DOI: 10.1002/2015GL064457
论文题名: Bottom water export from the western Ross Sea, 2007 through 2010
作者: Gordon A.L. ; Huber B.A. ; Busecke J.
刊名: Geophysical Research Letters
ISSN: 0094-9322
EISSN: 1944-9053
出版年: 2015
卷: 42, 期: 13 起始页码: 5387
结束页码: 5394
语种: 英语
英文关键词: Antarctic Bottom Water
; Ross Sea
Scopus关键词: Ocean structures
; Antarctic Bottom Water
; Austral summers
; High salinity shelf waters
; Modified circumpolar deep waters
; Overlying water
; Ross Sea
; Seasonal and interannual variability
; Seasonal cycle
; Saline water
; annual variation
; bottom water
; seasonal variation
; shelf break
; spatiotemporal analysis
; water mass
; Ross Sea
; Southern Ocean
英文摘要: Bottom water export from the Ross Sea, February 2007 to January 2011, exhibits seasonal and interannual variability. Temperature minima coupled to salinity maxima in late austral summer, into the fall, indicate input from High-Salinity Shelf Water (HSSW). Secondary temperature minima lacking the high-salinity trait, characteristic of Low-Salinity Shelf Water (LSSW), appear in the spring. Warmer bottom water similar to modified Circumpolar Deep Water (mCDW) is observed in winter and in early summer. The LSSW and mCDW may be drawn from the Drygalski Basin, as the HSSW pool retreats poleward from the shelf break in response to increased winter polar easterlies allowing these less dense overlying waters to spill into the deep ocean within the benthic layer. Bottom salinity decreased from 2007 to 2011 by 0.007year-1 significantly higher than regional decadal trends, which we propose is a result of HSSW retreat induced by strengthening polar easterlies. Key Points Ross Sea bottom water export variability Significant seasonal cycle and interannual trend Shelf water export regional wind. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938152870&doi=10.1002%2f2015GL064457&partnerID=40&md5=5d0777250047b7f76312198d07d63faf
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8937
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: Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States
Recommended Citation:
Gordon A.L.,Huber B.A.,Busecke J.. Bottom water export from the western Ross Sea, 2007 through 2010[J]. Geophysical Research Letters,2015-01-01,42(13).