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Title

Extreme and rogue waves in directional wave fields

Author(s)

Toffoli, A.;  Bitner-Gregersen, E. M.

Abstract

It is well established that modulational instability enhances the probability of occurrence for rogue waves if the wave field is long crested, narrow banded and sufficiently steep. As a result, a substantial deviation from commonly used second order theory-based distributions can be expected. However the spreading of the wave energy over a number of directional components can notably reduce the effect of modulational instability. In order to achieve a better understanding on the influence of wave directionality and its implication for design work, numerical simulations based on the truncated potential Euler equations were used. Results show the existence of a transition region between strongly and weakly non-Gaussian statistics as short crestedness increases.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences

Source

Open Ocean Engineering Journal, Vol. 4 (2011), pp. 24-33

Publication year

2011

FOR Code(s)

040503 Physical Oceanography;  091103 Ocean Engineering

Keyword(s)

Deep water waves;  Extreme waves;  Modulational instability;  Wave statistics

Publisher

Bentham Open

ISSN

1874-835X

Publisher URL

http://dx.doi.org/10.2174/1874835X01104010024

Copyright

Copyright © 2011 The authors. Articles are licensed under the terms of the Creative Commons Attribution non-commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited. The published version of the paper is reproduced here in accordance with this policy.

Research Projects

Oceanic conditions within extreme tropical cyclones, Australian Research Council grant number LP0883888

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