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Journal of Automation and Information Sciences
SJR: 0.232 SNIP: 0.464 CiteScore™: 0.27

ISSN 印刷: 1064-2315
ISSN オンライン: 2163-9337

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Journal of Automation and Information Sciences

DOI: 10.1615/JAutomatInfScien.v47.i9.20
pages 10-22

Acoustic-Gravity Waves in Whirling Polar Thermosphere

Yuriy P. Ladikov-Roev
Institute of Space Research of National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Kiev, Ukraine
Oleg K. Cheremnykh
Institute of Space Research of National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Kiev, Ukraine
Alla K. Fedorenko
Institute of Space Research of National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Kiev
Vladimir E. Nabivach
Institute of Space Research of National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Kiev

要約

The propagation of acoustic-gravity waves (AGW) in a rotating medium was investigated. In a simple model it has been shown that the AGW frequencies, close to the Brunt−Vaisala frequency, may occur in the presence of vortex motion of the medium. These waves propagate against the direction of rotation of the medium and have a horizontal scale of hundreds of kilometers. The obtained results enable one to explain the AGW main observed features in the polar thermosphere by the presence of background large-scale vortex motions.


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