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Article
A Note on the Direct Injection of Turbulence by Breaking Waves
Ocean Modelling
  • Nicolas Rascle, Institut Francais de Recherche pour l’Exploitation de la Mer - Plouzané, France; University of Cape Town - South Africa
  • Bertrand Chapron, Institut Francais de Recherche pour l’Exploitation de la Mer - Plouzané, France
  • Fabrice Ardhuin, Institut Francais de Recherche pour l’Exploitation de la Mer - Plouzané, France
  • Alexander Soloviev, Nova Southeastern University
Document Type
Article
Publication Date
10-1-2013
Keywords
  • Surface waves,
  • Wave breaking,
  • Wave-induced turbulence,
  • Vertical mixing,
  • Mixed layer,
  • Ekman currents
Abstract
We investigate the turbulence induced by wave-breaking at the ocean surface. Two recent models use a mechanism of direct depth injection of turbulent kinetic energy (TKE) by breaking waves. Those models aim to reproduce the near-surface mean and turbulent properties, in particular the TKE dissipation rates. Of critical importance are the injection depth of each breaking wave and the size distribution of those breaking waves. The models by Sullivan et al. (2007) and by Kudryavtsev et al. (2008) have very different parameterizations, and those differences are reviewed here and compared to available observations. Using realistic parameterizations in these models leads to TKE injections too shallow to compare to observations, in particular for developed seas. The near-surface turbulence is thus still not well understood to the zeroth order. For instance, whether developed seas produce deeper or shallower mixing than young seas is neither well understood nor well modelled. Additional dedicated measurements as well as investigations of breaking non-breaking wave interactions are needed.
Comments

©2012 Elsevier Ltd.

ORCID ID
0000-0001-6519-1547
DOI
10.1016/j.ocemod.2012.09.001
Citation Information
Nicolas Rascle, Bertrand Chapron, Fabrice Ardhuin and Alexander Soloviev. "A Note on the Direct Injection of Turbulence by Breaking Waves" Ocean Modelling Vol. 70 (2013) p. 145 - 151 ISSN: 1463-5003
Available at: http://works.bepress.com/alexander-soloviev/5/