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The cyclonic circulation in the Australian-Antarctic basin simulated by an eddy-resolving general circulation model

Citation

Aoki, S and Sasai, Y and Sasaki, H and Mitsudera, H and Williams, GD, The cyclonic circulation in the Australian-Antarctic basin simulated by an eddy-resolving general circulation model, Ocean Dynamics, 60, (3) pp. 743-757. ISSN 1616-7341 (2010) [Refereed Article]

DOI: doi:10.1007/s10236-009-0261-y

Abstract

Flow structure in the Australian-Antarctic basin is investigated using an eddy-resolving general ocean circulation model and validated with iceberg and middepth float trajectories. A cyclonic circulation system between the Antarctic Circumpolar Current and Antarctic Slope Current consists of a large-scale gyre in the west (80-110 degrees E) and a series of eddies in the east (120-150 degrees E). The western gyre has an annual mean westward transport of 22 Sv in the southern limb. Extending west through the Princess Elizabeth Trough, 5 Sv of the gyre recirculates off Prydz Bay and joins the western boundary current off the Kerguelen Plateau. Iceberg trajectories from QuickScat and ERS-1/2 support this recirculation and the overall structure of the Antarctic Slope Current against isobath in the model. Argo float trajectories also reveal a consistent structure of the deep westward slope current. This study indicates the presence of a large cyclonic circulation in this basin, which is comparable to the Weddell and Ross gyres.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical Oceanography
Objective Division:Environment
Objective Group:Other Environment
Objective Field:Antarctic and Sub-Antarctic Oceanography
Author:Williams, GD (Dr Guy Williams)
ID Code:71466
Year Published:2010
Web of Science® Times Cited:7
Deposited By:Research Division
Deposited On:2011-07-20
Last Modified:2011-07-20
Downloads:0

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