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Timing and structure of Termination II in north China constrained by a precisely dated stalagmite record

文献类型：期刊论文

作者Duan, Wuhui1,2,3; Cheng, Hai4,5; Tan, Ming1; Li, Xianglei4; Edwards, R. Lawrence5
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2019-04-15
卷号512页码:1-7
关键词Termination II north China speleothem record timing and structure
ISSN号0012-821X
DOI10.1016/j.epsl.2019.01.043
英文摘要The timing and structure of Termination II (T-II) is still debatable as the number of high-quality records is insufficient. This study presents precisely dated stalagmite delta O-18 data between 133.4 +/- 0.3 to 126.6 +/- 0.3 ka BP (covering most of T-11) from north China, near the northern limit of the East Asian summer monsoon (EASM), an area sensitive to climate change. The onset of the last interglacial is constrained at 129.4 +/- 0.3 ka BP, consistent with south Chinese speleothem records, further supporting the idea that Northern Hemisphere summer insolation plays an important role in initiating glacial terminations. An extended interval of heavy delta O-18 is observed immediately prior to this abrupt transition, named as the "Weak Monsoon Interval" (WMI) in south Chinese cave records, which was associated with the Heinrich Stadial 11 (H11) in the North Atlantic. A significant millennial-scale interstadial peaking at 132.7 +/- 0.3 ka BP is identified preceding the weakest phase of the WMI. A synchronous counterpart is also found in some south Chinese speleothem and North Atlantic alkenone Mg/Ca SST records. It is inferred that the main H11 freshwater penetration possibly occurred after 131.5 ka BP, leaving some aspects of ocean and atmospheric circulation still in interstadial mode from 134 to 131.5 ka BP. Following the onset of the last interglacial, there was a millennial-scale "pause" in our delta O-18 record, synchronized with a "slowdown" in the rate of decrease in delta O-18 in south Chinese cave records. This is possibly a large regional climate oscillation, as it is also identified in some North Atlantic records, but one which is too weak to be a Younger Dryas (YD)-type event. In summary, compared to south Chinese cave records, significant millennial-scale climate oscillations before and after the synchronous onset of the last interglacial is the main feature of our record. Nevertheless, the sequence of these climate events remains very different from Termination I (T-I), which is possibly ascribed to the stronger insolation, higher atmosphere CO2, and the resultant faster and greater meltwater pulse to the North Atlantic during T-II than during T-I. (C) 2019 Elsevier B.V. All rights reserved.
WOS关键词ASIAN MONSOON ; MILLENNIAL-SCALE ; HIGH-RESOLUTION ; HULU CAVE ; INDIAN MONSOON ; CLIMATE-CHANGE ; DONGGE CAVE ; ICE ; VARIABILITY ; TRANSITIONS
资助项目National Natural Science Foundation of China[41472150] ; National Natural Science Foundation of China[41772184] ; National Natural Science Foundation of China[41402164] ; National Natural Science Foundation of China[41731174] ; National Natural Science Foundation of China[41888101] ; U.S. NSF[1702816] ; International Postdoctoral Exchange Fellowship Program[20160093]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000462106300001
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; U.S. NSF ; U.S. NSF ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; U.S. NSF ; U.S. NSF ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; U.S. NSF ; U.S. NSF ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; U.S. NSF ; U.S. NSF ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program
源URL[http://ir.iggcas.ac.cn/handle/132A11/91085]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Duan, Wuhui; Tan, Ming
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
3.Univ New South Wales, Connected Waters Initiat Res Ctr, Sydney, NSW 2052, Australia
4.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Shaanxi, Peoples R China
5.Univ Minnesota, Dept Earth Sci, Minneapolis, MN 55455 USA
推荐引用方式
GB/T 7714		 Duan, Wuhui,Cheng, Hai,Tan, Ming,et al. Timing and structure of Termination II in north China constrained by a precisely dated stalagmite record[J]. EARTH AND PLANETARY SCIENCE LETTERS,2019,512:1-7.
APA Duan, Wuhui,Cheng, Hai,Tan, Ming,Li, Xianglei,&Edwards, R. Lawrence.(2019).Timing and structure of Termination II in north China constrained by a precisely dated stalagmite record.EARTH AND PLANETARY SCIENCE LETTERS,512,1-7.
MLA Duan, Wuhui,et al."Timing and structure of Termination II in north China constrained by a precisely dated stalagmite record".EARTH AND PLANETARY SCIENCE LETTERS 512(2019):1-7.

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来源：地质与地球物理研究所

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