DOI: 10.1002/grl.50679
论文题名: North Atlantic circulation and reservoir age changes over the past 41,000 years
作者: Stern J.V. ; Lisiecki L.E.
刊名: Geophysical Research Letters
ISSN: 0094-8759
EISSN: 1944-8490
出版年: 2013
卷: 40, 期: 14 起始页码: 3693
结束页码: 3697
语种: 英语
英文关键词: Atlantic meridional overturning circulation
; Heinrich Stadial 1
; Mystery Interval
; North Atlantic
; radiocarbon
; reservoir age
Scopus关键词: Atlantic meridional overturning circulations
; Heinrich Stadial 1
; Mystery Interval
; North Atlantic
; radiocarbon
; Earth sciences
; Geophysics
; Oceanography
; age determination
; deglaciation
; insolation
; meridional circulation
; North Atlantic Oscillation
; radiocarbon dating
; water column
英文摘要: Constraints on the timing of Atlantic meridional overturning circulation (AMOC) changes during the last deglaciation are fundamental to understanding the climate's rapid response to insolation forcing. However, uncertainty about high-latitude North Atlantic (HLNA) radiocarbon reservoir ages has previously precluded robust age model development for this critical region. HLNA reservoir ages also serve as a proxy for AMOC strength. We present regionally averaged HLNA reservoir ages for 0 to 41 thousand years before the present (kyr BP) based on over 500 radiocarbon dates from 33 North Atlantic cores. An early deglacial increase to >1000 14C yr reservoir ages between 18.5 and 16.5 kyr BP suggests reduced AMOC before peak Heinrich Stadial 1 (HS1) ice-rafted debris (IRD). A rapid decrease in reservoir ages coincident with the IRD maximum at 16 kyr BP indicates strong stratification of the upper water column caused by massive freshwater release. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883188040&doi=10.1002%2fgrl.50679&partnerID=40&md5=2b1ade1ae350b96554e50e3e14b1425f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6023
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth Science, University of California, Santa Barbara, CA 93106, United States
Recommended Citation:
Stern J.V.,Lisiecki L.E.. North Atlantic circulation and reservoir age changes over the past 41,000 years[J]. Geophysical Research Letters,2013-01-01,40(14).