PROPAGATION OF TWEEK ATMOSPHERICS IN THE EARTH-IONOSPHERE WAVE-GUIDE

被引：21
|
作者：
KUMAR, S
DIXIT, SK
GWAL, AK
机构：
[1] Space Plasma Laboratory, Department of Physics, University of Bhopal, Bhopal
来源：
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA C-GEOPHYSICS AND SPACE PHYSICS | 1994年 / 17卷 / 03期
关键词：
WAVE PROPAGATION; PHYSICS OF THE IONOSPHERE;
D O I：
10.1007/BF02509168
中图分类号：
学科分类号：
摘要：
The propagation characteristics of tweek atmospherics observed at the low-latitude ground station of Bhopal have been studied near the mode cut-off frequencies. The Earth-ionosphere wave guide plays an important role in the propagation of these tweek signals. It is shown that the height of the Earth-ionosphere wave guide varies from 83 km to 89 km. The sharp increase in the propagation time is found near the cut-off frequencies. The tweeks of third mode attenuate faster than the second- and first-order mode tweeks. This explains the low occurrence rate of higher-mode tweeks.
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页码：275 / 280
页数：6
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