著者

Tomoki Higuchi Nozomi Haga Kuniyuki Motojima

出版者

日本大気電気学会

雑誌

Journal of Atmospheric Electricity (ISSN:09192050)

巻号頁・発行日

vol.34, no.2, pp.87-100, 2014 (Released:2014-08-28)

参考文献数

10

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Recently, electromagnetic phenomena associated with earthquakes have gotten a lot of attention. So, we have been observed VHF band propagation for long timeand analyzed statistical relation between anomalous line-of-sight propagation in the VHF band and occurrences of earthquakes using quantitative evaluation. Now, we need to detect the anomalous propagation from received data. Therefore, we used a statistical analysis to judge anomalous propagation in a previous study. In this paper, we judged the anomalous propagation by continuous wavelet transform and evaluated the relationship with earthquakes. Furthermore, we introduced hit rate and alarm rate to simplify the relationship between anomalous propagation and earthquakes. As a result, relation between anomalous propagation and earthquakes became clear.