A statistical study on the correlation between lower ionospheric perturbations as seen by subionospheric VLF/LF propagation and earthquakes

M. Hayakawa; Y. Kasahara; T. NakamuraF. MutoT. HorieS. MaekawaY. HobaraA. A. RozhnoiM. SolovievaO. A. Molchanov

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A statistical study on the correlation between lower ionospheric perturbations as seen by subionospheric VLF/LF propagation and earthquakes

机译：统计研究之间的关系低电离层扰动所看到的subionospheric甚低频/低频传播和地震

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The subionospheric VLF/LF propagation is extensively used to investigate the lower ionospheric perturbation in possible association with earthquakes. An extensive period of data over 7 yr from January 2001 to December 2007 and a combination of different propagation paths in and around Japan are used to examine the statistical correlation between the VLF/LF propagation anomaly (average nighttime amplitude, dispersion, and nighttime fluctuation) and earthquakes with magnitude >6.0. It is then found that the propagation anomaly exceeding the 2σ (standard deviation) criterion indicating the presence of ionospheric perturbation is significantly correlated with earthquakes with shallow depth (<40 km). Finally, the mechanism of seismoionospheric perturbations is discussed.

机译：的subionospheric甚低频/低频传播广泛用于调查下电离层扰动的可能关联与地震。从2001年1月至2007年12月超过7年结合不同的传播路径和在日本被用来检查甚低频/低频之间的统计相关性传播异常(平均夜间振幅,色散和夜间波动)> 6.0级地震。传播异常超过2σ(标准差)标准指示电离层扰动的存在与地震密切相关浅深度(< 40公里)。seismoionospheric扰动进行了探讨。

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来源
《Journal of Geophysical Research, A. Space Physics: JGR》 |2010年第9期|A09305:1-A09305:9|共9页
作者
M. Hayakawa; Y. Kasahara; T. NakamuraF. MutoT. HorieS. MaekawaY. HobaraA. A. RozhnoiM. SolovievaO. A. Molchanov;
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作者单位

Institute of Physics of the Earth, Russian Academy of Sciences, Moscow 123910, Russia;

University of Electro-Communications (UEC), Advanced Wireless Communications Research Center (AWCC), Chofugaoka, Chofu, Tokyo, Japan;

UEC, Research Station on Seismo Electromagnetics, Chofu, Tokyo, Japan;

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正文语种英语
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关键词
ionospherics; Earthquakes; Statistical StudyanomalyEARTHQUAKE MAGNITUDEtravel pathNighttimeCorrelation analysisBetweenperturbation;

机译：电离层;地震;统计研究异常地震震级行进路径夜间相关性分析扰动间;

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A statistical study on the correlation between lower ionospheric perturbations as seen by subionospheric VLF/LF propagation and earthquakes

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