气候变化领域集成服务门户(CCPortal): Radioisotope constraints of Arctic deep water export to the North Atlantic

CCPortal

DOI	10.1038/s41467-021-23877-4
	Radioisotope constraints of Arctic deep water export to the North Atlantic
	Kipp L.E.; McManus J.F.; Kienast M.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	The export of deep water from the Arctic to the Atlantic contributes to the formation of North Atlantic Deep Water, a crucial component of global ocean circulation. Records of protactinium-231 (231Pa) and thorium-230 (230Th) in Arctic sediments can provide a measure of this export, but well-constrained sedimentary budgets of these isotopes have been difficult to achieve in the Arctic Ocean. Previous studies revealed a deficit of 231Pa in central Arctic sediments, implying that some 231Pa is either transported to the margins, where it may be removed in areas of higher particle flux, or exported from the Arctic via deep water advection. Here we investigate this “missing sink” of Arctic 231Pa and find moderately increased 231Pa deposition along Arctic margins. Nonetheless, we determine that most 231Pa missing from the central basin must be lost via advection into the Nordic Seas, requiring deep water advection of 1.1 – 6.4 Sv through Fram Strait. © 2021, The Author(s).
语种	英语
scopus关键词	protactinium 231; radioisotope; thorium 230; thorium 232; unclassified drug; uranium 235; uranium 238; water; deep water; global ocean; radionuclide; sediment chemistry; advection; Arctic Ocean; Article; Barents Sea; geochemistry; Greenland; isotope analysis; North Atlantic deep water; ocean circulation; oceanography; sea; sediment; surface property; water residence time; water transport; Arctic; Arctic Ocean; Atlantic Ocean; Atlantic Ocean (North); Fram Strait; Norwegian Sea
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251416
作者单位	Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States; Department of Oceanography, Dalhousie University, Halifax, NS, Canada; Department of Environmental Science, Rowan University, Glassboro, NJ, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States
推荐引用方式 GB/T 7714	Kipp L.E.,McManus J.F.,Kienast M.. Radioisotope constraints of Arctic deep water export to the North Atlantic[J],2021,12(1).
APA	Kipp L.E.,McManus J.F.,&Kienast M..(2021).Radioisotope constraints of Arctic deep water export to the North Atlantic.Nature Communications,12(1).
MLA	Kipp L.E.,et al."Radioisotope constraints of Arctic deep water export to the North Atlantic".Nature Communications 12.1(2021).