利用电离层层析技术探测日本9.0级地震前电离层异常
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摘要
利用电离层层析技术对日本Ms9.0地震前21天震中区域附近上空电离层进行了三维重构,并通过2倍标准差方法对反演出的各时刻电离层各格网点电子密度值进行了异常探测。在排除太阳和地磁活动影响后分析得出:2月28日UT14:00—16:00出现的电离层电子密度值异常减小、3月2日UT08:00—14:00、3日UT00:00—06:00和4日UT12:00—20:00出现的电离层电子密度值异常增大极有可能与日本地震有关。
By use of the technology of ionospheric tomography,three-dimension ionospheric electronic density in a time length of 21 days prior to Japan March 11,2011 earthquake were reconstructed over the epicenter area,and the electron density anomaly detection was conducted at all ionosphere grid network points for a specific time period.After excluding the effect of solar and geomagnetic activity,the computational results indicate that the abnormal ionospheric electron density decreased at the Universal Time(UT) of 14:00-16:00 on February 28 and increased at 08:00-14:00 on March 2,00:00-06:00 on March 3,and 12:00-20:00 on March 4.The occurrence of these anomalies is likely a precursor of the Japan Ms9.0 earthquake.
By use of the technology of ionospheric tomography,three-dimension ionospheric electronic density in a time length of 21 days prior to Japan March 11,2011 earthquake were reconstructed over the epicenter area,and the electron density anomaly detection was conducted at all ionosphere grid network points for a specific time period.After excluding the effect of solar and geomagnetic activity,the computational results indicate that the abnormal ionospheric electron density decreased at the Universal Time(UT) of 14:00-16:00 on February 28 and increased at 08:00-14:00 on March 2,00:00-06:00 on March 3,and 12:00-20:00 on March 4.The occurrence of these anomalies is likely a precursor of the Japan Ms9.0 earthquake.
引文
1赵必强,等.震前电离层扰动研究进展及汶川地震前电离层变化[J].科技导报,2008,26(11):30-34.(ZhaoBiqiang,et al.Recent advances on the ionospheric pre-cur-sors of earthquakes and ionospheric variations prior to When-chuan earthquake[J].Review of Science and Technology,2008,26(11):30-34)
2 Zhu Fuying and Wu Yun.Anomalous variations in ionospher-ic TEC prior to the 2011 Japan Ms9.0 earthquake[J].Geod-esy and Geodynamics,2011,2(3):8-11.Doi:10.3724/SP.J1246.2011.00008.
3 Zhu Fuying,Wu Yun and Fu Ningbo.Application of Kalmanfilter in detecting pre-earthquake ionospheric TEC anomaly[J].Geodesy and Geodynamics,2011,2(2):43-47.Doi:10.3724/SP.J.1246.2011.00043.
4 Liu J Y,et al.Seismo-ionosphere signatures prior to Taiwanearthquake[J].Geophysical Research Letters,2000,27:3113-3 116.
5林剑,吴云,祝芙英.震前电离层TEC异常扰动的研究[J].武汉大学学报(信息科学版),2009,34(8):975-
978.(Lin Jian,Wu Yun and Zhu Fuying.Ionosphere TEC a-nomalous disturbance of pre-seismic[J].Geomatics and In-formation Science of Wuhan University,2009,34(8):975-978)
6卓裕荣.电离层地震前兆之研究[D].国立中央大学,2002.(Zhuo Yurong.Study of ionospheric earthquake pre-cursors[D].National Central University,2002)
7张强,等.震前电离层TEC异常分析[J].大地测量与地球动力学,2007,(3):91-96.(Zhang Qiang,et al.On i-onospheric TEC anomaly before earthquake[J].Journal ofGeodesy and Geodynamics,2007,(3):91-96)
8杨剑,吴云,周义炎.基于电离层层析成像技术探测汶川地震前电离层异常[J].大地测量与地球动力学,2011,(1):9-14.(Yang Jian,Wu Yun and Zhou Yiyan.Probe in-to seismo-ionospheric anomaly of Wenchuan earthquakebased on computerized ionospheric tomography[J].Journalof Geodesy and Geodynamics,2011,(1):9-14)
9闻得保.基于GPS的电离层层析算法及其应用研究[D].中国科学院,2007.(Wen Debao.Investigation of GPS-basedionospheric tomographic algorithms and their applications[D].Doctoral Thesis of Chinese Academy of Sciences,2007)
10肖宏波,史小红,王晓颖.电离层层析成像的一种改进算法[J]。西安工业大学学报,2008,28(2):115-118.(Xiao Hongbo,Shi Xiaohong and Wang Xiaoying.Improvedalgorithm for computerized ionospheric tomography[J].Journal of Xi’an Technological University,2008,28(2):115-118)
2 Zhu Fuying and Wu Yun.Anomalous variations in ionospher-ic TEC prior to the 2011 Japan Ms9.0 earthquake[J].Geod-esy and Geodynamics,2011,2(3):8-11.Doi:10.3724/SP.J1246.2011.00008.
3 Zhu Fuying,Wu Yun and Fu Ningbo.Application of Kalmanfilter in detecting pre-earthquake ionospheric TEC anomaly[J].Geodesy and Geodynamics,2011,2(2):43-47.Doi:10.3724/SP.J.1246.2011.00043.
4 Liu J Y,et al.Seismo-ionosphere signatures prior to Taiwanearthquake[J].Geophysical Research Letters,2000,27:3113-3 116.
5林剑,吴云,祝芙英.震前电离层TEC异常扰动的研究[J].武汉大学学报(信息科学版),2009,34(8):975-
978.(Lin Jian,Wu Yun and Zhu Fuying.Ionosphere TEC a-nomalous disturbance of pre-seismic[J].Geomatics and In-formation Science of Wuhan University,2009,34(8):975-978)
6卓裕荣.电离层地震前兆之研究[D].国立中央大学,2002.(Zhuo Yurong.Study of ionospheric earthquake pre-cursors[D].National Central University,2002)
7张强,等.震前电离层TEC异常分析[J].大地测量与地球动力学,2007,(3):91-96.(Zhang Qiang,et al.On i-onospheric TEC anomaly before earthquake[J].Journal ofGeodesy and Geodynamics,2007,(3):91-96)
8杨剑,吴云,周义炎.基于电离层层析成像技术探测汶川地震前电离层异常[J].大地测量与地球动力学,2011,(1):9-14.(Yang Jian,Wu Yun and Zhou Yiyan.Probe in-to seismo-ionospheric anomaly of Wenchuan earthquakebased on computerized ionospheric tomography[J].Journalof Geodesy and Geodynamics,2011,(1):9-14)
9闻得保.基于GPS的电离层层析算法及其应用研究[D].中国科学院,2007.(Wen Debao.Investigation of GPS-basedionospheric tomographic algorithms and their applications[D].Doctoral Thesis of Chinese Academy of Sciences,2007)
10肖宏波,史小红,王晓颖.电离层层析成像的一种改进算法[J]。西安工业大学学报,2008,28(2):115-118.(Xiao Hongbo,Shi Xiaohong and Wang Xiaoying.Improvedalgorithm for computerized ionospheric tomography[J].Journal of Xi’an Technological University,2008,28(2):115-118)
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