Flow near a Continental Boundary Driven by an Oceanic Jet

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Year of Publication: 
1994
Authors: 
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Journal Title: 
Journal of Physical Oceanography
Journal Date: 
May
Place Published: 
Tertiary Title: 
Volume: 
24
Issue: 
5
Pages: 
966-978
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Publisher: 
ISBN Number: 
0022-3670
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:A1994NL32400007
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Abstract: 

To provide possible dynamical interpretations of the Gulf Stream-induced circulation in the Middle Atlantic Bight (MAB), the inshore flow driven by a steady and straight jet in a homogeneous ocean is considered via similarity solutions.To isolate the curvature effect of the coastal boundary, the author first considers the case of a constant-depth ocean, from which various nonlinear flow regimes are discerned. When applied to the MAB, the model can explain the observed intrusion of the Gulf Stream water just downstream of Cape Hatteras where the coastline curves convexly.Over larger scales of the MAB, the scale analysis suggests the importance of the topography in the vorticity balance. When the topography is included, the similarity solution shows the strong flow to be confined offshore, flanked inshore by a weak counterflow, consistent with the observed slope sea gyre. There is in addition a flow convergence toward the inshore edge of the jet, consistent with the observed occurrence of the shelf water there and the inferred shoreward flux of nutrients across the jet axis.

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Nl324Times Cited:3Cited References Count:10

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