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Submesoscale Processes and Mixing

, 2022
In this chapter, we discuss the links between oceanic submesoscale (100 m–10 km) processes and mixing. Submesoscale currents occur on lateral scales of 100 m–10 km in the ocean and are associated with density fronts and filaments, vortices and topographic wakes at the surface and in the ocean's interior.
Jonathan Gula, John R. Taylor, Andrey Y. Shcherbina   +2 more
exaly   +3 more sources

Bringing Physics to Life at the Submesoscale [PDF]

Geophysical Research Letters, 2012
A common dynamical paradigm is that turbulence in the upper ocean is dominated by three classes of motion: mesoscale geostrophic eddies, internal waves and microscale three‐dimensional turbulence. Close to the ocean surface, however, a fourth class of turbulent motion is important: submesoscale frontal dynamics. These have a horizontal scale of O(1–10)
Adrian P. Martin, Pascal Riviere, Peter J S Franks   +2 more
exaly   +10 more sources

Generation of Submesoscale Frontal Eddies in the Agulhas Current [PDF]

Journal of Geophysical Research: Oceans, 2019
AbstractThis study addresses the dynamics of the Agulhas inshore front in the submesoscale range upstream of 26° E. Submesoscale frontal eddies are observed in the vicinity of Port Elizabeth (26° E) from satellite images and in observations collected from underwater gliders.
Pierrick Penven, Jonathan Gula, Claire Ménesguen   +2 more
exaly   +7 more sources

Seasonality of Submesoscale Dynamics in the Kuroshio Extension [PDF]

Geophysical Research Letters, 2016
Recent studies show that the vigorous seasonal cycle of the mixed layer modulates upper ocean submesoscale turbulence. Here we provide model‐based evidence that the seasonally changing upper ocean stratification in the Kuroshio Extension also modulates ...
Sarah Gille, Dimitris Menemenlis, Teresa K Chereskin   +2 more
exaly   +2 more sources

Submesoscale Currents in the Ocean [PDF]

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
This article is a perspective on the recently discovered realm of submesoscale currents in the ocean. They are intermediate-scale flow structures in the form of density fronts and filaments, topographic wakes and persistent coherent vortices at the surface and throughout the interior. They are created from mesoscale eddies and strong currents, and they
James C. McWilliams
exaly   +5 more sources

Submesoscale Activity Over the Argentinian Shelf

Geophysical Research Letters, 2008
Submesoscale activity over the Argentinian shelf is investigated by means of high resolution primitive equation numerical solutions. These reveal energetic turbulent activity (visually similar to the one occasionally seen in satellite images) at scales O(
Afonso M Paiva, Xavier Capet
exaly   +2 more sources

Submesoscale Dynamics in the Upper Ocean

Annual Review of Fluid Mechanics, 2023
Oceanic motions with spatial scales of 200 m–20 km, called submesoscales, are ubiquitous in the upper ocean and serve as a key intermediary between larger-scale balanced dynamics and unbalanced turbulence. Here, we introduce the fluid dynamics of submesoscales and contrast them with motions at larger and smaller scales.
John R. Taylor, Andrew F. Thompson
exaly   +3 more sources

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Submesoscale processes and dynamics

2008
Increased spatial resolution in recent observations and modeling has revealed a richness of structure and processes on lateral scales of a kilometer in the upper ocean. Processes at this scale, termed submesoscale, are distinguished by order one Rossby and Richardson numbers; their dynamics are distinct from those of the largely quasi-geostrophic ...
Leif N. Thomas, Amit Tandon, Amala Mahadevan   +2 more
openaire   +3 more sources

Wave-Vortex Interactions in the Submesoscale

2021
<p>The Surface Water and Ocean Topography (SWOT) mission is the next generation of satellite altimetry, set to launch in early 2022. It will be the first of its kind to provide global sea surface height (SSH) measurements fine enough to begin resolving the submesoscale.
Jeffrey Uncu, Nicolas Grisouard
openaire   +1 more source

Swell Propagation through Submesoscale Turbulence

Journal of Physical Oceanography, 2019
AbstractThe propagation of ocean swells from generating regions to remote coastlines is affected by submesoscale turbulence in the surface flow field. The presence of submesoscale velocity variations results in random scattering of wave rays. While the interactions with these flow fields are weak, cumulative effects over oceanic scales are significant ...
Janssen, Tim T, Smit, Pieter
openaire   +1 more source