汶川M_S8.0级大震前天基与陆基电场资料联合应用研究
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摘要
利用边际谱方法对2008年5月12日四川汶川地震前天基和陆基电场变化情况进行了联合分析研究,结果表明:(1)空间电场方面,由重复轨道和连续轨道电场边际谱演化看出,电离层电场从2008年4月27日左右开始,其边际谱出现了明显的增强现象(增大1～2个量级),这种现象一直持续到汶川地震发生.(2)陆基电场方面,中法合作的松山台从4月25日～29日开始出现电场边际谱增强现象(增大2个量级),成都台、陇南台和天水台在4月10日～14日开始出现了边际谱增强现象(增大2个量级),天水台和陇南台边际谱增强现象出现时间与成都台相差不大,但结束时间不完全相同,松山台、天水台的结束时间要早于陇南台和成都台.(3)陆基和空间电场边际谱出现增强现象的时间来看,二者有较好的一致性.
We studied the changes of the electric field before the Wenchuan M_S8.0 earthquake of 2008 using both space-based and ground-based observational data and the method of marginal spectrum.The evolution of marginal spectrum of the electric field from the repeat orbits and continuous orbits reveals that the marginal spectrum of the electric field in the ionosphere had a remarkable increase(about 1～2 orders of magnitude) from the 27th April,2008 to the time when the Wenchuan earthquake happened.For the evolution of marginal spectrum of the electric field from the ground-based data,the marginal spectrum of Songshan station of Sino-French cooperation began to enhance(increased by 2 orders of magnitude) from 25th～29th,April, 2008.Such a phenomenon appeared at Chengdu,Longnan and Tianshui stations(increased by 2 orders of magnitude) from 10th～14th,April,2008.Despite that the marginal spectrum enhancement was identical at Chengdu,Longnan and Tianshui stations,but it ended at different times.This process ended earlier at the Songshan and Tianshui stations than the Chengdu and Longnan stations.It seems that the enhancement of marginal spectra of both the ground and space electric fields happened at a roughly same time.
We studied the changes of the electric field before the Wenchuan M_S8.0 earthquake of 2008 using both space-based and ground-based observational data and the method of marginal spectrum.The evolution of marginal spectrum of the electric field from the repeat orbits and continuous orbits reveals that the marginal spectrum of the electric field in the ionosphere had a remarkable increase(about 1～2 orders of magnitude) from the 27th April,2008 to the time when the Wenchuan earthquake happened.For the evolution of marginal spectrum of the electric field from the ground-based data,the marginal spectrum of Songshan station of Sino-French cooperation began to enhance(increased by 2 orders of magnitude) from 25th～29th,April, 2008.Such a phenomenon appeared at Chengdu,Longnan and Tianshui stations(increased by 2 orders of magnitude) from 10th～14th,April,2008.Despite that the marginal spectrum enhancement was identical at Chengdu,Longnan and Tianshui stations,but it ended at different times.This process ended earlier at the Songshan and Tianshui stations than the Chengdu and Longnan stations.It seems that the enhancement of marginal spectra of both the ground and space electric fields happened at a roughly same time.
引文
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[2]Bleier T,Frend F.Impending earthquake have been sending us warning signals and people are starting to listen.IEEE Spectrum Int.,2005,12:17-21
[3]赵国泽,陈小斌,蔡军涛.电磁卫星和地震预测.地球物理学进展,2007,22(3):667-673 Zhao G Z,Chen X B,Cai J T.Electromagnetic observation by satellite and earthquake prediction.Progress in Geophysics(in Chinese),2007,22(3):667-673
[4]曾中超,张蓓,方广有等.利用DEMETER卫星数据分析汶川地震前的电离层异常.地球物理学报,2009,52(1): 11-19 Zeng Z C,Zhang B,Fang G Y,et al.The analysis of ionospheric variations before Wenchuan earthquake with DEMETER data.Chinese J.Geophys.(in Chinese),2009, 52(1):11-19
[5]钱复业,赵壁如,钱卫等.汶川8.0级地震HRT波地震短临波动前兆及HRT波地震短临预测方法——关于实现强震短临预测可能性的讨论.中国科学D辑:地球科学,2009, 39(1):11-23 Qian F Y,Zhao B R,Qian W,et al.Impending HRT wave precursors to the Wenchuan M_s8.0 earthquake and methods of earthquake impending prediction by using HRT wave. Science in China-Series D,2009,52(10):1572-1584
[6]何宇飞,杨冬梅,陈化然等.DEMETER卫星探测到可能与汶川地震有关的地面VLF发射站信号的信噪比变化.中国科学D辑:地球科学,2009,39(4):403-412 He Y F,Yang D M,Chen H R,et al.SNR changes of VLF radio signals detected onboard the DEMETER satellite and their possible relationship to the Wenchuan earthquake. Science in China-Series D,2009,52(6):754-763
