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Watts, D. R., University of Rhode Island, Narragansett, RI, USA, rwatts@gso.uri.edu
Donohue, K. A., University of Rhode Island, Narragansett, RI, USA, kdonohue@gso.uri.edu
Tracey, K. L., University of Rhode Island, Narragansett, RI, USA, ktracey@gso.uri.edu

THE SLOWLY VARYING MEAN KUROSHIO EXTENSION CURRENT TRANSPORT FROM SEA SURFACE TO SEA FLOOR

Centered near 35N, 146E east of Japan, the Kuroshio Extension System Study (KESS) moored a 550 X 550 km grid of current-and-pressure-recording inverted echo sounders. The array observed the time-varying horizontal current structure along its mean path and within the neighboring recirculations. Mapped total-transport streamlines distinguish the through-flowing portion of the Kuroshio from closed recirculations. An anticyclonic southern recirculation gyre (SRG) is centered near 34.5N, 144E. The northern recirculation gyre is downstream from the KESS array, and within KESS a northern local cyclonic recirculation exists within the trough but is not treated further here. Six-month and ten-month mean transport-maps are calculated respectively over stable and energetic-meandering intervals (units Sverdrup): Stable-regime combined total transport is 133, comprising 57 throughflow and 76 SRG; the baroclinic components are respectively 98, 69 and 29. Unstable-regime combined total transport is 106, comprising 55 throughflow and 51 SRG; the baroclinic components are respectively 78, 41 and 37. Total transport, SRG strength, and baroclinic total and throughflow decrease in the unstable regime.

http://www.po.gso.uri.edu/dynamics/

Poster presentation

Session #:020
Date: 2/23/2012
Time: 17:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: B1400