Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
doi:10.5194/nhess-2016-379
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
02 Jan 2017
Review status
A revision of this discussion paper is under review for the journal Natural Hazards and Earth System Sciences (NHESS).
Stochastic consideration of relationship between occurrences of earthquake and fluctuations in the radio wave propagation
Kuniyuki Motojima, Kousuke Tanigawa, and Nozomi Haga Gunma University, 1-5-1, Tenjin-cho, Kiryu, Gumna 376-8515, Japan
Abstract. Research of the geophysical electromagnetic phenomena with seismic activity is important for hazard-resistant strategy. Many papers which indicate the existence of geophysical electromagnetic phenomena associated with earthquakes are reported frequently. Anomalous propagation in the radio waves is sometimes related with earthquakes. In previous paper, authors proposed a new concept to estimate the relation between earthquakes and anomalous line-of-sight propagation in VHF band by statistical approach. Event probability of the anomalous line-of-sight propagation increased just a few days prior to earthquakes. In this paper, we investigated a new relationship between anomalous fluctuations in the radio waves, which propagated from line-of-sight region, and occurrences of earthquake by using statistical analysis. Monitoring the strength of radio waves and detecting the anomalous fluctuations by using a new original method, we can obtain the high probability which indicates strong relation between the anomalous propagation and occurrences of earthquake. After the stochastic consideration, we can find out the anomalous fluctuations, which appear one day prior to earthquakes near the wave propagation path.

Citation: Motojima, K., Tanigawa, K., and Haga, N.: Stochastic consideration of relationship between occurrences of earthquake and fluctuations in the radio wave propagation, Nat. Hazards Earth Syst. Sci. Discuss., doi:10.5194/nhess-2016-379, in review, 2017.
Kuniyuki Motojima et al.
Kuniyuki Motojima et al.
Kuniyuki Motojima et al.

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