globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2006087117
论文题名:
Asteroid impact; not volcanism; caused the end-Cretaceous dinosaur extinction
作者: Chiarenza A.A.; Farnsworth A.; Mannion P.D.; Lunt D.J.; Valdes P.J.; Morgan J.V.; Allison P.A.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:29
起始页码: 17084
结束页码: 17093
语种: 英语
英文关键词: Chicxulub ; Deccan ; Dinosauria ; End-Cretaceous ; Extinction
Scopus关键词: carbon dioxide ; Article ; astronomy ; controlled study ; cooling ; dinosaur ; end Cretaceous mass extinction ; environmental impact ; environmental impact assessment ; nonhuman ; paleoclimate ; priority journal ; seasonal variation ; warming ; animal ; biological model ; climate ; dinosaur ; fossil ; history ; India ; Mexico ; paleontology ; species extinction ; volcano ; Animals ; Carbon Dioxide ; Climate ; Dinosaurs ; Extinction, Biological ; Fossils ; History, Ancient ; India ; Mexico ; Minor Planets ; Models, Biological ; Paleontology ; Volcanic Eruptions
英文摘要: The Cretaceous/Paleogene mass extinction, 66 Ma, included the demise of non-avian dinosaurs. Intense debate has focused on the relative roles of Deccan volcanism and the Chicxulub asteroid impact as kill mechanisms for this event. Here, we combine fossil-occurrence data with paleoclimate and habitat suitability models to evaluate dinosaur habitability in the wake of various asteroid impact and Deccan volcanism scenarios. Asteroid impact models generate a prolonged cold winter that suppresses potential global dinosaur habitats. Conversely, long-term forcing from Deccan volcanism (carbon dioxide [CO2]-induced warming) leads to increased habitat suitability. Short-term (aerosol cooling) volcanism still allows equatorial habitability. These results support the asteroid impact as the main driver of the non-avian dinosaur extinction. By contrast, induced warming from volcanism mitigated the most extreme effects of asteroid impact, potentially reducing the extinction severity. © 2020 National Academy of Sciences. 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/164128
Appears in Collections:气候变化与战略

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作者单位: Chiarenza, A.A., Department of Earth Science and Engineering, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom, Department of Earth Sciences, University College London, London, WC1E 6BT, United Kingdom; Farnsworth, A., School of Geographical Sciences, University of Bristol, Bristol, BS8 1TH, United Kingdom; Mannion, P.D., Department of Earth Sciences, University College London, London, WC1E 6BT, United Kingdom; Lunt, D.J., School of Geographical Sciences, University of Bristol, Bristol, BS8 1TH, United Kingdom; Valdes, P.J., School of Geographical Sciences, University of Bristol, Bristol, BS8 1TH, United Kingdom; Morgan, J.V., Department of Earth Science and Engineering, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom; Allison, P.A., Department of Earth Science and Engineering, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom

Recommended Citation:
Chiarenza A.A.,Farnsworth A.,Mannion P.D.,et al. Asteroid impact; not volcanism; caused the end-Cretaceous dinosaur extinction[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(29)
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