气候变化领域集成服务门户(CCPortal): Active Nordic Seas deep-water formation during the last glacial maximum

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DOI	10.1038/s41561-022-01050-w
	Active Nordic Seas deep-water formation during the last glacial maximum
	Larkin, Christina S.; Ezat, Mohamed M.; Roberts, Natalie L.; Bauch, Henning A.; Spielhagen, Robert F.; Noormets, Riko; Polyak, Leonid; Moreton, Steven G.; Rasmussen, Tine L.; Sarnthein, Michael; Tipper, Edward T.; Piotrowski, Alex M.
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	925
结束页码	+
卷号	15 期号:11 页码:17
英文摘要	The Nordic Seas are the primary location where the warm waters of the North Atlantic Current densify to form North Atlantic Deep Water, which plays a key part in the modern Atlantic Meridional Overturning Circulation. The formation of dense water in the Nordic Seas and Arctic Ocean and resulting ocean circulation changes were probably driven by and contributed to the regional and global climate of the last glacial maximum (LGM). Here we map the source and degree of mixing of deep water in the Nordic Seas and through the Arctic Gateway (Yermak Plateau) over the past 35 thousand years using neodymium isotopes (epsilon Nd) measured on authigenic phases in deep-sea sediments with a high spatial and temporal resolution. We find that a large-scale reorganization of deep-water formation in the Nordic Seas took place between the LGM (23-18 thousand years ago) and the rapid climate shift that accompanied the subsequent deglaciation (18-10 thousand years ago). We show that homogeneous epsilon Nd signatures across a wide range of sites support LGM deep-water formation in the Nordic Seas. In contrast, during the deglaciation, disparate and spatially variable epsilon Nd values are observed leading to the conclusion that deep-water formation may have been reduced during this time. Deep-water formation in the Nordic Seas that helps to drive the Atlantic Meridional Overturning Circulation was vigorous during the last glacial maximum, much as it is today, and declined during deglaciation, according to neodymium isotope records.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000871290400002
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272583
作者单位	University of Cambridge; NERC National Oceanography Centre; University of Southampton; University of Cambridge; UiT The Arctic University of Tromso; Egyptian Knowledge Bank (EKB); Beni Suef University; Helmholtz Association; Alfred Wegener Institute, Helmholtz Centre for Polar & Marine Research; Helmholtz Association; GEOMAR Helmholtz Center for Ocean Research Kiel; University Centre Svalbard (UNIS); University System of Ohio; Ohio State University; University of Kiel
推荐引用方式 GB/T 7714	Larkin, Christina S.,Ezat, Mohamed M.,Roberts, Natalie L.,et al. Active Nordic Seas deep-water formation during the last glacial maximum[J],2022,15(11):17.
APA	Larkin, Christina S..,Ezat, Mohamed M..,Roberts, Natalie L..,Bauch, Henning A..,Spielhagen, Robert F..,...&Piotrowski, Alex M..(2022).Active Nordic Seas deep-water formation during the last glacial maximum.NATURE GEOSCIENCE,15(11),17.
MLA	Larkin, Christina S.,et al."Active Nordic Seas deep-water formation during the last glacial maximum".NATURE GEOSCIENCE 15.11(2022):17.