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| Titel |
Acoustic-gravity nonlinear structures |
| VerfasserIn |
D. Jovanovic, L. Stenflo, P. K. Shukla |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 9, no. 3/4 ; Nr. 9, no. 3/4, S.333-339 |
| Datensatznummer |
250006546
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| Publikation (Nr.) |
 copernicus.org/npg-9-333-2002.pdf |
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| Zusammenfassung |
| A catalogue of
nonlinear vortex structures associated with acoustic-gravity perturbations
in the Earth's atmosphere is presented. Besides the previously known
Kelvin-Stewart cat's eyes, dipolar and tripolar structures, new
solutions having the form of a row of counter-rotating vortices, and
several weakly two-dimensional vortex chains are given. The existence
conditions for these nonlinear structures are discussed with respect to
the presence of inhomogeneities of the shear flows. The mode-coupling
mechanism for the nonlinear generation of shear flows in the presence of
linearly unstable acoustic-gravity waves, possibly also leading to
intermittency and chaos, is presented. |
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