气候变化领域集成服务门户(CCPortal): Atmospheric 14C/12C changes during the last glacial period from hulu cave

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DOI	10.1126/science.aau0747
	Atmospheric 14C/12C changes during the last glacial period from hulu cave
	Cheng H.; Lawrence Edwards R.; Southon J.; Matsumoto K.; Feinberg J.M.; Sinha A.; Zhou W.; Li H.; Li X.; Xu Y.; Chen S.; Tan M.; Wang Q.; Wang Y.; Ning Y.
发表日期	2018
ISSN	0036-8075
起始页码	1293
结束页码	1297
卷号	362 期号:6420
英文摘要	Paired measurements of 14C/12C and 230Th ages from two Hulu Cave stalagmites complete a precise record of atmospheric 14C covering the full range of the 14C dating method (~54,000 years). Over the last glacial period, atmospheric 14C/12C ranges from values similar to modern values to values 1.70 times higher (42,000 to 39,000 years ago). The latter correspond to 14C ages 5200 years less than calibrated ages and correlate with the Laschamp geomagnetic excursion followed by Heinrich Stadial 4. Millennial-scale variations are largely attributable to Earth’s magnetic field changes and in part to climate-related changes in the oceanic carbon cycle. A progressive shift to lower 14C/12C values between 25,000 and 11,000 years ago is likely related, in part, to progressively increasing ocean ventilation rates. © 2017 The Authors.
英文关键词	carbon; carbon 14; thorium 230; carbon cycle; carbon isotope; deep water ventilation; Heinrich event; Last Glacial; magnetic field; stalagmite; thorium isotope; Article; astronomy; carbon cycle; climate change; controlled study; dendrochronology; glacial period; magnetic field; priority journal; radiometric dating; rock; stalagmite; China; Hulu Cave; Jiangsu
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/243313
作者单位	Institute of Global Environmental Change, Xi’an Jiaotong University, China; Department of Earth Sciences, University of Minnesota, Minneapolis, MN, United States; Department of Earth System Science, University of California, Irvine, CA, United States; Institute for Rock Magnetism, University of Minnesota, Minneapolis, MN, United States; Department of Earth Science, California State University, Dominguez Hills, Carson, CA, United States; Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China; College of Geography Science, Nanjing Normal University, Nanjing, China; Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Cheng H.,Lawrence Edwards R.,Southon J.,et al. Atmospheric 14C/12C changes during the last glacial period from hulu cave[J],2018,362(6420).
APA	Cheng H..,Lawrence Edwards R..,Southon J..,Matsumoto K..,Feinberg J.M..,...&Ning Y..(2018).Atmospheric 14C/12C changes during the last glacial period from hulu cave.Science,362(6420).
MLA	Cheng H.,et al."Atmospheric 14C/12C changes during the last glacial period from hulu cave".Science 362.6420(2018).