Seasonal behavior of middle-latitude short-wave mesospheric radio echoes

被引：0
作者：
Karashtin A.N. [1 ]
Shlugaev Y.V. [1 ]
Berezin I.V. [1 ]
Komrakov G.P. [1 ]
机构：
[1] Radiophysical Research Institute, Nizhny Novgorod
来源：
Radiophysics and Quantum Electronics | 1998年 / 41卷 / 10期
基金：
俄罗斯基础研究基金会;
关键词：
Radio Reflection; Seasonal Behavior; Permanent Presence; Radiophysical Research Institute; Sporadic Layer;
D O I：
10.1007/BF02676453
中图分类号：
学科分类号：
摘要：
Using the radar of the “Sura” facility, we studied the diurnal and seasonal behavior of mesospheric middle-latitude short-wave radio echoes. It was, found that the diurnal dependence of the intensity of reflected signals is mainly determined by the solar illumination of the mesosphere, i.e., by photoionization intensity. We revealed an almost permanent and season-independent presence of a thin turbulent layer at altitudes of 82 to 84 km whose radio echoes are maximal in summer and winter and much weaker in spring and fall. Sporadic summer radio echoes with increased intensity, which are observed at somewhat greater (by 2 to 4 km) altitudes, apparently correspond to the phenomenon of mesospheric summer echo (MSE) observed in the VHF range. © 1999 Kluwer Academic/Plenum Publishers.
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收藏
页码：842 / 849
页数：7
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