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Radio Physics and Radio Astronomy

ISSN 印刷: 2152-274X
ISSN オンライン: 2152-2758

Archives: Volume 1, 2010 to Volume 3, 2012

Radio Physics and Radio Astronomy

DOI: 10.1615/RadioPhysicsRadioAstronomy.v2.i4.40
pages 315-323

WIND-INDUCED EFFECTS IN THE PARAMETERS OF ATMOSPHERIC GRAVITY WAVES IN THE POLAR IONOSPHERE

Alla K. Fedorenko
Institute of Space Research of National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Kiev
Evgeniy I. Kryuchkov
Institute of Space Research of National Academy of Sciences of Ukraine and National Space Agency of Ukraine, Kyiv

要約

Data measured from the Dynamic Explorer 2 satellite are used to analyze the wind influence on the propagation and properties of Atmospheric Gravity Waves (AGW) in the polar thermosphere. Some effects indicating that the AGW behavior is under wind control have been revealed. Specifically it has been found that i) the AGWs systematically propagate oppositely to the wind and ii) the higher the wind speed, the greater the AGW amplitude. An empiric dependence of the AGW amplitude on the wind speed has been obtained. The specific features in the spectral characteristics of the AGWs propagating above the polar caps are explained by the effect of wave modification in strong winds of polar circulation.