Heinrich event imprints in the Okinawa Trough: evidence from oxygen isotope and planktonic foraminifera

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	Heinrich event imprints in the Okinawa Trough: evidence from oxygen isotope and planktonic foraminifera
	Li, TG; Liu, ZX ; Hall, MA ; Berne, S ; Saito, Y ; Cang, SX ; Cheng, ZB
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2001-12-25
卷号	176 期号:1-4 页码:133-146
关键词	Heinrich Events Planktonic Foraminifera Sea Surface Temperature Oxygen Isotopes Okinawa Trough
ISSN号	0031-0182
文献子类	Article
英文摘要	Planktonic foraminiferal faunas, oxygen isotope and modern analog technique sea surface temperature records were obtained in piston core DGKS9603 (28degrees08.869'N, 127degrees16.238'E, water depth 1100 in) collected from the middle Okinawa Trough. During the last glaciation, four cold events were identified and correlate Heinrich events (HE) H2-5 of the last 45 ka. During the last deglaciation, core DGKS9603 has begun to be influenced by the Kuroshio since about 16 cal ka BP. Three weakenings of this warm current occurred at about 2.8-5.3, 11.4 and 15.5 cal ka BP respectively. Among the three fluctuations, the oldest one is synchronous with HE1 and could be a response to the strong cooling observed in the North Atlantic Ocean. The fluctuation occurring at about 11.4 cal ka ago corresponds to the Younger Dryas within the age error bars. Our observations provide new evidence that the HEs documented from Greenland and the northern North Atlantic had a global climatic impact. Changes in the intensity of the East Asian monsoon could be the main mechanism responsible for the paleoccanographic variations observed in the Okinawa Trough. (C) 2001 Elsevier Science B.V. All rights reserved.; Planktonic foraminiferal faunas, oxygen isotope and modern analog technique sea surface temperature records were obtained in piston core DGKS9603 (28degrees08.869'N, 127degrees16.238'E, water depth 1100 in) collected from the middle Okinawa Trough. During the last glaciation, four cold events were identified and correlate Heinrich events (HE) H2-5 of the last 45 ka. During the last deglaciation, core DGKS9603 has begun to be influenced by the Kuroshio since about 16 cal ka BP. Three weakenings of this warm current occurred at about 2.8-5.3, 11.4 and 15.5 cal ka BP respectively. Among the three fluctuations, the oldest one is synchronous with HE1 and could be a response to the strong cooling observed in the North Atlantic Ocean. The fluctuation occurring at about 11.4 cal ka ago corresponds to the Younger Dryas within the age error bars. Our observations provide new evidence that the HEs documented from Greenland and the northern North Atlantic had a global climatic impact. Changes in the intensity of the East Asian monsoon could be the main mechanism responsible for the paleoccanographic variations observed in the Okinawa Trough. (C) 2001 Elsevier Science B.V. All rights reserved.
学科主题	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
语种	英语
WOS记录号	WOS:000173905800007
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/3815]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Acad Sinica, Inst Oceanol, Qingdao 266071, Peoples R China 2.SOA, Inst Oceanog 1, Qingdao 266003, Peoples R China 3.Univ Cambridge, Godwin Inst Quaternary Res, Cambridge CB2 3RS, England 4.IFREMER, French Oceanog Inst, F-29280 Plouzane, France 5.Geol Survey Japan, Tsukuba, Ibaraki 3058567, Japan
推荐引用方式 GB/T 7714	Li, TG,Liu, ZX,Hall, MA,et al. Heinrich event imprints in the Okinawa Trough: evidence from oxygen isotope and planktonic foraminifera[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2001,176(1-4):133-146.
APA	Li, TG.,Liu, ZX.,Hall, MA.,Berne, S.,Saito, Y.,...&Cheng, ZB.(2001).Heinrich event imprints in the Okinawa Trough: evidence from oxygen isotope and planktonic foraminifera.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,176(1-4),133-146.
MLA	Li, TG,et al."Heinrich event imprints in the Okinawa Trough: evidence from oxygen isotope and planktonic foraminifera".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 176.1-4(2001):133-146.