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Detailed Reference Information |
Khatiwala, S. and Visbeck, M. (2000). An estimate of the eddy-induced circulation in the Labrador Sea. Geophysical Research Letters 27: doi: 10.1029/1999GL011073. issn: 0094-8276. |
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Regions of oceanic deep convection such as the Labrador Sea are prone to baroclinic instability. The resulting geostrophic eddies play a crucial role in the post-convection adjustment process which involves both rearrangement of mass so as to release available potential energy and exchange of heat and salt with the boundaries. In this study it is proposed that the slumping of isopycnals as sociated with baroclinic instability drives an eddy-induced overturning circulation consisting of a surface intensified flow transporting low salinity water from the boundary currents into the interior; sinking motion in the interior; and an outflow at depth transporting newly ventilated Labrador Sea Water towards the boundaries. Typical eddy-induced velocities estimated from hydrographic data are roughly 0.5 cm/s for the surface inflow, 1 m/day for the vertical motion, and 0.1 cm/s for the deeper outflow, in close agreement with those calculated in a numerical model. ¿ 2000 American Geophysical Union |
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Abstract |
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Keywords
Oceanography, General, Numerical modeling, Oceanography, Physical, Eddies and mesoscale processes |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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