見通し内VHF帯伝搬異常と地震発生との統計的関連性
2010 年 31 巻 1 号 p. 37-49
詳細
2010 年 31 巻 1 号 p. 37-49
This paper was intended to find out any relation between anomalous line-of-sight propagations in the VHF band and occurrences of earthquakes near the VHF propagation path. The broadcasting waves from Tokyo tower were monitored continuously for 1155 days at Kiryu Gunma. Anomalous propagations were distinguished from the received data by using a statistical analysis. After the statistical thoughtful consideration, it was found out that earthquakes associated with anomalous propagations were characterized by (1) magnitude of earthquakes M≧4.5, (2) distance from epicenters L≦75km and (3) depth of hypocenters D≦50km.
