globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo1889
论文题名:
Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth
作者: Cook C.P.; Van De Flierdt T.; Williams T.; Hemming S.R.; Iwai M.; Kobayashi M.; Jimenez-Espejo F.J.; Escutia C.; González J.J.; Khim B.-K.; McKay R.M.; Passchier S.; Bohaty S.M.; Riesselman C.R.; Tauxe L.; Sugisaki S.; Galindo A.L.; Patterson M.O.; Sangiorgi F.; Pierce E.L.; Brinkhuis H.; Klaus A.; Fehr A.; Bendle J.A.P.; Bijl P.K.; Carr S.A.; Dunbar R.B.; Flores J.A.; Hayden T.G.; Katsuki K.; Kong G.S.; Nakai M.; Olney M.P.; Pekar S.F.; Pross J.; Röhl U.; Sakai T.; Shrivastava P.K.; Stickley C.E.; Tuo S.; Welsh K.; Yamane M.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期:9
起始页码: 765
结束页码: 769
语种: 英语
Scopus关键词: bedrock ; carbon dioxide ; glacial erosion ; highstand ; ice margin ; ice retreat ; ice sheet ; marine sediment ; Pliocene ; sea level ; subglacial environment ; surface water ; Adelie Coast ; Antarctica ; East Antarctica ; Southern Ocean ; Wilkes Subglacial Basin
英文摘要: Warm intervals within the Pliocene epoch (5.33-2.58 million years ago) were characterized by global temperatures comparable to those predicted for the end of this century and atmospheric CO 2 concentrations similar to today. Estimates for global sea level highstands during these times imply possible retreat of the East Antarctic ice sheet, but ice-proximal evidence from the Antarctic margin is scarce. Here we present new data from Pliocene marine sediments recovered offshore of Adélie Land, East Antarctica, that reveal dynamic behaviour of the East Antarctic ice sheet in the vicinity of the low-lying Wilkes Subglacial Basin during times of past climatic warmth. Sedimentary sequences deposited between 5.3 and 3.3 million years ago indicate increases in Southern Ocean surface water productivity, associated with elevated circum-Antarctic temperatures. The geochemical provenance of detrital material deposited during these warm intervals suggests active erosion of continental bedrock from within the Wilkes Subglacial Basin, an area today buried beneath the East Antarctic ice sheet. We interpret this erosion to be associated with retreat of the ice sheet margin several hundreds of kilometres inland and conclude that the East Antarctic ice sheet was sensitive to climatic warmth during the Pliocene. © 2013 Macmillan Publishers Limited. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106713
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Grantham Institute for Climate Change, Imperial College London, South Kensington Campus, Prince Consort Road, London SW7 2AZ, United Kingdom; Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, Prince Consort Road, London SW7 2AZ, United Kingdom; Lamont Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, NY 10964, United States; Department of Earth and Environmental Sciences, Columbia University, NY 10027, United States; Department of Natural Science, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan; Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, D2-2 (510), Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan; Instituto Andaluz de Ciencias de la Tierra, CSIC-UGR, 18100 Armilla, Spain; Department of Oceanography, Pusan National University, Busan 609-735, South Korea; Antarctic Research Centre, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand; Earth and Environmental Studies, Montclair State University, 252 Mallory Hall, 1 Normal Avenue, Montclair, NJ 07043, United States; Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, European Way, SO14 3ZH, Southampton, United Kingdom; Department of Geology, University of Otago, PO Box 56, Dunedin 9054, New Zealand; Department of Marine Science, University of Otago, PO Box 56, Dunedin 9054, New Zealand; Scripps Institution of Oceanography, University of California, San Diego, CA 92093-0220, United States; Department of Earth and Planetary Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Geosciences, Wellesley College, 106 Central Street, Wellesley, MA 02481, United States; United States Implementing Organization, Integrated Ocean Drilling Program, Texas A and M University, 1000 Discovery Drive, College Station, TX 77845, United States; RWTH Aachen University, Institute for Applied Geophysics and Geothermal Energy, Mathieustrasse 6, D-52074 Aachen, Germany; School of Geographical, Earth and Environmental Sciences, AstonWebb Building, University of Birmingham, Edgbaston, B15 2TT, United Kingdom; Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Budapestlaan 4, 3584CD, Utrecht, Netherlands; Department of Chemistry and Geochemistry, Colorado School of Mines, 1500 Illinois Street, Golden, CO 80401, United States; Environmental Earth System Science, Stanford University, Stanford, CA 94305-2115, United States; Department of Geology, Universidad de Salamanca, 37008, Salamanca, Spain; Department of Geology, Western Michigan University, 1187 Rood Hall, 1903 West Michigan Avenue, Kalamazoo, MI 49008, United States; Geological Research Division, Korea Institute of Geoscience and Mineral Resources, 124 Gwahang-no, Yuseong-gu, Daejeon 305-350, South Korea; Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources, 30 Gajeong-dong, Yuseong-gu, Daejeon 305-350, South Korea; Education Department, Daito Bunka University, 1-9-1 Takashima-daira, Itabashi-ku, Tokyo 175-8571, Japan; Department of Geology, University of South Florida, Tampa, 4202 East Fowler Avenue, Tampa, FL 33620, United States; School of Earth and Environmental Sciences, Queens College, 65-30 Kissena Boulevard, Flushing, NY 11367, United States; Paleoenvironmental Dynamics Group, Institute of Geosciences, Goethe-University Frankfurt, Altenhö ferallee 1, 60438 Frankfurt, Germany; MARUM-Center for Marine Environmental Sciences, University of Bremen, Leobener Straße, 28359 Bremen, Germany; Department of Geology, Utsunomiya University, 350 Mine-Machi, Utsunomiya 321-8505, Japan; Polar Studies Division, Geological Survey of India, NH5P, NIT, Faridabad 121001, Haryana, India; Department of Geology, Universitet i Tromsø, N-9037 Tromsø, Norway; State Key Laboratory of Marine Geology, Tongji University, 1239 Spring Road, Shanghai 200092, China; School of Earth Sciences, University of Queensland, St Lucia, Brisbane, QLD 4072, Australia; Earth and Planetary Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

Recommended Citation:
Cook C.P.,Van De Flierdt T.,Williams T.,et al. Dynamic behaviour of the East Antarctic ice sheet during Pliocene warmth[J]. Nature Geoscience,2013-01-01,6(9)
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