Results 251 to 260 of about 3,876 (302)
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1980
Abstract The variability of the ocean over a wide range of scales, from the megameter to the millimeter, is examined in the light of turbulence theory. The geophysical constraints which arise from the Earth's rotation and curvature and from the stratification are discussed with emphasis on the role they can play at different scales in inducing ...
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Abstract The variability of the ocean over a wide range of scales, from the megameter to the millimeter, is examined in the light of turbulence theory. The geophysical constraints which arise from the Earth's rotation and curvature and from the stratification are discussed with emphasis on the role they can play at different scales in inducing ...
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Turbulence and microstructure in the ocean
Uspekhi Fizicheskih Nauk, 1973The possibility of distinguishing between turbulence and wave fluctuations of the hydrodynamic fields is discussed. Possible mechanisms of generation of turbulence in the ocean are considered, and theoretical information as well as experimental data are given concerning the spectra of small-scale turbulence in the upper layer of the ocean. Intermittent
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Meso- to Submesoscale Turbulence in the Ocean
2023The energy cycle in ocean models is still biased due to the large uncertainty regarding how processes in the mesoscale and submesoscale regimes are represented. Since mesoscale turbulence is largely geostrophic, it features an energy transfer towards larger scales.
Ilmar Leimann +4 more
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2011
In two experimental operations in deep water off the west coast of British Columbia, temperature and velocity microstructure have been recorded with a spatial resolution of 2 millimeters or better, from the thermocline down to a depth of 330 meters. Some measurements have been taken along horizontal paths at discrete depths, and, by superimposing a ...
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In two experimental operations in deep water off the west coast of British Columbia, temperature and velocity microstructure have been recorded with a spatial resolution of 2 millimeters or better, from the thermocline down to a depth of 330 meters. Some measurements have been taken along horizontal paths at discrete depths, and, by superimposing a ...
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Turbulent dispersion in the ocean
Progress in Oceanography, 2006Abstract The mathematical framework for turbulent transport in the ocean is reasonably well established. It may be applied to large-scale fields of scalars in the ocean and to the instantaneous or continuous discharge from a point. The theory and its physical basis can also provide an interpretation of passive scalar spectra.
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Turbulence modeling in ocean circulation problems
Izvestiya, Atmospheric and Oceanic Physics, 2014A physical formulation of the problem is considered. A mathematical model and a numerical algorithm of the turbulence model as part of the ocean circulation model for simulations for decades are formulated. The model is based on the evolution equations for turbulent kinetic energy (TKE) and the frequency of its viscous dissipation. A numerical solution
S. N. Moshonkin +3 more
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2017
Ocean turbulence (and turbulence in general) tends to be tremendously intermittent, events often dominating average values. Or, put another way, the distribution of turbulence tends to be highly skewed, requiring significant systematic observations to capture the important dynamics that control time and space averages.
Emily L. Shroyer +3 more
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Ocean turbulence (and turbulence in general) tends to be tremendously intermittent, events often dominating average values. Or, put another way, the distribution of turbulence tends to be highly skewed, requiring significant systematic observations to capture the important dynamics that control time and space averages.
Emily L. Shroyer +3 more
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Widespread Intense Turbulent Mixing in the Southern Ocean
Science, 2004Observations of internal wave velocity fluctuations show that enhanced turbulent mixing over rough topography in the Southern Ocean is remarkably intense and widespread. Mixing rates exceeding background values by a factor of 10 to 1000 are common above complex bathymetry over a distance of 2000 to 3000 kilometers at depths greater than 500 to 1000 ...
Naveira Garabato, A.C. +4 more
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Journal of Physical Oceanography
Abstract Upper-ocean turbulence results from a complex set of interactions between submesoscale turbulence and local boundary layer processes. The interaction between larger-scale currents and turbulent fluctuations is two-way: large-scale shearing motions generate turbulence, and the resulting coherent turbulent fluxes of momentum and buoyancy feed ...
Peter P. Sullivan, James C. McWilliams
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Abstract Upper-ocean turbulence results from a complex set of interactions between submesoscale turbulence and local boundary layer processes. The interaction between larger-scale currents and turbulent fluctuations is two-way: large-scale shearing motions generate turbulence, and the resulting coherent turbulent fluxes of momentum and buoyancy feed ...
Peter P. Sullivan, James C. McWilliams
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1998
The distributions of flows and water properties in the world’s oceans exhibit structure on a vast range of space and time scales. The largest scales (of order 107m) are limited chiefly by the size of ocean basins and ultimately of the earth. On the other end of the spectrum, gradients in velocity and water properties exist to sub-meter scales (see ...
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The distributions of flows and water properties in the world’s oceans exhibit structure on a vast range of space and time scales. The largest scales (of order 107m) are limited chiefly by the size of ocean basins and ultimately of the earth. On the other end of the spectrum, gradients in velocity and water properties exist to sub-meter scales (see ...
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