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Resonant acoustic waves in a stratied atmsophere

Taroyan, Y.A. and Erdelyi , R. (2007) Resonant acoustic waves in a stratied atmsophere. In: Erdelyi , R. and Mendoza-Briceno, C.A., (eds.) Waves & Oscillations in the Solar Atmosphere: Heating and Magneto-Seismology. Waves & Oscillations in the Solar Atmosphere: Heating and Magneto-Seismology: IAU Symposium 247, September 17-22, 2007, Porlamar, Isla de Margarita, Venezuela. Proceedings of the International Astronomical Union , 3 (s247). Cambridge University Press , Cambridge , pp. 86-89. ISBN 978-0-52187-4694

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Abstract

The upward propagation of linear acoustic waves in a gravitationally stratified atmosphere is studied. The wave motion is governed by the Klein-Gordon equation which contains a cut-off frequency introduced by stratification. The acoustic cut-off may act as a potential barrier when the temperature decreases with height. It is shown that waves trapped below the barrier could be subject to a resonance which extends into the entire unbounded atmosphere. The parameter space characterizing the resonance is explored.

Item Type: Proceedings Paper
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield)
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Depositing User: Mrs Megan Hobbs
Date Deposited: 16 Mar 2010 18:06
Last Modified: 07 Jun 2010 11:09
Published Version: http://dx.doi.org/10.1017/S1743921308014713
Status: Published
Publisher: Cambridge University Press
Identification Number: doi:1017/S1743921308014713
URI: http://eprints.whiterose.ac.uk/id/eprint/10584

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