Journal ArticleDOI
Current status of seismo-electromagnetics for short-term earthquake prediction
Masashi Hayakawa,Yasuhide Hobara +1 more
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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.Abstract:
Short-term (timescale of hours, days and weeks) earthquake (EQ) prediction is of essential importance to mitigate EQ disasters. Short-term EQ prediction has so far been based on seismic measurement...read more
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Journal ArticleDOI
A Survey of Internet of Things (IoT) for Geohazard Prevention: Applications, Technologies, and Challenges
TL;DR: The applications of the IoT in the monitoring and early warning of seven types of common geohazards, including landslides, debris flow, rockfall, surface subsidence, surface collapse, surface cracks, and earthquakes, are surveyed and the challenges are summarized.
Journal ArticleDOI
Statistical mechanics and information-theoretic perspectives on complexity in the earth system
Georgios Balasis,Reik V. Donner,Reik V. Donner,Stelios M. Potirakis,Jakob Runge,Jakob Runge,Constantinos Papadimitriou,Constantinos Papadimitriou,Ioannis A. Daglis,Ioannis A. Daglis,Konstantinos Eftaxias,Juergen Kurths +11 more
TL;DR: This review provides a summary of methods originated in (non-equilibrium) statistical mechanics and information theory, which have recently found successful applications to quantitatively studying complexity in various components of the complex system Earth.
Journal ArticleDOI
Generation of Seismic-Related DC Electric Fields and Lithosphere-Atmosphere-Ionosphere Coupling
Valery Sorokin,Masashi Hayakawa +1 more
TL;DR: In this paper, the influence of earthquake preparation processes on the ionosphere through the electric field and electric current occurring in the global atmosphere-ionosphere electric circuit is considered based on the satellite and ground-based experimental data of electric fields, plasma and electromagnetic perturbations obtained for several days before an earthquake.
Journal ArticleDOI
Pre-earthquake ionospheric anomalies before three major earthquakes by GPS-TEC and GIM-TEC data during 2015–2017
TL;DR: In this article, the authors presented different time interval of pre-seismic ionospheric anomalies, however, this study showed that EQs ionosphere precursors may occur within 10 days.
References
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Journal ArticleDOI
A Statistical Study on the Dependence of Characteristics of VLF/LF Terminator Times on the Propagation Direction
S. Maekawa,Masashi Hayakawa +1 more
TL;DR: In this paper, the authors presented a detailed statistical study over two years on the times of amplitude minima (so-called terminator times) observed for the VLF/LF transmitters NPM/NWC/JJY as received at three sites.
Journal ArticleDOI
VLF-LF radio signals collected at Bari (South Italy): a preliminary analysis on signal anomalies associated with earthquakes
P. F. Biagi,R. Piccolo,L. Castellana,Tommaso Maggipinto,A. Ermini,S. Martellucci,Carlo Bellecci,Giuseppe Perna,Vito Capozzi,O. A. Molchanov,Masashi Hayakawa,Kenji Ohta +11 more
TL;DR: In this article, the authors analyzed the electric field strength of five VLF-LF signals transmitted from United Kingdom (f = 16kHz), France (f=20.9kHz), Germany (f='23.4kHz), Iceland (f`37.5kHz), and Italy (f´54kHz) with a 5s sampling frequency and proposed that these disturbances are related to general excitation of the margin between the African and European plates.
Journal ArticleDOI
Subionospheric VLF/LF Probing of Ionospheric Perturbations Associated with Earthquakes: A Possibility of Earthquake Prediction
TL;DR: 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 ).
Proceedings ArticleDOI
Results of ULF magnetic field measurements near the epicenters of the Spitak (M=6.9) and the Loma Prieta (M=7.1) earthquakes: comparative analysis
Yu. A. Kopytenko,P. M. Voronov,E. A. Kopytenko,T. G. Matiashvili,Antony C. Fraser-Smith,A. Bernardi +5 more
TL;DR: The characteristic of the ULF magnetic field emissions measured at two magnetic observatories in the Republic of Georgia prior to and after the M equals 6.9 earthquake that occurred near Spitak, Armenia on December 7, 1988 are compared with the apparently similar emissions associated with the M = 7.1 earthquake which occurred near Loma Prieta, California on October 19, 1989.
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O. A. Molchanov,正士 早川 +1 more