[7]范莹莹,杜学彬,Zlotnicki J等.汶川M_s8.0大震前的电磁现象.地球物理学报,2010,53(12):2887-2898 Fan Y Y,Du X B,Zlotnicki J,et al.The electromagnetic phenomena before the M_s8.0 Wenchuan earthquake.Chinese J.Geophys.(in Chinese),2010,53(12):2887- 2898
[8]高署德,汤吉,杜学彬等.汶川8.0级地震前后电磁场的变化特征.地球物理学报,2010,53(3):512-525 Gao S D,Tang J,Du X B,et al.The change characteristics of electromagnetic field before to after Wenchuan 8.0 earthquake.Chinese J.Geophys.(in Chinese),2010,53 (3):512-525
[9]李新乔,马宇蒨,王焕玉等.空间电磁卫星的粒子探测与汶川地震.地球物理学报,2010,53(10):2337-2344 Li X Q,Ma Y Q,Wang H Y,et al.Observation of particle on space electro-magnetic satellite during Wenchuan earthquake.Chinese J.Geophys.(in Chinese),2010,53 (10):2337-2344
[10]朱涛,王兰炜.DEMETER卫星观测到的与汶川地震有感的LF电场异常.地球物理学报,2011,54(3):717-727 Zhu T,Wang L W.LF electric field anomalies related to Wenchuan earthquake observed by DEMETER satellite. Chinese J.Geophys.(in Chinese),2011,54(3):717-727
[11]Huang N E,Shen Z,Long S R,et al.The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis.Proceeding of the Royal Society of London,1998,545:903-995
[12]Huang N E,Shen Z,Steven R L.A new view of nonlinear water waves:the Hilbert spectrum.Annu.Rev.Fluid Mech.,1999,31:417-457
[13]Huang N E,Wu M C,Long S R,et al.A confidence limit for the empirical mode decomposition and Hilbert spectral analysis.Proceeding of the Royal Society of London,2003, 459(2037):2317-2345
[14]周挚,山秀明,张立等.基于HHT提取昆明、下关重力固体潮的地震前兆信息.地球物理学报,2008,51(3):836- 844 Zhou Z,Shan X M,Zhang L,et al.The gravity tide of Kunming & Xiaguan based on the HHT.Chinese J.Geophys. (in Chinese),2008,51(3):836-844
[15]陈学华,贺振华,黄德济.地震资料的高阶伪希尔伯特变换边缘检测.地球物理学进展,2008,23(4):1106-1110 Chen X H,He Z H,Huang D J.Seismic data edge detection based on higher-order pseudo Hilbert transform.Progress in Geophysics(in Chinese),2008,23(4):1106-1110
[16]杨培杰,印兴耀,张广智.希尔伯特-黄变换地震信号时频分析与属性提取.地球物理学进展,2007,22(5):1585-1590 Yang P J,Yin X Y,Zhang G Z.Seismic signal timefrequency analysis and attributes extraction based on HHT. Progress in Geophysics(in Chinese),2007,22(5):1585- 1590
[17]石春香,罗奇峰.时程信号的Hilbert-Huang变换与小波分析.地震学报,2003,25(4):398-405 Shi C X,Luo Q F.Hilbert-Huang Transform and wavelet analysis of time history signal.Acta Seismologica Sinica(in Chinese),2003,25(4):398-405
[18]张立,傅容珊,周挚等.基于HHT提取重力固体潮的地震前兆信息.地震学报,2007,29(3):222-226 Zhang L,Fu R S,Zhou Z,et al.Extraction of seismic precursory information from gravity tide at Kunming station based on HHT.Acta Seismologica Sinica(in Chinese), 2007,29(3):222-226
[19]段生全,贺振华,黄德济.HHT方法及其在地震信号处理中的应用.成都理工大学学报(自然科学版),2005,32(4): 396-400 Duan S Q,He Z H,Huang D J.Application of the Hilbert-Huang Transform to the analysis of seismic signal.Journal ??of Chengdu University of Technology(Science & Technology Edition)(in Chinese),2005,32(4):396-400
[20]罗奇峰,石春香.Hilbert-Huang变换理论及其计算中的问题.同济大学学报,2003,31(6):637-640 Luo Q F,Shi C X.Hilbert-Huang transform and several problems in its calculation method.Journal of Tongji University (in Chinese),2003,31(6):637-640
[21]葸晓宇,刘洪.HHT方法在研究地震旋回体中的应用.吉林大学学报(地球科学版),2007,37(3):624-628 Xi X Y,Liu H.The application of HHT method in study of seismic cycle.Journal of Jilin University(Earth Science Edition)(in Chinese),2007,37(3):624-628
[22]公茂盛,谢礼立.HHT方法在地震工程中的应用之初步探讨.世界地震工程,2003,19(3):39-43 Gong M S,Xie L L.Discussion on the application of HHT method to earthquake engineering.World Earthquake Engineering(in Chinese),2003,19(3):39-43
[23]丁康,陈建林,苏向荣.平稳和非平稳振动信号的若干处理方法及发展.振动工程学报,2003,16(1):1-10 Ding K,Chen J L,Su X R.Development in vibration signal analysis and processing methods.Journal of Vibration Engineering(in Chinese),2003,16(1):1-10
[24]仲佑明,秦树人,汤宝平.一种振动信号新变换法的研究.振动工程学报,2002,15(2):233-238 Zhong Y M,Qin S R,Tang B P.Study on a new transform method for vibration signal.Journal of Vibration Engineering (in Chinese),2002,15(2):233-238
[25]安张辉,元丽华,李宁等.HHT方法在地电场数据处理中的应用.地球物理学进展,2010,25(2):525-532 An Z H,Yuan L H,Li N,et al.Discussion on the application of HHT method to geoelectric field data processing.Progress in Geophysics(in Chinese),2010,25 (2):525-532
[26]朱荣,杨冬梅,荆凤等.DEMETER卫星观测到的云南普洱地震前的电离层扰动.地震学报,2008,30(1):76-81 Zhu R,Yang D M,Jing F,et al.Ionospheric perturbations before Pu'er earthquake observed by the satellite DEMETER.Acta Seismologica Sinica(in Chinese),2008, 30(1):76-81
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