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Ocean Speed and Turbulence Measurements Using Pitot-Static Tubes on Moorings
Publisher: American Meteorological Society
Abstract: low-power (<10 mW), physically small (15.6 cm long ? 3.2 cm diameter), lightweight (600 g Cu; alternatively, 200 g Al), robust, and simply calibrated pitot-static tube to measure mean speed and turbulence dissipation is ...
Inertial-Convective Subrange Estimates of Thermal Variance Dissipation Rate from Moored Temperature Measurements
Publisher: American Meteorological Society
Abstract: A procedure for estimating thermal variance dissipation rate ?T by scaling the inertial-convective subrange of temperature gradient spectra from thermistor measurements on a Tropical Atmosphere Ocean (TAO) equatorial ...
Oceanic Isopycnal Slope Spectra. Part I: Internal Waves
Publisher: American Meteorological Society
Abstract: Horizontal tow measurements of internal waves are rare and have been largely supplanted in recent decades by vertical profile measurements. Here, estimates of isotherm displacements and turbulence dissipation rate from a ...
A New Look at Richardson Number Mixing Schemes for Equatorial Ocean Modeling
Publisher: American Meteorological Society
Abstract: A reexamination of turbulence dissipation measurements from the equatorial Pacific shows that the turbulence diffusivities are not a simple function of the gradient Richardson number. A widely used mixing scheme, the ...
Oceanic Isopycnal Slope Spectra. Part II: Turbulence
Publisher: American Meteorological Society
Abstract: Isopycnal slope spectra were computed from thermistor data obtained using a microstructure platform towed through turbulence generated by internal tidal motions near the Hawaiian Ridge. The spectra were compared with ...
Microstructure Estimates of Turbulent Salinity Flux and the Dissipation Spectrum of Salinity
Publisher: American Meteorological Society
Abstract: Direct determination of the irreversible turbulent flux of salinity in the ocean has not been possible because of the complexity of measuring salinity on the smallest scales over which it mixes. Presented is an analysis ...
Estimating Salinity Variance Dissipation Rate from Conductivity Microstructure Measurements
Publisher: American Meteorological Society
Abstract: At the smallest length scales, conductivity measurements include a contribution from salinity fluctuations in the inertial?convective and viscous?diffusive ranges of the turbulent scalar variance spectrum. Interpreting ...
Energetics of Bottom Ekman Layers during Buoyancy Arrest
Publisher: American Meteorological Society
Abstract: urbulent bottom Ekman layers are among the most important energy conversion sites in the ocean. Their energetics are notoriously complex, in particular near sloping topography, where the feedback between cross-slope Ekman ...
Mixing and Intrusions in a Rotating Cold-Core Feature off Cape Blanco, Oregon
Publisher: American Meteorological Society
Abstract: During August 1986, a large cold anomaly was observed in satellite and in situ measurements near Cape Blanco at 42°N, 126°30?W off the Pacific Coast. Detailed vertical profiles of temperature, conductivity, turbulent ...
Heat Transport through Diurnal Warm Layers
Publisher: American Meteorological Society
Abstract: Penetration of solar radiation in the upper few meters of the ocean creates a near-surface, stratified diurnal warm layer. Wind stress accelerates a diurnal jet in this layer. Turbulence generated at the diurnal thermocline, ...
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