globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1705595114
论文题名:
Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion
作者: McConnell J.R.; Burke A.; Dunbar N.W.; Köhler P.; Thomas J.L.; Arienzo M.M.; Chellman N.J.; Maselli O.J.; Sigl M.; Adkins J.F.; Baggenstos D.; Burkhart J.F.; Brook E.J.; Buizert C.; Cole-Dai J.; Fudge T.J.; Knorr G.; Graf H.-F.; Grieman M.M.; Iverson N.; McGwire K.C.; Mulvaney R.; Paris G.; Rhodes R.H.; Saltzman E.S.; Severinghaus J.P.; Steffensen J.P.; Taylor K.C.; Winckler G.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2017
卷: 114, 期:38
起始页码: 10035
结束页码: 10040
语种: 英语
英文关键词: Aerosol ; Climate ; Deglaciation ; Ozone ; Volcanism
Scopus关键词: bromine ; sulfur ; Antarctica ; Article ; climate change ; deglaciation ; fallout ; greenhouse gas ; ozone depletion ; ozone layer ; priority journal ; ultraviolet radiation ; volcanic ash ; volcano
英文摘要: Glacial-state greenhouse gas concentrations and Southern Hemisphere climate conditions persisted until ~17.7 ka, when a nearly synchronous acceleration in deglaciation was recorded in paleoclimate proxies in large parts of the Southern Hemisphere, with many changes ascribed to a sudden poleward shift in the Southern Hemisphere westerlies and subsequent climate impacts. We used high-resolution chemical measurements in the West Antarctic Ice Sheet Divide, Byrd, and other ice cores to document a unique, ~192-y series of halogen-rich volcanic eruptions exactly at the start of accelerated deglaciation, with tephra identifying the nearby Mount Takahe volcano as the source. Extensive fallout from these massive eruptions has been found >2,800 km from Mount Takahe. Sulfur isotope anomalies and marked decreases in ice core bromine consistent with increased surface UV radiation indicate that the eruptions led to stratospheric ozone depletion. Rather than a highly improbable coincidence, circulation and climate changes extending from the Antarctic Peninsula to the subtropics—similar to those associated with modern stratospheric ozone depletion over Antarctica—plausibly link the Mount Takahe eruptions to the onset of accelerated Southern Hemisphere deglaciation ~17.7 ka. © 2017, National Academy of Sciences. All rights reserved.
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被引频次[WOS]:55   [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/163793
Appears in Collections:气候变化与战略

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作者单位: McConnell, J.R., Division of Hydrologic Sciences, Desert Research Institute, Reno, NV 89512, United States; Burke, A., School of Earth and Environmental Sciences, University of St. Andrews, St. Andrews, KY16 9AL, United Kingdom; Dunbar, N.W., New Mexico Institute of Mining and Technology, Socorro, NM 87801, United States; Köhler, P., Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, 27512, Germany; Thomas, J.L., Sorbonne Université, Pierre and Marie Curie University, Université Versailles St-Quentin, CNRS, Institut National des Sciences de l’Univers, Laboratoire Atmosphères, Milieux, Observations Spatiales, Institut Pierre Simon Laplace, Paris, 75252, France; Arienzo, M.M., Division of Hydrologic Sciences, Desert Research Institute, Reno, NV 89512, United States; Chellman, N.J., Division of Hydrologic Sciences, Desert Research Institute, Reno, NV 89512, United States; Maselli, O.J., Division of Hydrologic Sciences, Desert Research Institute, Reno, NV 89512, United States; Sigl, M., Division of Hydrologic Sciences, Desert Research Institute, Reno, NV 89512, United States; Adkins, J.F., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States; Baggenstos, D., Scripps Institution of Oceanography, University of California, San Diego, San Diego, CA 92093, United States; Burkhart, J.F., Department of Geosciences, University of Oslo, Oslo, NO-0316, Norway; Brook, E.J., College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, United States; Buizert, C., College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, United States; Cole-Dai, J., Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD 57007, United States; Fudge, T.J., Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, United States; Knorr, G., Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, 27512, Germany; Graf, H.-F., Centre for Atmospheric Science, University of Cambridge, Cambridge, CB2 3EN, United Kingdom; Grieman, M.M., Department of Earth System Science, University of California, Irvine, CA 92617, United States; Iverson, N., New Mexico Institute of Mining and Technology, Socorro, NM 87801, United States; McGwire, K.C., Division of Earth and Ecosystem Sciences, Desert Research Institute, Reno, NV 89512, United States; Mulvaney, R., British Antarctic Survey, Cambridge, CB3 OET, United Kingdom; Paris, G., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States; Rhodes, R.H., College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, United States, Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, United Kingdom; Saltzman, E.S., Department of Earth System Science, University of California, Irvine, CA 92617, United States; Severinghaus, J.P., Scripps Institution of Oceanography, University of California, San Diego, San Diego, CA 92093, United States; Steffensen, J.P., Centre for Ice and Climate, University of Copenhagen, Copenhagen, DK-1017, Denmark; Taylor, K.C., Division of Hydrologic Sciences, Desert Research Institute, Reno, NV 89512, United States; Winckler, G., Lamont-Doherty Earth Observatory, Earth Institute at Columbia University, Palisades, NY 10964, United States

Recommended Citation:
McConnell J.R.,Burke A.,Dunbar N.W.,et al. Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion[J]. Proceedings of the National Academy of Sciences of the United States of America,2017-01-01,114(38)
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