Woods Hole Oceanographic Institution

Steven R. Jayne

»Sc.D. Thesis
»Recirculation gyres in a beta-plane jet
»Forcing and sampling of ocean models
»Thermohaline circulation - sea ice feedback
»Recirculation forced by an unstable jet
»Tidal dissipation over rough topography
»Dynamics of ocean heat transport variability
»Deep ocean currents from GRACE
»Estimates of tidally-driven mixing
»Millennial climate variability
»Oceanic eddy heat transport
»Ocean heat content from GRACE
»Tidally-driven mixing in an ocean model
»Ocean bathymetry and Earth's climate
»Bathymetry from space
»Subtropical mode water during KESS
»North Atlantic Ocean circulation from GRACE
»Subtropical mode water in the Kuroshio Extension
»Tidal mixing during the Last Glacial Maximum
»Kuroshio northern recirculation gyre
»Bottom pressure in KESS and GRACE
»Ocean model metrics
»Abyssal mixing in CCSM
»Kuroshio Extension jet and transport
»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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