气候变化领域集成服务门户(CCPortal): The Last Glacial Maximum

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DOI	10.1126/science.1172873
	The Last Glacial Maximum
	Clark P.U.; Dyke A.S.; Shakun J.D.; Carlson A.E.; Clark J.; Wohlfarth B.; Mitrovica J.X.; Hostetler S.W.; McCabe A.M.
发表日期	2009
ISSN	0036-8075
起始页码	710
结束页码	714
卷号	325 期号:5941
英文摘要	We used 5704 14C, 10Be, and 3He ages that span the interval from 10,000 to 50,000 years ago (10 to 50 ka) to constrain the timing of the Last Glacial Maximum (LGM) in terms of global ice-sheet and mountain-glacier extent. Growth of the ice sheets to their maximum positions occurred between 33.0 and 26.5 ka in response to climate forcing from decreases in northern summer insolation, tropical Pacific sea surface temperatures, and atmospheric CO2. Nearly all ice sheets were at their LGM positions from 26.5 ka to 19 to 20 ka, corresponding to minima in these forcings. The onset of Northern Hemisphere deglaciation 19 to 20 ka was induced by an increase in northern summer insolation, providing the source for an abrupt rise in sea level. The onset of deglaciation of the West Antarctic Ice Sheet occurred between 14 and 15 ka, consistent with evidence that this was the primary source for an abrupt rise in sea level ∼14.5 ka.
英文关键词	beryllium; carbon 14; carbon dioxide; helium; deglaciation; ice sheet; insolation; Last Glacial Maximum; Northern Hemisphere; Antarctica; article; climate; deglaciation; glacial period; ice sheet; priority journal; sea level; sea surface temperature; summer; sunlight; Antarctica; Pacific Ocean; West Antarctic Ice Sheet; West Antarctica
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/243339
作者单位	Department of Geosdences, Oregon State University, Corvallis, OR 97331, United States; Geological Survey of Canada, 601 Booth Street, Ottawa, ON K1A 0E8, Canada; Department of Geology and Geophysics, University of Wisconsin, Madison, WI 53706, United States; Department of Geology and Geochemistry, Stockholm University, SE-10691, Stockholm, Sweden; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, United States; U.S. Geological Survey, Department of Geosdences, Oregon State University, Corvallis, OR 97331, United States; School of Environmental Sdence, University of Ulster, Coleraine, County Londonderry, BT52 1SA, United Kingdom
推荐引用方式 GB/T 7714	Clark P.U.,Dyke A.S.,Shakun J.D.,et al. The Last Glacial Maximum[J],2009,325(5941).
APA	Clark P.U..,Dyke A.S..,Shakun J.D..,Carlson A.E..,Clark J..,...&McCabe A.M..(2009).The Last Glacial Maximum.Science,325(5941).
MLA	Clark P.U.,et al."The Last Glacial Maximum".Science 325.5941(2009).