globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2016.02.005
Scopus记录号: 2-s2.0-84958984750
论文题名:
High-precision dating and correlation of ice, marine and terrestrial sequences spanning Heinrich Event 3: Testing mechanisms of interhemispheric change using New Zealand ancient kauri (Agathis australis)
作者: Turney C.S.M.; Palmer J.; Bronk Ramsey C.; Adolphi F.; Muscheler R.; Hughen K.A.; Staff R.A.; Jones R.T.; Thomas Z.A.; Fogwill C.J.; Hogg A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 137
起始页码: 126
结束页码: 134
语种: 英语
英文关键词: Abrupt climate change ; Antarctic Isotope Maximum-4 (AIM4) ; Atmospheric radiocarbon (14C) ; Bipolar seesaw ; Extreme events ; Heinrich-3 (H3) ; Tree-ring
Scopus关键词: Atmospheric chemistry ; Forestry ; Ice ; Isotopes ; Oceanography ; Abrupt climate change ; Antarctic isotope maximum ; Bipolar seesaw ; Extreme events ; Heinrich-3 (H3) ; Tree rings ; Climate change ; Agathis australis
英文摘要: Robustly testing hypotheses of geographic synchroneity of abrupt and extreme change during the late Pleistocene (60,000 to 11,650 years ago) requires a level of chronological precision often lacking in ice, marine and terrestrial sequences. Here we report a bidecadally-resolved New Zealand kauri (Agathis australis) tree-ring sequence spanning two millennia that preserves a record of atmospheric radiocarbon (14C) during ice-rafted debris event Heinrich Event 3 (HE3) in the North Atlantic and Antarctic Isotope Maximum 4 (AIM4) in the Southern Hemisphere. Using 14C in the marine Cariaco Basin and 10Be preserved in Greenland ice, the kauri 14C sequence allows us to precisely align sequences across this period. We observe no significant difference between atmospheric and marine 14C records during HE3, suggesting no stratification of surface waters and collapse in Atlantic Meridional Overturning Circulation (AMOC). Instead our results support recent evidence for a weakened AMOC across at least two millennia of the glacial period. Our work adds to a growing body of literature confirming that Heinrich events are not the cause of stadial cooling and suggests changes in the AMOC were not the primary driver of antiphase temperature trends between the hemispheres. Decadally-resolved 14C in ancient kauri offers a powerful new (and complementary) approach to polar ice core CH4 alignment for testing hypotheses of abrupt and extreme climate change. © 2016 Elsevier Ltd.
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被引频次[WOS]:21   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59652
Appears in Collections:过去全球变化的重建

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作者单位: Climate Change Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia; Research Laboratory for Archaeology and the History of Art, University of Oxford, Dyson Perrins Building, South Parks Road, Oxford, United Kingdom; Department of Geology-Quaternary Sciences, Lund University, Lund, Sweden; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic InstitutionMA, United States; Department of Geography, Exeter University, Devon, United Kingdom; Waikato Radiocarbon Laboratory, University of Waikato, Private Bag 3105, Hamilton, New Zealand

Recommended Citation:
Turney C.S.M.,Palmer J.,Bronk Ramsey C.,et al. High-precision dating and correlation of ice, marine and terrestrial sequences spanning Heinrich Event 3: Testing mechanisms of interhemispheric change using New Zealand ancient kauri (Agathis australis)[J]. Quaternary Science Reviews,2016-01-01,137
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