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»Sc.D. Thesis
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»The Morphology of Steve

L. C. St. Laurent, H. L. Simmons, and S. R. Jayne , Estimates of tidally driven enhanced mixing in the deep ocean , Geophysical Research Letters, 2002

Using a parameterization for internal wave energy flux in a hydrodynamic model for the tides, we estimate the global distribution of tidal energy available for enhanced turbulent mixing. A relation for the diffusivity of vertical mixing is formulated for regions where internal tides dissipate their energy as turbulence.We assume that 30±10% of the internal tide energy flux dissipates as turbulence near the site of generation, consistent with an estimate based on microstructure observations from a mid-ocean ridge site. Enhanced levels of mixing are modeled to decay away from topography, in a manner consistent with these observations. Parameterized diffusivities are shown to resemble observed abyssal mixing rates, with estimated uncertainties comparable to standard errors associated with budget and microstructure methods.

FILE » StLaurent_2002.pdf

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