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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
2001-12-25
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号176期号:1-4页码:133-146
文章类型Article
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.
关键词Heinrich Events Planktonic Foraminifera Sea Surface Temperature Oxygen Isotopes Okinawa Trough
学科领域Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
收录类别SCI
语种英语
WOS记录号WOS:000173905800007
引用统计
被引频次:95[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/3814
专题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
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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.
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