Antarctic Bottom Water production from the Vincennes Bay Polynya, East Antarctica

被引：46

作者：

Kitade, Yujiro ^{[1
]}

Shimada, Keishi ^{[1
]}

Tamura, Takeshi ^{[2
,3
]}

Williams, Guy D. ^{[3
]}

Aoki, Shigeru ^{[4
]}

Fukamachi, Yasushi ^{[4
]}

Roquet, Fabien ^{[5
]}

Hindell, Mark ^{[6
]}

Ushio, Shuki ^{[2
]}

Ohshima, Kay I. ^{[4
]}

机构：

[1] Tokyo Univ Marine Sci & Technol, Tokyo, Japan

[2] Natl Inst Polar Res, Tachikawa, Tokyo, Japan

[3] Univ Tasmania, Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas, Australia

[4] Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 060, Japan

[5] Stockholm Univ, Dept Meteorol, S-10691 Stockholm, Sweden

[6] Univ Tasmania, Inst Marine & Antarctic Studies, Hobart, Tas, Australia

来源：

GEOPHYSICAL RESEARCH LETTERS | 2014年 / 41卷 / 10期

关键词：

Antarctic Bottom Water; dense shelf water; sea-ice production; Australian-Antarctic Basin; polynya; 140-DEGREES-E; CIRCULATION; ZONE;

D O I：

10.1002/2014GL059971

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

One year moorings at depths greater than 3000m on the continental slope off Vincennes Bay, East Antarctica, reveal the cold (<-0.5 degrees C) and fresh (<34.64) signals of newly formed Antarctic Bottom Water (AABW). The signal appeared in June, 3 months after the onset of active sea-ice production in the nearby Vincennes Bay Polynya (VBP). The AABW signal continued for about 5 months at two moorings, with 1 month delay at the western site further downstream. Ship-based hydrographic data are in agreement, detecting the westward spread of new AABW over the continental slope from VBP. On the continental shelf, Dense Shelf Water (DSW) formation is observed by instrumented seals, in and around the VBP during autumn, and we estimate its transport to be 0.16 +/- 0.07 (x 106m3s-1). We conclude that the DSW formed in this region, albeit from a modest amount of sea-ice production, nonetheless contributes to the upper layer of AABW in Australian-Antarctic Basin.

引用

页码：3528 / 3534

页数：7

共 24 条

[1] [Anonymous], 2009, Etopo1 arcminute global relief model: Procedures, data sources and analysis
[2] Freshening of the Adelie Land Bottom Water near 140°E -: art. no. L23601
Aoki, S
Rintoul, SR
Ushio, S
Watanabe, S
Bindoff, NL
[J]. GEOPHYSICAL RESEARCH LETTERS, 2005, 32 (23) : 1 - 4
[3] Widespread freshening in the Seasonal Ice Zone near 140°E off the Adelie Land Coast, Antarctica, from 1994 to
Aoki, S.
Kitade, Y.
Shimada, K.
Ohshima, K. I.
Tamura, T.
Bajish, C. C.
Moteki, M.
Rintoul, S. R.
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2013, 118 (11) : 6046 - 6063
[4] THE CONTRIBUTION OF ALASKAN, SIBERIAN, AND CANADIAN COASTAL POLYNYAS TO THE COLD HALOCLINE LAYER OF THE ARCTIC-OCEAN
CAVALIERI, DJ
MARTIN, S
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1994, 99 (C9) : 18343 - 18362
[5] FRONTAL ZONE MIXING AND ANTARCTIC BOTTOM WATER FORMATION IN SOUTHERN WEDDELL SEA
FOSTER, TD
CARMACK, EC
[J]. DEEP-SEA RESEARCH, 1976, 23 (04): : 301 - 317
[6] CIRCULATION AND BOTTOM WATER PRODUCTION IN WEDDELL SEA
GILL, AE
[J]. DEEP-SEA RESEARCH, 1973, 20 (02): : 111 - 140
[7] ROSS-SEA OCEANOGRAPHY AND ANTARCTIC BOTTOM WATER FORMATION
JACOBS, SS
AMOS, AF
BRUCHHAU.PM
[J]. DEEP-SEA RESEARCH, 1970, 17 (06): : 935 - &
[8] Bottom water production and its links with the thermohaline circulation
Jacobs, SS
[J]. ANTARCTIC SCIENCE, 2004, 16 (04) : 427 - 437
[9] Large Multidecadal Salinity Trends near the Pacific-Antarctic Continental Margin
Jacobs, Stanley S.
Giulivi, Claudia F.
[J]. JOURNAL OF CLIMATE, 2010, 23 (17) : 4508 - 4524
[10] Warming and Freshening in the Abyssal Southeastern Indian Ocean
Johnson, Gregory C.
Purkey, Sarah G.
Bullister, John L.
[J]. JOURNAL OF CLIMATE, 2008, 21 (20) : 5351 - 5363

← 1 2 3 →