The Zapiola Anticyclone: A Lagrangian study of its kinematics in an eddy-permitting ocean model

Journal Article · 05 July 2020 · Deep Sea Research Part 1. Oceanographic Research Papers

DOI: https://doi.org/10.1016/j.dsr.2020.103308 · OSTI ID:1640282

Weijer, Wilbert  ^[1]; Barthel, Alice Marie ^[1]; Veneziani, Milena  ^[1]; Steiner, Hannah ^[2]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
2. United States Naval Academy, Annapolis, MD (United States); Naval Postgraduate School, Monterey, CA (United States)

The Zapiola Anticyclone (ZA) is a strong, O(100 Sv), barotropic vortex in the center of the Argentine Basin that is tied to a bathymetric feature called the Zapiola Rise. It is regionally significant for two reasons: first, the strong vortex is a dynamical barrier that inhibits the lateral exchange of water, and hence has the ability to trap water for a long period of time. Second, its dynamics is governed by a balance between eddy-driven mass convergence and divergent Ekman transport, which gives rise to strong downwelling and Ekman pumping into the bottom boundary layer.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Science (SC). Biological and Environmental Research (BER); USDOE
• Grant/Contract Number: 89233218CNA000001
• OSTI ID: 1640282
• Alternate ID(s): OSTI ID: 1716795
• Report Number(s): LA-UR-19-31078
• Journal Information: Deep Sea Research Part 1. Oceanographic Research Papers, Vol. 164; ISSN 0967-0637
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English