Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1705595114 |
Synchronous volcanic eruptions and abrupt climate change ∼17.7 ka plausibly linked by stratospheric ozone depletion | |
Joseph R. McConnell; Andrea Burke; Nelia W. Dunbar; Peter Köhler; Jennie L. Thomas; Monica M. Arienzo; Nathan J. Chellman; Olivia J. Maselli; Michael Sigl; Jess F. Adkins; Daniel Baggenstos; John F. Burkhart; Edward J. Brook; Christo Buizert; Jihong Cole-Dai; T. J. Fudge; Gregor Knorr; Hans-F. Graf; Mackenzie M. Grieman; Nels Iverson; Kenneth C. McGwire; Robert Mulvaney; Guillaume Paris; Rachael H. Rhodes; Eric S. Saltzman; Jeffrey P. Severinghaus; Jørgen Peder Steffensen; Kendrick C. Taylor; and Gisela Winckler | |
2017-09-05 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
出版年 | 2017 |
卷号 | 114期号:38页码:10035-10040 |
英文摘要 | AbstractGlacial-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. |
英文关键词 | climate deglaciation volcanism ozone aerosol |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204782 |
专题 | 地球科学 资源环境科学 气候变化 |
推荐引用方式 GB/T 7714 | Joseph R. McConnell,Andrea Burke,Nelia W. Dunbar,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,2017,114(38):10035-10040. |
APA | Joseph R. McConnell.,Andrea Burke.,Nelia W. Dunbar.,Peter Köhler.,Jennie L. Thomas.,...&and Gisela Winckler.(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),10035-10040. |
MLA | Joseph R. McConnell,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):10035-10040. |
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