气候变化领域集成服务门户(CCPortal): Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition

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DOI	10.1126/science.aaz2924
	Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition
	Bajo P.; Drysdale R.N.; Woodhead J.D.; Hellstrom J.C.; Hodell D.; Ferretti P.; Voelker A.H.L.; Zanchetta G.; Rodrigues T.; Wolff E.; Tyler J.; Frisia S.; Spötl C.; Fallick A.E.
发表日期	2020
ISSN	0036-8075
起始页码	1235
结束页码	1239
卷号	367 期号:6483
英文摘要	Radiometric dating of glacial terminations over the past 640,000 years suggests pacing by Earth's climatic precession, with each glacial-interglacial period spanning four or five cycles of ∼20,000 years. However, the lack of firm age estimates for older Pleistocene terminations confounds attempts to test the persistence of precession forcing. We combine an Italian speleothem record anchored by a uranium-lead chronology with North Atlantic ocean data to show that the first two deglaciations of the so-called 100,000-year world are separated by two obliquity cycles, with each termination starting at the same high phase of obliquity, but at opposing phases of precession. An assessment of 11 radiometrically dated terminations spanning the past million years suggests that obliquity exerted a persistent influence on not only their initiation but also their duration. © 2020 American Association for the Advancement of Science. All rights reserved.
英文关键词	geochronology; lead; persistence; Pleistocene; radiocarbon dating; speleothem; uranium; article; Atlantic Ocean; chronology; deglaciation; ice age; Middle Pleistocene; Atlantic Ocean; Atlantic Ocean (North)
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/242930
作者单位	School of Geography, University of Melbourne, Carlton, VIC 3053, Australia; Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW 2234, Australia; Croatian Geological Survey, Zagreb, 10000, Croatia; Laboratoire EDYTEM-UMR5204, Université de Savoie Mont Blanc, Le Bourget du Lac, 73376, France; School of Earth Sciences, University of Melbourne, Parkville, VIC 3010, Australia; Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, United Kingdom; Istituto per la Dinamica Dei Processi Ambientali, Consiglio Nazionale Delle Ricerche (IDPA-CNR), Venice, 30172, Italy; Dipartimento di Scienze Ambientali Informatica e Statistica, Università Ca' Foscari, Venice, 30172, Italy; Instituto Português Do Mar e da Atmosfera (IPMA), Divisão de Geologia e Georecursos Marinhos, Alges, 1495-165, Portugal; Centre of Marine Sciences (CCMAR), University of the Algarve, Faro, 8005-139, Portugal; Department of Earth Sciences, University of Pis...
推荐引用方式 GB/T 7714	Bajo P.,Drysdale R.N.,Woodhead J.D.,et al. Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition[J],2020,367(6483).
APA	Bajo P..,Drysdale R.N..,Woodhead J.D..,Hellstrom J.C..,Hodell D..,...&Fallick A.E..(2020).Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition.Science,367(6483).
MLA	Bajo P.,et al."Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition".Science 367.6483(2020).