Abstract
Abstract A synthesis of WOCE (and other) hydrographic data shows that the deep western boundary current of Antarctic Bottom Water has a double-core structure, and that it is differentially modified during its northward transit through the Brazil Basin. At 25°S, it descends about 200 m while continuing equatorward as a paired, double-core current over the relatively broad, sloping topography of the western region. The downslope core is faster, 4–6 cm s−1 versus 3 cm s−1, and is coincident with the high-density core. Equatorward of 19°S the cores begin to diverge and by 15°S, the velocity cores have separated and the high-speed pattern has inverted. Between 13° and 11°S the colder, slower-flowing branch (around 3 cm s−1) deepens by 350 m, with a noticeable decrease in the vertical stratification of overlying water characteristics. Subsequently, it continues to the equator toward the Romanche–Chain Fracture Zones. The warmer, faster-flowing branch (around 8 cm s−1) proceeds to the equator along the continent...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.