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

被引：16

作者：

Aoki, Shigeru ^{[1
]}

Sasai, Yoshikazu ^{[2
]}

Sasaki, Hideharu ^{[3
]}

Mitsudera, Humio ^{[1
]}

Williams, Guy D. ^{[1
]}

机构：

[1] Hokkaido Univ, Inst Low Temp Sci, Kita Ku, Sapporo, Hokkaido 0600819, Japan

[2] Japan Agcy Marine Earth Sci & Technol, Frontier Res Ctr Global Change, Yokohama, Kanagawa, Japan

[3] Japan Agcy Marine Earth Sci & Technol, Earth Simulator Ctr, Yokohama, Kanagawa, Japan

来源：

OCEAN DYNAMICS | 2010年 / 60卷 / 03期

关键词：

Cyclonic gyre; Australian-Antarctic basin; Transport; OFES; Iceberg drift; Argo float; LARGE-SCALE CIRCULATION; WATER MASSES; CIRCUMPOLAR CURRENT; SOUTHERN-OCEAN; INDIAN-OCEAN; WEDDELL GYRE; ADELIE LAND; TRANSPORT; SEA; WIND;

D O I：

10.1007/s10236-009-0261-y

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

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 (80-110A degrees A E) and a series of eddies in the east (120-150A degrees A 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.

引用

页码：743 / 757

页数：15

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