component wave measurements on boardthe DEMETER spacecraft[J].Planetary and Space Science,2006,54:512~527.
[22]Santolik O,Parrot M,Lefeuvre F.Singular value decompo-sition methods for wave propagation analysis[J].Radio Sci-ence,2003,38(1):1010~1022.
[23]考夫曼A A,凯勒G V著.大地电磁测深法[M].刘国栋等译.北京:地震出版社,1987:447~473.
[24]刘国栋,陈乐寿.大地电磁测深研究[M].北京:地震出版社,1984:1~25.
[2]李琪,林云芳,曾小苹.应用小波变换提取张北地震的震磁效应[J].地球物理学报,2006,49(3):855~863.
[3]陈智勇,杜晓泉,徐东红,等.大地震前电磁辐射信息的观测研究[J].地震学报,1993,15(1):83~90.
[4]黄清华.电磁学手法在地震研究中的应用[J].石油地球物理勘探,2004,39(增):75~84.
[5]苏巍,刘财,陈晨.震电效应理论及其研究进展[J].地球物理学进展,2006,21(2):379~385.
[6]关华平,刘桂萍.震前电磁辐射异常与地震关系研究[J].地震学报,1995,17(2):237~246.
[7]许绍燮.地震预报发展战略在于创新[J].国际地震动态,2005,(5):30~33.
[8]王继军,赵国泽,詹艳,等.中国地震电磁现象的观测与研究:地震预测中的电磁卫星[J].大地测量与地球动力学,2005,25(2):11~21.
[9]卓贤军,赵国泽,王继军,等.地震预测中的电磁卫星[J].大地测量与地球动力学,2005,25(2):1~5.
[10]Parrot M,Berthelier J J,Lebreton J P,et al.Examples ofunusual ionospheric observations made by the DEMETERsatellite over seismic regions[J].Physics and Chemistry ofthe Earth,2006,(31):486~495.
[11]Molchanov O,Rozhnoi A,Solovieva M,et al.Global diag-nostics of the ionospheric perturbations related to the seismicactivity using the VLF radio signals collected on the DEME-TER satellite[J].Natural Hazards and Earth System Sci-ences,2006,(6):745~753.
[12]关华平,陈智勇.地震与电磁辐射关系的定量分析[J].地震,1996,16(2):168~176.
[13]钱家栋.与大震孕育过程有关的地电阻率变化研究[J].中国地震,1993,9(4):341~350.
[14]王书明,林长佑,陈军营,等.大地电磁地震前兆多参量综合分析[J].西北地震学报,2002,24(1):72~77.
[15]杨长福,林长佑.用大地电磁法研究构造走向及维性特征[J].西北地震学报,2002,24(1):65~71.
[16]刘宝勤,朱佐全,贾政,等.天水地区大地电磁测量及深部电性结构[J].西北地震学报,1995,17(4):70~78.
[17]张云琳,刘晓玲,安海静,等.MT重复测量在地震中短期预报中的应用-祁连山中段MT剖面监测研究[J].地球物理学报,1994,37(2):200~210.
[18]赵国泽,刘国栋,詹艳,等.张北-尚义地震区及其邻区地壳上地幔结构[J].地震地质,1998,20(2):155~162.
[19]杜学彬,马占虎,叶青,等.与强地震有关的视电阻率各向异性变化[J].地球物理学进展,2006,21(1):93~100.
[20]Prot O,Santolik O,Trotignon J G,et al.An entropy regu-larization method applied to the identification of wave distri-bution function for an ELF hiss event[J],Journal of Geo-physical Research,2006,111:6213~6213.
[21]Santolik O,Nemec F,meca,Parrot M,et al.Analysismethods for multi-component wave measurements on boardthe DEMETER spacecraft[J].Planetary and Space Science,2006,54:512~527.
[22]Santolik O,Parrot M,Lefeuvre F.Singular value decompo-sition methods for wave propagation analysis[J].Radio Sci-ence,2003,38(1):1010~1022.
[23]考夫曼A A,凯勒G V著.大地电磁测深法[M].刘国栋等译.北京:地震出版社,1987:447~473.
[24]刘国栋,陈乐寿.大地电磁测深研究[M].北京:地震出版社,1984:1~25.
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