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Experimental evidence of the modulation of a plane wave to oblique perturbations and generation of rogue waves in finite water depth

Abstract : We present a laboratory experiment in a large directional wave basin to discuss the instability of a plane wave to oblique side band perturbations in finite water depth. Experimental observations, with the support of numerical simulations, confirm that a carrier wave becomes modulationally unstable even for relative water depths k(0)h < 1.36 (with k the wavenumber of the plane wave and h the water depth), when it is perturbed by appropriate oblique disturbances. Results corroborate that the underlying mechanism is still a plausible explanation for the generation of rogue waves in finite water depth. (C) 2013 AIP Publishing LLC.
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https://hal.archives-ouvertes.fr/hal-00947780
Contributor : Frédérique Bordignon <>
Submitted on : Monday, February 17, 2014 - 1:47:57 PM
Last modification on : Thursday, February 7, 2019 - 3:19:18 PM

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A. Toffoli, L. Fernandez, J. Monbaliu, M. Benoit, E. Gagnaire-Renou, et al.. Experimental evidence of the modulation of a plane wave to oblique perturbations and generation of rogue waves in finite water depth. Physics of Fluids, American Institute of Physics, 2013, 25 (9), ⟨10.1063/1.4821810⟩. ⟨hal-00947780⟩

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