Saturation of the internal tides and induced mixing in the abyssal ocean

Caroline J. Muller, Oliver Buhler

Research output: Contribution to journalArticle

Abstract

As part of an ongoing effort to develop a parameterization of wave-induced abyssal mixing, the authors derive an heuristic model for nonlinear wave breaking and energy dissipation associated with internal tides. Then the saturation and dissipation of internal tides for idealized and observed topography samples are investigated. One of the main results is that the wave-induced mixing could be more intense and more confined to the bottom than previously assumed in numerical models. Furthermore, in this model wave breaking and mixing clearly depend on the small scales of the topography below 10 km or so, which is below the current resolution of global bathymetry. This motivates the use of a statistical approach to represent the unresolved topography when addressing the role of internal tides in mixing the deep ocean.

Original languageEnglish (US)
Pages (from-to)2077-2096
Number of pages20
JournalJournal of Physical Oceanography
Volume39
Issue number9
DOIs
StatePublished - Sep 2009

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internal tide
saturation
wave breaking
topography
ocean
nonlinear wave
energy dissipation
wave energy
heuristics
bathymetry
dissipation
parameterization

ASJC Scopus subject areas

  • Oceanography

Cite this

Saturation of the internal tides and induced mixing in the abyssal ocean. / Muller, Caroline J.; Buhler, Oliver.

In: Journal of Physical Oceanography, Vol. 39, No. 9, 09.2009, p. 2077-2096.

Research output: Contribution to journalArticle

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