A laboratory study of low-mode internal tide scattering by finite-amplitude topography
Atmospheric and Oceanic Physics
2015-05-27 v1 Fluid Dynamics
Abstract
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.
Keywords
Cite
@article{arxiv.1505.06867,
title = {A laboratory study of low-mode internal tide scattering by finite-amplitude topography},
author = {Thomas Peacock and Matthieu J. Mercier and Henri Didelle and Samuel Viboud and Thierry Dauxois},
journal= {arXiv preprint arXiv:1505.06867},
year = {2015}
}