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Evidence for an eastward flow along the Central and South American Caribbean Coast

AutorAndrade, Carlos Alberto; Barton, Eric D. ; Mooers, Christopher N. K.
Palabras claveUndercurrents
Ocean circulation
Caribbean Sea
Fecha de publicación12-jun-2003
EditorAmerican Geophysical Union
CitaciónJournal of Geophysical Research - Part C - Oceans 108(C6): 3185 (2003)
ResumenHydrographic transects suggest an eastward flow with a subsurface core along the entire southern boundary of the Caribbean Sea. The transport of the coastal limb of the Panama-Colombia Gyre (PCG), known as the Panama-Colombia Countercurrent, decreases toward the east (from ∼6 Sv off Panama), as water is lost into the recirculation of the PCG. Off Panama, the flow is strongest at the surface, but, off Colombia, it is strongest at around 100 m. A portion of the counterflow (∼1 Sv) continues eastward along the Colombian coast as far as the Guajira region (12°N, 72°W), where it submerges to become an undercurrent beneath the coastal upwelling center there. The eastward flow also occurs in the Venezuela Basin, beneath the coastal upwelling region off Cariaco Basin and exits the Caribbean through the Grenada Channel at around 200 m depth. Numerical simulations suggest that this flow, counter to the Caribbean Current, is a semi-continuous feature along the entire southern boundary of the Caribbean, and that it is associated with offshore cyclonic eddies. It probably constitutes part of the Sverdrup circulation of the Tropical North Atlantic cyclonic cell.
Descripción11 pages, 8 figures, 2 tables.-- Full-text version available Open Access at: http://www.iim.csic.es/~barton/html/pdfs.html
Versión del editorhttp://dx.doi.org/10.1029/2002JC001549
URIhttp://hdl.handle.net/10261/2627
DOI10.1029/2002JC001549
ISSN0148-0227
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