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Article Dans Une Revue Physics of Fluids Année : 2009

A laboratory study of low-mode internal tide scattering by finite-amplitude topography

Résumé

We present the first laboratory experimental results concerning the scattering of a low-mode internal tide by a gaussian topography. Experiments performed at the Coriolis Platform in Grenoble used a recently-conceived internal wave generator as a means of producing a high-quality mode-1 wave field. The evolution of the wave field in the absence and presence of a supercritical Gaussian was studied by performing spatiotemporal modal decompositions of velocity field data obtained using Particle Image Velocimetry (PIV). The results support predictions that large-amplitude supercritical topography produces significant reflection of the internal tide and transfer of energy from low to high modes.
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Dates et versions

hal-00530812 , version 1 (25-05-2015)

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Paternité - Pas d'utilisation commerciale

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Thomas Peacock, Matthieu J. Mercier, Henri Didelle, Samuel Viboud, Thierry Dauxois. A laboratory study of low-mode internal tide scattering by finite-amplitude topography. Physics of Fluids, 2009, 21, pp.121702. ⟨10.1063/1.3267096⟩. ⟨hal-00530812⟩
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