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Zapiola Gyre, Velocities and Mixing, New Argo Insights
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2023
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Source: Journal of Geophysical Research: Oceans, 128(6)
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Journal Title:Journal of Geophysical Research: Oceans
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Description:The Zapiola Gyre is a large, full-depth, bottom-intensified, anticyclonic recirculation in the Argentine Basin. It rotates around the Zapiola Drift, a sedimentary rise standing a few hundred meters above the abyssal plain, tall enough to create closed contours of planetary potential vorticity. Hence the gyre has been posited to be an eddy-driven free mode that is damped primarily by the bottom Ekman layer. It describes approximately a zonally elongated ellipse with a zonal semi-major axis of ∼440 km and a meridional semi-minor axis of ∼125 km. Its volume transport is estimated here at ∼110 (±25) × 10 6 m 3 s −1. It has peak depth-averaged meridional velocities of ∼0.06 and ∼0.08 m s −1, and peak depth-averaged zonal velocities
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Source:Journal of Geophysical Research: Oceans, 128(6)
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ISSN:2169-9275;2169-9291;
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Rights Information:CC0 Public Domain
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Compliance:Library
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