Reduced Sea Ice Production Due to Upwelled Oceanic Heat Flux in Prydz Bay, East Antarctica

doi:10.1029/2018GL081463

	Reduced Sea Ice Production Due to Upwelled Oceanic Heat Flux in Prydz Bay, East Antarctica
	Guo, Guijun 1,2,3; Shi, Jiuxin 2,3; Gao, Libao 1,2; Tamura, Takeshi 4,5,6; Williams, Guy D.6,7
刊名	GEOPHYSICAL RESEARCH LETTERS
	2019-05-16
卷号	46 期号:9 页码:4782-4789
ISSN号	0094-8276
DOI	10.1029/2018GL081463
英文摘要	The coastal shelf region of East Antarctica is hypothesized to be shielded from the offshore heat of Circumpolar Deep Water (CDW) due to the dynamic barrier of the Antarctic Slope Front. Yet modified CDW (mCDW) intrudes into the coastal environment in key locations, with impacts on dense shelf water formation and ocean/ice shelf interaction that remain largely unquantified. Using moored measurements and conductivity-temperature-depth-instrumented seal hydrographic data collected in Prydz Bay, East Antarctica, we find buoyancy-driven upwelling of mCDW into the subsurface (similar to 50 m) layer of the southeastern embayment. Wintertime convection extends as deep as 300 m, entraining heat of the upwelled mCDW to the surface. Accumulated sensible heat supply to the surface through deep convection during June-July reduces the potential sea ice production by 45% in the Davis Polynya, demonstrating that stronger/warmer mCDW intrusions onto the shelf will likely reduce the shelf water density and threaten Antarctic Bottom Water formation.
资助项目	Japanese Ministry of Education, Culture, Sports, Science and Technology[17H04710]
WOS关键词	BOTTOM WATER FORMATION ; OCEANOGRAPHY ; REGION ; SUPPRESSION ; POLYNYA
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000468869500026
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/24750]
专题	自然资源部第一海洋研究所
通讯作者	Guo, Guijun; Shi, Jiuxin; Gao, Libao
作者单位	1.First Inst Oceanog, Ctr Ocean & Climate Xesearch, Qingdao, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Shandong, Peoples R China 3.Ocean Univ China, Key Lab Phys Oceanog, Qingdao, Shandong, Peoples R China 4.Natl Inst Polar Res, Tachikawa, Tokyo, Japan 5.Grad Univ Adv Studies, SOKENDAI, Tachikawa, Tokyo, Japan 6.Univ Tasmania, Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas, Australia 7.Univ Tasmania, Inst Marine & Antarctic Studies, Hobart, Tas, Australia
推荐引用方式 GB/T 7714	Guo, Guijun,Shi, Jiuxin,Gao, Libao,et al. Reduced Sea Ice Production Due to Upwelled Oceanic Heat Flux in Prydz Bay, East Antarctica[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(9):4782-4789.
APA	Guo, Guijun,Shi, Jiuxin,Gao, Libao,Tamura, Takeshi,&Williams, Guy D..(2019).Reduced Sea Ice Production Due to Upwelled Oceanic Heat Flux in Prydz Bay, East Antarctica.GEOPHYSICAL RESEARCH LETTERS,46(9),4782-4789.
MLA	Guo, Guijun,et al."Reduced Sea Ice Production Due to Upwelled Oceanic Heat Flux in Prydz Bay, East Antarctica".GEOPHYSICAL RESEARCH LETTERS 46.9(2019):4782-4789.