A re-analysis of the 1971 Beta Scorpii occultation by Jupiter: study of temperature fluctuations and detection of wave activity

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• 作者：Raynaud ; Elisabeth ; Matcheva ; Katia ; Drossart ; Pierre ; Roques ; Franç ; oise ; Sicardy ; Bruno
• 关键词：Jupiter ; Occultations ; Atmospheres ; structure ; Dynamics
• 刊名：Icarus
• 出版年：2004
• 出版时间：April, 2004
• 年：2004
• 卷：168
• 期：2
• 页码：324-335
• 全文大小：659 K

文摘

Data from the 13 May 1971 β Scorpii occultation by the southern polar region of Jupiter (Vapillon et al., 1973, Astron. Astrophys. 29, 135–149) are re-analyzed with current methods. We correct the previous results for an inacurrate background estimation and calculate new temperature profiles, that are now consistent with the results of other observers of this occultation, as well as with the current knowledge of the jovian atmosphere. The characteristics of the profiles of temperature gradient and the spectral behavior of the temperature fluctuations are found to be similar to the results of previous investigations of planetary atmospheres and in agreement with the presence of atmospheric propagating gravity waves in the jovian atmosphere. We use a wavelet analysis of the temperature profiles to identify the dominant modes of wave activity and compare the reconstructed temperature fluctuations to model-generated gravity waves.