DOI: 10.1002/2016GL069479
论文题名: Controls on circulation, cross-shelf exchange, and dense water formation in an Antarctic polynya
作者: Snow K. ; Sloyan B.M. ; Rintoul S.R. ; Hogg A.M. ; Downes S.M.
刊名: Geophysical Research Letters
ISSN: 0094-8892
EISSN: 1944-8623
出版年: 2016
卷: 43, 期: 13 起始页码: 7089
结束页码: 7096
语种: 英语
英文关键词: Antarctic bottom water
; Antarctic shelf circulation
; cross-shelf exchange
; seasonal/interannual variability
; surface fluxes
Scopus关键词: Buoyancy
; Geographical regions
; Heat flux
; Sea ice
; Antarctic Bottom Water
; Antarctic shelf
; Cross-shelf exchange
; Seasonal/interannual variability
; Surface flux
; Stream flow
英文摘要: Circulation on the Antarctic continental shelf influences cross-shelf exchange, Antarctic Bottom Water formation, and ocean heat flux to floating ice shelves. The physical processes driving the shelf circulation and its seasonal and interannual variability remain poorly understood. We use a unique time series of repeat hydrographic observations from the Adélie Land continental shelf and a box inverse model to explore the relationship between surface forcing, shelf circulation, cross-shelf exchange, and dense water formation. A wind-driven northwestward coastal current, set up by onshore Ekman transport, dominates the summer circulation. During winter, strong buoyancy loss creates dense shelf water. This dense water flows off the shelf, with a compensating on-shelf flow that is an order of magnitude larger in winter than in summer. The results demonstrate the importance of winter buoyancy loss in driving the shelf circulation and cross-shelf exchange, as well as dense water mass formation. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978193461&doi=10.1002%2f2016GL069479&partnerID=40&md5=be702c593d4648cf5a4799bb27926639
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9855
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: ARC Centre of Excellence for Climate System Science and Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia
Recommended Citation:
Snow K.,Sloyan B.M.,Rintoul S.R.,et al. Controls on circulation, cross-shelf exchange, and dense water formation in an Antarctic polynya[J]. Geophysical Research Letters,2016-01-01,43(13).