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Title: Characterization of Atmospheric Waves at the Upper Clouds in the Polar Region of Venus
Authors: Peralta, Javier
Luz, David
Berry, David
Tsang, Constantine
Migliorini, Alessandra
Piccioni, Giuseppe
Drossart, Pierre
Keywords: Venus atmosphere
Issue Date: 2012
Publisher: European Planetary Science Congress 2012
Citation: Characterization of Atmospheric Waves at the Upper Clouds in the Polar Region of Venus. J. Peralta, D. Luz, D.L. Berry, C.C.C. Tsang, A. Migliorini, G. Piccioni, P. Drossart. EPSC Abstracts,Vol. 7 EPSC2012-529-1 2012.
Abstract: Non solar-fixed waves at the cloud tops of the southern polar region of Venus are studied in the winds measured with 3.9 and 5.0 μm images taken by the instrument VIRTIS-M onboard Venus Express. Wavenumbers 1, 2 and 3 are detected, with wave amplitudes ranging from 3.6 to 8.0 m/s. The evolution of the phase has been studied in 16 orbits, finding in a subset of orbits wavenumbers 1 and 2 propagating in different directions (zonal wind), and a westward progression with a phase velocity of approximately 5.7 m/s for the wavenumber 1 in the meridional wind. Finally, a new set of analytical solutions to the atmospheric waves is obtained for the planet Venus, and these are used to characterize the found waves in terms of the horizontal wavelength and phase velocity.
Type: article
Appears in Collections:FIS - Artigos em Livros de Actas/Proceedings

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