Atmospheric C-14/C-12 changes during the last glacial period from Hulu Cave

doi:10.1126/science.aau0747

	Atmospheric C-14/C-12 changes during the last glacial period from Hulu Cave
	Cheng, Hai 6,7; Edwards, R. Lawrence 7; Southon, John 8; Matsumoto, Katsumi 7; Feinberg, Joshua M.4,7; Sinha, Ashish 3; Zhou, Weijian 2; Li, Hanying 6; Li, Xianglei 6; Xu, Yao 6
刊名	SCIENCE
	2018-12-14
卷号	362 期号:6420 页码:1293-+
ISSN号	0036-8075
DOI	10.1126/science.aau0747
通讯作者	Cheng, Hai(cheng021@xjtu.edu.cn) ; Edwards, R. Lawrence(edwar001@umn.edu)
英文摘要	Paired measurements of C-14/C-12 and Th-230 ages from two Hulu Cave stalagmites complete a precise record of atmospheric C-14 covering the full range of the C-14 dating method (similar to 54,000 years). Over the last glacial period, atmospheric C-14/C-12 ranges from values similar to modern values to values 1.70 times higher (42,000 to 39,000 years ago). The latter correspond to C-14 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 C-14/C-12 values between 25,000 and 11,000 years ago is likely related, in part, to progressively increasing ocean ventilation rates.
资助项目	China NSFC[41888101] ; China NSFC[41731174] ; China NSFC[4157020432] ; China NSFC[41561144003] ; U.S. NSF[0502535] ; U.S. NSF[1103404] ; U.S. NSF[0823554] ; U.S. NSF[1003690] ; U.S. NSF[1137693] ; U.S. NSF[1337693] ; U.S. NSF[1702816] ; Comer Science and Education Foundation
WOS关键词	RADIOCARBON CONSTRAINTS ; C-14 CALIBRATION ; ORGANIC-MATTER ; CARBON-CYCLE ; MONO LAKE ; RECORD ; AGE ; ICE ; LASCHAMP ; ATLANTIC
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	AMER ASSOC ADVANCEMENT SCIENCE
WOS记录号	WOS:000452994400053
资助机构	China NSFC ; U.S. NSF ; Comer Science and Education Foundation
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/14519]
专题	地球环境研究所_加速器质谱中心
通讯作者	Cheng, Hai; Edwards, R. Lawrence
作者单位	1.Nanjing Normal Univ, Coll Geog Sci, Nanjing, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Xian, Shaanxi, Peoples R China 3.Calif State Univ Dominguez Hills, Dept Earth Sci, Carson, CA 90747 USA 4.Univ Minnesota, Inst Rock Magnetism, Minneapolis, MN USA 5.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 6.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Shaanxi, Peoples R China 7.Univ Minnesota, Dept Earth Sci, Minneapolis, MN 55455 USA 8.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA USA
推荐引用方式 GB/T 7714	Cheng, Hai,Edwards, R. Lawrence,Southon, John,et al. Atmospheric C-14/C-12 changes during the last glacial period from Hulu Cave[J]. SCIENCE,2018,362(6420):1293-+.
APA	Cheng, Hai.,Edwards, R. Lawrence.,Southon, John.,Matsumoto, Katsumi.,Feinberg, Joshua M..,...&Ning, Youfeng.(2018).Atmospheric C-14/C-12 changes during the last glacial period from Hulu Cave.SCIENCE,362(6420),1293-+.
MLA	Cheng, Hai,et al."Atmospheric C-14/C-12 changes during the last glacial period from Hulu Cave".SCIENCE 362.6420(2018):1293-+.