Spatial distribution of Ice Shelf Water in front of the Amery Ice Shelf, Antarctica in summer

doi:10.1007/s00343-011-0318-x

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 支撑保障部门 > 海洋信息与计算中心

	Spatial distribution of Ice Shelf Water in front of the Amery Ice Shelf, Antarctica in summer
	Zheng Shaojun 1; Shi Jiuxin 1; Jiao Yutian 1; Ge Renfeng 2
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2011-11
卷号	29 期号:6 页码:1325-1338
关键词	Ice Shelf Water temperature Amery Ice Shelf Antarctica
ISSN号	0254-4059
DOI	10.1007/s00343-011-0318-x
英文摘要	As a unique low-temperature water mass in Antarctic coastal region, the Ice Shelf Water (ISW) is an important component for the formation of the Antarctic Bottom Water (AABW). In this paper, we present a criterion for ISW identification based on freezing point at the sea surface, and we study spatial distribution of ISW in front of the Amery Ice Shelf (AIS) and its flow path in Prydz Bay by analyzing hydrographic data from Australian cruises in 2001 and 2002, as well as Chinese cruises in 2003, 2005, 2006, and 2008, all being made in the austral summer. The relatively cold and fresh ISW occurred as several discrete water blocks with cold cores in front of the AIS, within the depth range of 100-600 m, under the seasonal thermocline. ISW had obvious temporal and spatial variations and the spatial distribution pattern changed greatly after 2005. Most of ISW was concentrated west of 73 degrees E during 2001 to 2003 and 2006, but it was widespread to east in 2005 and 2008. In all observation years, a small amount of cold ISW always occurs at the west end of the AIS front section, where the coldest ISW in the whole section also occurred in 2001, 2003 and 2006. Considering general cyclonic circulation pattern under the AIS, the ISW flowing out from west end of the AIS front might have experienced the longest cooling period under ice shelf, so it would have the lowest temperature. Analysis of data from meridian sections in Prydz Bay in 2003 implied that ISW in the west could spread north to the continental break along the east flank of the Fram Bank near 70.5 degrees E, mix with the upwelling Circumpolar Deep Water and possibly contribute to the formation of AABW.
资助项目	Specialized Research Fund for the Doctoral Program of Higher Education[20100132110016]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000299039400021
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/4177]
专题	支撑保障部门_海洋信息与计算中心
作者单位	1.Ocean Univ China, Minist Educ, Key Lab Phys Oceanog, Qingdao 266100, Peoples R China; 2.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Zheng Shaojun,Shi Jiuxin,Jiao Yutian,et al. Spatial distribution of Ice Shelf Water in front of the Amery Ice Shelf, Antarctica in summer[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2011,29(6):1325-1338.
APA	Zheng Shaojun,Shi Jiuxin,Jiao Yutian,&Ge Renfeng.(2011).Spatial distribution of Ice Shelf Water in front of the Amery Ice Shelf, Antarctica in summer.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,29(6),1325-1338.
MLA	Zheng Shaojun,et al."Spatial distribution of Ice Shelf Water in front of the Amery Ice Shelf, Antarctica in summer".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 29.6(2011):1325-1338.