基于GPS数据的震前电离层异常分析
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摘要
首先利用日本及周边区域IGS站提供的GPS观测数据,计算得到了测站上空垂直总电子含量VTEC的时间序列。采用滑动平均法与非滑动平均法两种统计学方法针对日本境内某震例进行了震前VTEC值异常分析,数值结果表明地震震前出现了电离层异常现象。此外,为了探讨异常情况与地震的相关性,进一步分析了电离层异常的全球空间分布。最后,通过对比两种异常检验方法的分析结果可知,两种方法分析结果的总体趋势一致,验证了本文结果的可靠性。
引文
[1]陈鹏.GNSS电离层层析及震前电离层异常研究[J].测绘学报,2013,42(3):474-474.
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[7]PULINETS S A,BONDUR V G,TSIDILINA M N,et al.Verification of the Concept of Seismoionospheric Coupling under Quiet Heliogeomagnetic Conditions:Using the Wenchuan(China)Earthquake of May 12,2008,as an Example[J].Geomagnetism and Aeronomy,2010,50(2):231-242.
[8]马新欣.利用GPS数据研究地震与电离层TEC异常[D].成都:成都理工大学,2009.
[9]DAUTERMANN T,CALAIS E,HAASE J,et al.Investigation of Ionospheric Electron Content Variations before Earthquakes in Southern California,2003—2004[J].Journal of Geophysical Research,2007,112,B02106.DOI:10.1029/2006JB004447.
[10]李建勇.利用GPS数据研究地震电离层TEC异常[D].北京:中国地震局地震预测研究所,2011.
[2]CALAIS E,MINSTER J B.GPS Detection of Ionospheric TEC Perturbations Following the January 17,1994,Northirdge Earthquake[J].Geophysical Research Letters,1995,22(9):1045-1048.
[3]LIU J Y,CHEN Y I,CHUO Y J,et al.Variations of Ionospheric Total Electron Content during the Chi-Chi Earthquake[J].Geophysical Research Letters,2001,28(7):1383-1386.
[4]LIU J Y,CHUO Y J,SHAN S J,et al.Pre-earthquake Ionospheric Anomalies Registered by Continuous GPS TEC Measurements[J].Annales Geophysicae,EGU,2004,22(5):1585-1593.
[5]YU T,MAO T,WANG Y G,et al.Study of the Ionospheric Anomaly before the Wenchuan Earthquake[J].Chinese Science Bulletin,2009,54(6):1080-1086.
[6]LIU J Y,CHEN Y I,CHEN C H,et al.Seismoionospheric GPS Total Electron Content Anomalies Observed before the 12 May 2008 Mw7.9 Wenchuan Earthquake[J].Journal of Geophysical Research:Space Physics(1978—2012),2009,114(A4).DOI:10.1029/2008JA013698.
[7]PULINETS S A,BONDUR V G,TSIDILINA M N,et al.Verification of the Concept of Seismoionospheric Coupling under Quiet Heliogeomagnetic Conditions:Using the Wenchuan(China)Earthquake of May 12,2008,as an Example[J].Geomagnetism and Aeronomy,2010,50(2):231-242.
[8]马新欣.利用GPS数据研究地震与电离层TEC异常[D].成都:成都理工大学,2009.
[9]DAUTERMANN T,CALAIS E,HAASE J,et al.Investigation of Ionospheric Electron Content Variations before Earthquakes in Southern California,2003—2004[J].Journal of Geophysical Research,2007,112,B02106.DOI:10.1029/2006JB004447.
[10]李建勇.利用GPS数据研究地震电离层TEC异常[D].北京:中国地震局地震预测研究所,2011.
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