气候变化领域集成服务门户(CCPortal): A stagnation event in the deep south atlantic during the last interglacial period

CCPortal

DOI	10.1126/science.1256620
	A stagnation event in the deep south atlantic during the last interglacial period
	Hayes C.T.; Martínez-García A.; Hasenfratz A.P.; Jaccard S.L.; Hodell D.A.; Sigman D.M.; Haug G.H.; Anderson R.F.
发表日期	2014
ISSN	0036-8075
起始页码	1514
结束页码	1517
卷号	346 期号:6216
英文摘要	During the last interglacial period, global temperatures were ∼2°C warmer than at present and sea level was 6 to 8 meters higher. Southern Ocean sediments reveal a spike in authigenic uranium 127,000 years ago, within the last interglacial, reflecting decreased oxygenation of deep water by Antarctic Bottom Water (AABW). Unlike ice age reductions in AABW, the interglacial stagnation event appears decoupled from open ocean conditions and may have resulted from coastal freshening due to mass loss from the Antarctic ice sheet. AABW reduction coincided with increased North Atlantic Deep Water (NADW) formation, and the subsequent reinvigoration in AABW coincided with reduced NADW formation. Thus, alternation of deep water formation between the Antarctic and the North Atlantic, believed to characterize ice ages, apparently also occurs in warm climates.
英文关键词	authigenic mineral; deep water; global warming; Last Interglacial; oxygenation; sea level change; uranium; Antarctic bottom water; Antarctica; Article; climate; climate change; coastal waters; glacial period; ice age; ice sheet; interglacial; North Atlantic deep water; oxygen concentration; oxygenation; sea; sea level; sediment; temperature; Atlantic Ocean; ice cover; salinity; Antarctic Ice Sheet; Antarctica; Atlantic Ocean; Atlantic Ocean (North); Atlantic Ocean (South); oxygen; sea water; Atlantic Ocean; Climate Change; Ice Cover; Oxygen; Salinity; Seawater
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243978
作者单位	Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA 02142, United States; Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, United States; Geological Institute, ETH Zürich, Zürich, 8092, Switzerland; Institute of Geological Sciences, Oeschger Centre for Climate Change Research, University of Bern, Bern, 3012, Switzerland; Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, United Kingdom; Department of Geosciences, Princeton University, Princeton, NJ 08544, United States
推荐引用方式 GB/T 7714	Hayes C.T.,Martínez-García A.,Hasenfratz A.P.,et al. A stagnation event in the deep south atlantic during the last interglacial period[J],2014,346(6216).
APA	Hayes C.T..,Martínez-García A..,Hasenfratz A.P..,Jaccard S.L..,Hodell D.A..,...&Anderson R.F..(2014).A stagnation event in the deep south atlantic during the last interglacial period.Science,346(6216).
MLA	Hayes C.T.,et al."A stagnation event in the deep south atlantic during the last interglacial period".Science 346.6216(2014).