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| Titel |
On the interaction of wind and steep gravity wave groups using Miles' and Jeffreys' mechanisms |
| VerfasserIn |
J. Touboul, C. Kharif, E. Pelinovsky, J.-P. Giovanangeli |
| 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 ; 15, no. 6 ; Nr. 15, no. 6 (2008-12-16), S.1023-1031 |
| Datensatznummer |
250012817
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| Publikation (Nr.) |
 copernicus.org/npg-15-1023-2008.pdf |
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| Zusammenfassung |
| The interaction of wind and water wave groups is investigated
theoretically and numerically. A steep wave train is generated by
means of dispersive focusing, using both the linear theory and fully
nonlinear equations. The linear theory is based on the Schrödinger
equation while the nonlinear approach is developed numerically
within the framework of the potential theory. The interaction
between the chirped wave packet and wind is described by the Miles'
mechanism. The differences between both approaches are discussed,
and the influence of nonlinearity is emphasized. Furthermore, a
different mechanism is considered, described by the modified
Jeffreys' sheltering theory. From comparison between the two
mechanisms, it is found that the persistence of the steep wave group
depends on the physical model used, and is significantly increased
when we use the latter mechanism. |
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