Anomalies in the sub-ionospheric VLF signals for the 1995 Hyogo-ken Nanbu earthquake

被引：67
|
作者：
Hayakawa, M
Molchanov, OA
Ondoh, T
Kawai, E
机构：
[1] INST EARTH PHYS,GRUZINSKAYA,MOSCOW,RUSSIA
[2] COMMUN RES LABS,KOGANEI,TOKYO 184,JAPAN
[3] INUBO RADIO OBSERV,COMMUN RES LAB,CHOSHI 288,JAPAN
来源：
JOURNAL OF PHYSICS OF THE EARTH | 1996年 / 44卷 / 04期
关键词：
D O I：
10.4294/jpe1952.44.413
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The sub-ionospheric VLF Omega signal transmitted from Tsushima, Japan (geographic coordinates: 34 degrees 37'N, 129 degrees 27'E) is continuously received at Inubo (35 degrees 42'N, 140 degrees 52'E). The signal's propagation characteristics (especially phase) exhibited abnormal behavior (especially around the sunrise and sunset local times) a few days before the main shock of the 1995 Hyogo-ken Nanbu earthquake. We found from the computer simulation of VLF signal propagation that the observed effect can be explained by a decrease of about 0.7 km of VLF reflection height al the atmosphere-ionosphere boundary.
引用
收藏
页码：413 / 418
页数：6
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