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DOI	10.1073/pnas.1705595114
	Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion
	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.
发表日期	2017
ISSN	0027-8424
起始页码	10035
结束页码	10040
卷号	114 期号:38
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.
英文关键词	Aerosol; Climate; Deglaciation; Ozone; Volcanism
语种	英语
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
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159056
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...
推荐引用方式 GB/T 7714	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],2017,114(38).
APA	McConnell J.R..,Burke A..,Dunbar N.W..,Köhler P..,Thomas J.L..,...&Winckler G..(2017).Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion.Proceedings of the National Academy of Sciences of the United States of America,114(38).
MLA	McConnell J.R.,et al."Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion".Proceedings of the National Academy of Sciences of the United States of America 114.38(2017).