Articles | Volume 19, issue 5
https://doi.org/10.5194/os-19-1465-2023
https://doi.org/10.5194/os-19-1465-2023
Research article
 | 
18 Oct 2023
Research article |  | 18 Oct 2023

Stirring across the Antarctic Circumpolar Current's southern boundary at the prime meridian, Weddell Sea

Ria Oelerich, Karen J. Heywood, Gillian M. Damerell, Marcel du Plessis, Louise C. Biddle, and Sebastiaan Swart

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Latest update: 19 May 2024
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Short summary
At the southern boundary of the Antarctic Circumpolar Current, relatively warm waters encounter the colder waters surrounding Antarctica. Observations from underwater vehicles and altimetry show that medium-sized cold-core eddies influence the southern boundary's barrier properties by strengthening the slopes of constant density lines across it and amplifying its associated jet. As a result, the ability of exchanging properties, such as heat, across the southern boundary is reduced.