ANOMALY IN THE LONG-DISTANCE 40-KHZ RADIO-WAVE PROPAGATION

被引：0
|
作者：
DE, BK
SARKAR, SK
机构：
来源：
INDIAN JOURNAL OF RADIO & SPACE PHYSICS | 1994年 / 23卷 / 04期
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D O I：
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Anomalous propagational characteristics (miday level greater than the midnight level) have been observed in the case of propagation of 40 kHz low frequency signal over a distance of 5100 km from Sanwa, Japan, to Calcutta. The anomaly is closely associated with geomagnetic storms. This is expected to be due to extra-ionization in the D-region caused by the precipitation of energetic charged particles. The storm after-effects have duration of one day in this low latitude path.
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页码：272 / 274
页数：3
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