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Geological record of meltwater events at Qinghai Lake, China from the past 40 ka
Zhou, Weijian1,2,3,4; Liu, Taibei1,6; Wang, Hao1,2,3,4; An, Zhisheng1,5; Cheng, Peng1,2,3,4; Zhu, Yizhi1,2,3,4; Burr, G. S.1,2,3,4
2016-10-01
发表期刊QUATERNARY SCIENCE REVIEWS
卷号149期号:2016页码:279-287
文章类型Article
摘要We report here on a previously unpublished sediment core from Qinghai Lake, China, that preserves a continuous record of sedimentation for the past 40 ka. A striking feature of the record is a set of distinct meltwater events recorded at 35, 19 and 14 ka respectively. These events are manifest as distinct pulses of relatively old organic radiocarbon in the sediments. We interpret these as a signal of glacial melting in the Qinghai Lake watershed. The meltwater signals are closely correlated to temperature and precipitation records associated with deglaciation. The events at 19 ka and 14 ka correspond to well-established high latitude Melt Water Pulse (MWP) events during Marine Isotope Stage (MIS) 2, and the 35 ka event corresponds to a period of pervasive high lake levels in western China during late MIS 3. We interpret these anomalous dates as the result of relatively old carbon that was destabilized by the glaciers, and released into the lake as the glaciers melted. The data indicate that this process takes thousands of years. We expect that the approach employed here to identify these events is generally applicable to any lake system with a significant glacial meltwater component. (C) 2016 Elsevier Ltd. All rights reserved.
关键词Lacustrine Record Radiocarbon Dating Total Organic Carbon Meltwater Event Old Carbon Effect
WOS标题词Science & Technology ; Physical Sciences
DOI10.1016/j.quascirev.2016.08.005
关键词[WOS]NORTHEASTERN TIBETAN PLATEAU ; ATMOSPHERIC CIRCULATION ; STEPPED-COMBUSTION ; LAST DEGLACIATION ; ASIAN MONSOON ; CLIMATE ; BE-10 ; PRECIPITATION ; VARIABILITY ; HOLOCENE
收录类别SCI
语种英语
WOS研究方向Physical Geography ; Geology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号WOS:000383825400019
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5684
专题加速器质谱中心
作者单位1.Chinese Acad Sci IEECAS, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.IEECAS, Xian AMS Ctr, Xian 710061, Peoples R China
3.Xi An Jiao Tong Univ, Xian 710061, Peoples R China
4.Prov Key Lab, Xian 710061, Peoples R China
5.Beijing Normal Univ, Beijing 100875, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Zhou, Weijian,Liu, Taibei,Wang, Hao,et al. Geological record of meltwater events at Qinghai Lake, China from the past 40 ka[J]. QUATERNARY SCIENCE REVIEWS,2016,149(2016):279-287.
APA Zhou, Weijian.,Liu, Taibei.,Wang, Hao.,An, Zhisheng.,Cheng, Peng.,...&Burr, G. S..(2016).Geological record of meltwater events at Qinghai Lake, China from the past 40 ka.QUATERNARY SCIENCE REVIEWS,149(2016),279-287.
MLA Zhou, Weijian,et al."Geological record of meltwater events at Qinghai Lake, China from the past 40 ka".QUATERNARY SCIENCE REVIEWS 149.2016(2016):279-287.
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