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Statistical properties of directional ocean waves: the role of the modulational instability in the formation of extreme events
Onorato, M.; Waseda, T.; Toffoli, A.; Cavaleri, L.; Gramstad, O.; Janssen, P.A.E.M.; Kinoshita, T.; Monbaliu, J.; Mori, N.; Osborne, A.R.; Serio, M.; Stansberg, C.T.; Tamura, H.; Trulsen, K. (2009). Statistical properties of directional ocean waves: the role of the modulational instability in the formation of extreme events. Phys. Rev. Lett. 102(11): 4. hdl.handle.net/10.1103/PhysRevLett.102.114502
In: Physical Review Letters. American Physical Society: Woodbury, N.Y., etc.. ISSN 0031-9007, more
Peer reviewed article  

Available in Authors 
    VLIZ: Open Repository 279659 [ OMA ]

Keyword
    Marine

Authors  Top 
  • Onorato, M.
  • Waseda, T.
  • Toffoli, A.
  • Cavaleri, L.
  • Gramstad, O.
  • Janssen, P.A.E.M.
  • Kinoshita, T.
  • Monbaliu, J., more
  • Mori, N.
  • Osborne, A.R.
  • Serio, M.
  • Stansberg, C.T.
  • Tamura, H.
  • Trulsen, K.

Abstract
    We discuss two independent, large scale experiments performed in two wave basins of different dimensions in which the statistics of the surface wave elevation are addressed. Both facilities are equipped with a wave maker capable of generating waves with prescribed frequency and directional properties. The experimental results show that the probability of the formation of large amplitude waves strongly depends on the directional properties of the waves. Sea states characterized by long-crested and steep waves are more likely to be populated by freak waves with respect to those characterized by a large directional spreading.

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