Lateral entrainment in baroclinic currents

Clicks: 2
ID: 309002
1994
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Abstract
The strong mesoscale velocity fluctuations (''eddies'') observed in the deep Gulf Stream region maybe dynamically necessary to incorporate the Recirculation Gyres which account for the downstream increase in transport. The eddy-current interaction leading to entrainment is studied in a two layer quasi-geostrophic model with piecewise uniform potential vorticity. It is shown that the volume entrained by a bottom eddy of strength Gamma*(2) initially located near the edge of a bottom current depends mainly on the lateral shear st of this current, rather than on the much stronger shear of the upper layer. It is suggested that the ''mean entrainment velocity'' into an isopycnal layer of nearly uniform vertical thickness is proportional to (Gamma*(2s2)), where Gamma*(2) (cm(2)/sec) is proportional to the integrated potential vorticity anomaly of the eddy.
Reference Key
openalex_W1980567131 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Melvin E. Stern, Jean‐Raymond Bidlot
Journal journal of marine research
Year 1994
DOI
10.1357/0022240943076786
URL
Keywords Keywords not found

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