气候变化领域集成服务门户(CCPortal): An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica

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DOI	10.5194/cp-16-1691-2020
	An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica
	Lee J.E.; Brook E.J.; Bertler N.A.N.; Buizert C.; Baisden T.; Blunier T.; Gabriela Ciobanu V.; Conway H.; Dahl-Jensen D.; Fudge T.J.; Hindmarsh R.; Keller E.D.; Parrenin F.; Severinghaus J.P.; Vallelonga P.; Waddington E.D.; Winstrup M.
发表日期	2020
ISSN	18149324
起始页码	1691
结束页码	1713
卷号	16 期号:5
英文摘要	In 2013 an ice core was recovered from Roosevelt Island, an ice dome between two submarine troughs carved by paleo-ice-streams in the Ross Sea, Antarctica. The ice core is part of the Roosevelt Island Climate Evolution (RICE) project and provides new information about the past configuration of the West Antarctic Ice Sheet (WAIS) and its retreat during the last deglaciation. In this work we present the RICE17 chronology, which establishes the depth-age relationship for the top 754 m of the 763 m core. RICE17 is a composite chronology combining annual layer interpretations for 0-343 m (Winstrup et al., 2019) with new estimates for gas and ice ages based on synchronization of CH4 and d18Oatm records to corresponding records from the WAIS Divide ice core and by modeling of the gas age-ice age difference. Novel aspects of this work include the following: (1) an automated algorithm for multiproxy stratigraphic synchronization of high-resolution gas records; (2) synchronization using centennial-scale variations in methane for preanthropogenic time periods (60-720 m, 1971 CE to 30 ka), a strategy applicable for future ice cores; and (3) the observation of a continuous climate record back to ∼ 65 ka providing evidence that the Roosevelt Island Ice Dome was a constant feature throughout the last glacial period. © 2020 Author(s).
语种	英语
scopus关键词	ice core; ice sheet; sea ice; Antarctica; Roosevelt Island [West Antarctica]; Ross Sea; Southern Ocean; West Antarctica
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153188
作者单位	College of Earth Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, United States; Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand; Gns Science, Gracefield, Lower Hutt, 5010, New Zealand; Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark; Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, United States; British Antarctic Survey, Cambridge, CB3 0ET, United Kingdom; Centre National de la Recherche Scientifique, Institut de Recherche Pour le Développement, Institut des Géosciences de l'Environnement, University Grenoble Alpes, Grenoble, 38000, France; Scripps Institution of Oceanography, University of California, San Diego, CA 92093, United States; Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand
推荐引用方式 GB/T 7714	Lee J.E.,Brook E.J.,Bertler N.A.N.,et al. An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica[J],2020,16(5).
APA	Lee J.E..,Brook E.J..,Bertler N.A.N..,Buizert C..,Baisden T..,...&Winstrup M..(2020).An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica.Climate of the Past,16(5).
MLA	Lee J.E.,et al."An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica".Climate of the Past 16.5(2020).