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Convection Enhances Mixing in the Southern Ocean

Sohail, Taimoor; Gayen, Bishakhdatta; Hogg, Andy


Mixing efficiency is a measure of the energy lost to mixing compared to that lost to viscous dissipation. In a turbulent stratified fluid the mixing efficiency is often assumed constant at 𝜂 = 0.2, whereas with convection it takes values closer to 1. The value of mixing efficiency when both stratified shear flow and buoyancy-driven convection are active remains uncertain. We use a series of numerical simulations to determine the mixing efficiency in an idealized Southern Ocean model. The...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Geophysical Research Letters
DOI: 10.1029/2018GL077711
Access Rights: Open Access


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