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| DOI | 10.1126/science.abb8677 |
| A global environmental crisis 42,000 years ago | |
| Cooper A.; Turney C.S.M.; Palmer J.; Hogg A.; McGlone M.; Wilmshurst J.; Lorrey A.M.; Heaton T.J.; Russell J.M.; McCracken K.; Anet J.G.; Rozanov E.; Friedel M.; Suter I.; Peter T.; Muscheler R.; Adolphi F.; Dosseto A.; Tyler Faith J.; Fenwick P.; Fogwill C.J.; Hughen K.; Lipson M.; Liu J.; Nowaczyk N.; Rainsley E.; Ramsey C.B.; Sebastianelli P.; Souilmi Y.; Stevenson J.; Thomas Z.; Tobler R.; Zech R. | |
| 发表日期 | 2021 |
| ISSN | 0036-8075 |
| 起始页码 | 811 |
| 结束页码 | 818 |
| 卷号 | 371期号:6531 |
| 英文摘要 | Geological archives record multiple reversals of Earth’s magnetic poles, but the global impacts of these events, if any, remain unclear. Uncertain radiocarbon calibration has limited investigation of the potential effects of the last major magnetic inversion, known as the Laschamps Excursion [41 to 42 thousand years ago (ka)]. We use ancient New Zealand kauri trees (Agathis australis) to develop a detailed record of atmospheric radiocarbon levels across the Laschamps Excursion. We precisely characterize the geomagnetic reversal and perform global chemistry-climate modeling and detailed radiocarbon dating of paleoenvironmental records to investigate impacts. We find that geomagnetic field minima ~42 ka, in combination with Grand Solar Minima, caused substantial changes in atmospheric ozone concentration and circulation, driving synchronous global climate shifts that caused major environmental changes, extinction events, and transformations in the archaeological record. © 2021 American Association for the Advancement of Science. All rights reserved. |
| 英文关键词 | ozone; calibration; climate modeling; geomagnetic field; global climate; magnetic reversal; radiocarbon dating; archeology; Article; climate; environmental aspects and related phenomena; environmental change; environmental impact; environmental management; environmental monitoring; environmental surveillance; geography; human; magnetic field; nonhuman; radiation measurement; New Zealand; Agathis australis |
| 语种 | 英语 |
| 来源期刊 | Science
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/243387 |
| 作者单位 | South Australian Museum, Adelaide, SA 5000, Australia; BlueSky Genetics, PO Box 287, Adelaide, SA 5137, Australia; Chronos 14Carbon-Cycle Facility, Earth and Sustainability Science Research Centre, University of New South Wales, Sydney, NSW 2052, Australia; Radiocarbon Dating Laboratory, University of Waikato, Hamilton, 3240, New Zealand; Landcare Research, PO Box 69040, Lincoln, New Zealand; School of Environment, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand; National Institute of Water and Atmospheric Research Ltd, Auckland, 1010, New Zealand; School of Mathematics and Statistics, University of Sheffield, Sheffield, S3 7RH, United Kingdom; Department of Geological Sciences, Brown University, Providence, RI 02912, United States; University of New South Wales, Sydney, NSW 2052, Australia; Zurich University of Applied Sciences, Centre for Aviation, Winterthur, 8401, Switzerland; Institute for Atmospheric and Climatic Science, ETH Zurich, Zurich, 8006, Switzerland; Physikalisc... |
| 推荐引用方式 GB/T 7714 | Cooper A.,Turney C.S.M.,Palmer J.,et al. A global environmental crisis 42,000 years ago[J],2021,371(6531). |
| APA | Cooper A..,Turney C.S.M..,Palmer J..,Hogg A..,McGlone M..,...&Zech R..(2021).A global environmental crisis 42,000 years ago.Science,371(6531). |
| MLA | Cooper A.,et al."A global environmental crisis 42,000 years ago".Science 371.6531(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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