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

被引：134

作者：

Hayakawa, M. ^{[1
]}

Kasahara, Y. ^{[2
]}

Nakamura, T. ^{[2
]}

Muto, F. ^{[2
]}

Horie, T. ^{[2
]}

Maekawa, S. ^{[2
]}

Hobara, Y. ^{[2
]}

Rozhnoi, A. A. ^{[3
]}

Solovieva, M. ^{[3
]}

Molchanov, O. A. ^{[3
]}

机构：

[1] Univ Electrocommun, Res Stn Seismo Electromagnet, Adv Wireless Commun Res Ctr AWCC, Tokyo 1828585, Japan

[2] Univ Electrocommun, Dept Elect Engn, Adv Wireless Commun Res Ctr AWCC, Tokyo 1828585, Japan

[3] Russian Acad Sci, Inst Phys Earth, Moscow 123910, Russia

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 2010年 / 115卷

关键词：

ATMOSPHERIC GRAVITY-WAVES; SUMATRA EARTHQUAKE; SEISMIC ACTIVITY; ANOMALIES; PHASE; JAPAN; SIGNALS;

D O I：

10.1029/2009JA015143

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 2s (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.

引用

页数：9

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