 |
| Titel |
Occurrence of extreme waves in three-dimensional mechanically generated wave fields propagating over an oblique current |
| VerfasserIn |
A. Toffoli, L. Cavaleri, A. V. Babanin, M. Benoit, E. M. Bitner-Gregersen, J. Monbaliu, M. Onorato, A. R. Osborne, C. T. Stansberg |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 11, no. 3 ; Nr. 11, no. 3 (2011-03-22), S.895-903 |
| Datensatznummer |
250009269
|
| Publikation (Nr.) |
 copernicus.org/nhess-11-895-2011.pdf |
|
|
|
|
|
| Zusammenfassung |
| Laboratory experiments were performed to study the dynamics of three-
dimensional mechanically generated waves propagating over an oblique current
in partial opposition. The flow velocity varied along the mean wave direction
of propagation with an increasing trend between the wave-maker and the centre
of the tank. Tests with regular wave packets traversing the area of positive
current gradient showed that the concurrent increase of wave steepness
triggered modulational instability on otherwise stable wave trains and hence
induced the development of very large amplitude waves. In random directional
wave fields, the presence of the oblique current resulted in a weak
reinforcement of wave instability with a subsequent increase of the
probability of occurrence of extreme events. This seems to partially
compensate the suppression of strongly non-Gaussian properties due to
directional energy distribution. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|