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| Detailed Reference Information |
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da Silveira, I.C.A., Calado, L., Castro, B.M., Cirano, M., Lima, J.A.M. and Mascarenhas, A.d.S. (2004). On the baroclinic structure of the Brazil Current–Intermediate Western Boundary Current system at 22°–23°S. Geophysical Research Letters 31: doi: 10.1029/2004GL020036. issn: 0094-8276. |
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The baroclinic structure of the Brazil Current(BC)-Intermediate Western Boundary Current (IWBC) at 22¿--23¿S was investigated. A reanalysis of the pioneer velocity profile measurements of the TRANSCOBRA Experiment <Evans and Signorini, 1985> revealed that the BC-IWBC system is about 75--80% baroclinic. Mapped velocity structure showed flow reversal at about 450 m, an IWBC thickness of 1200 m and core velocities exceeding 0.30 m s-1. Total (baroclinic) transports for BC (southwestwards) and IWBC (northeastwards) were 5.6 (4.2) Sv and 3.6 (4.1) Sv, respectively. The strong baroclinic character of the BC-IWBC system and the lack of direct velocity observations in the area yielded us to propose the use of the cross-shelf version of the Princeton Ocean Model to generate absolute baroclinic velocities from hydrographic data. These velocities presented a similar reversal depth, and the transports of about 6--7 Sv for both BC-IWBC were also comparable to values reported in the literature. |
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Abstract |
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Keywords
Oceanography, Physical, Western boundary currents, Oceanography, Physical, Hydrography, Oceanography, General, Descriptive and regional oceanography |
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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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