Journal ArticleDOI
Subionospheric VLF/LF Probing of Ionospheric Perturbations Associated with Earthquakes: A Possibility of Earthquake Prediction
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TLDR
The VLF/LF receiving network has been established in Japan, which is composed of seven observing stations (Moshiri (Hokkaido), Chofu (Tokyo, UEC, University o... as mentioned in this paper ).Abstract:
The VLF (Very Low Frequency) / LF (Low Frequency) receiving network has been established in Japan, which is composed of seven observing stations (Moshiri (Hokkaido), Chofu (Tokyo, UEC, University o...read more
Citations
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Journal ArticleDOI
A statistical study on the correlation between lower ionospheric perturbations as seen by subionospheric VLF/LF propagation and earthquakes
Masashi Hayakawa,Y. Kasahara,Takashi Nakamura,Francesco Muto,T. Horie,S. Maekawa,Yasuhide Hobara,Alexander Rozhnoi,Maria Solovieva,O. A. Molchanov +9 more
TL;DR: In this paper, 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.
Journal ArticleDOI
Current status of seismo-electromagnetics for short-term earthquake prediction
Masashi Hayakawa,Yasuhide Hobara +1 more
TL;DR: In this paper, short-term (timescale of hours, days and weeks) earthquake (EQ) prediction is of essential importance to mitigate EQ disasters, which is based on seismic measurement.
Journal ArticleDOI
Probing the lower ionospheric perturbations associated with earthquakes by means of subionospheric VLF/LF propagation
TL;DR: In this article, the authors present a possible use of VLF/LF (very low frequency (3-30 kHz)/low frequency (30-300 kHz) radio sounding of seismo-ionospheric perturbations.
A statistical study on the correlation between lower ionospheric perturbations as seen by subionospheric VLF/LF propagation and earthquakes
Masashi Hayakawa,Y. Kasahara,T. Nakamura,Yasuhide Hobara,Alexander Rozhnoi,Maria Solovieva,O. A. Molchanov +6 more
TL;DR: In this article, an extensive period of data over seven years 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 greater than 6.0.
Journal ArticleDOI
Integrating Pre-Earthquake Signatures From Different Precursor Tools
Essam Ghamry,Emad K. Mohamed,Mohamed S. Abdalzaher,Mohamed Elwekeil,Dedalo Marchetti,Angelo De Santis,Mostafa Hegy,Akimasa Yoshikawa,Adel Fathy +8 more
TL;DR: In this paper, the authors jointly analyzed magnetic, MODIS, and MERRA-2 data in space and time around the epicenters before the selected EQs in Mexico, Japan, Chile, and Indonesia.
References
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Book
Seismo electromagnetics : lithosphere-atmosphere-ionosphere coupling
正士 早川,O. A. Molchanov +1 more
Book
Seismo-electromagnetics and related phenomena : history and latest results
O. A. Molchanov,正士 早川 +1 more
Journal ArticleDOI
Middle latitude LF (40 kHz) phase variations associated with earthquakes for quiet and disturbed geomagnetic conditions
TL;DR: In this paper, the phase and amplitude anomalies in subionospheric LF signal (40 kHz) along the path Japan-Kamchatka of 2300 km were studied for the data observed by means of a digital OminiPAL receiver for 2 years.