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DOI	10.1016/j.yqres.2015.03.002
	A lake-level chronology based on feldspar luminescence dating of beach ridges at Tangra Yum Co (southern Tibet)
	Rades, Eike F.; Tsukamoto, Sumiko; Frechen, Manfred; Xu, Qiang; Ding, Lin
通讯作者	Rades, EF (通讯作者)
发表日期	2015
ISSN	0033-5894
EISSN	1096-0287
起始页码	469
结束页码	478
卷号	83 期号:3
英文摘要	Many lakes on the Tibetan Plateau exhibit strandplains with a series of beach ridges extending high above the current lake levels. These beach ridges mark former lake highstands and therefore dating their formation allows the reconstruction of lake-level histories and environmental changes. In this study, we establish a lake-level chronology of Tangra Yum Co (fifth largest lake on the Tibetan Plateau) based on luminescence dating of feldspar from 17 beach-ridge samples. The samples were collected from two strandplains southeast and north of the lake and range in elevation from the current shore to 140 m above the present lake. Using a modified post-infrared IRSL protocol at 170 degrees C we successfully minimised the anomalous fading in the feldspar IRSL signal, and obtained reliable dating results. The luminescence ages indicate three different stages of lake-level decline during the Holocene: (I) a phase of rapid decline (similar to 50 m) from similar to 6.4 to similar to 4.5 ka, (2) a period of slow decline between similar to 4.5 and similar to 2.0 ka (similar to 20 m), and (3) a fast decline by 70 m between similar to 2 ka and today. Our findings suggest a link between a decrease in monsoonal activity and lake-level decline since the early Holocene. (C) 2015 University of Washington. Published by Elsevier Inc. All rights reserved.
关键词	ASIAN MONSOON LACUSTRINE SEDIMENTS EXPOSURE AGES LATE-HOLOCENE IRSL SIGNALS NAM CO PLATEAU CLIMATE RATES ISOTOPES
英文关键词	Tibetan Plateau; Paleoclimate; Lake-level change; Holocene; Luminescence dating
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000355780700008
来源期刊	QUATERNARY RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258536
推荐引用方式 GB/T 7714	Rades, Eike F.,Tsukamoto, Sumiko,Frechen, Manfred,et al. A lake-level chronology based on feldspar luminescence dating of beach ridges at Tangra Yum Co (southern Tibet)[J]. 中国科学院青藏高原研究所,2015,83(3).
APA	Rades, Eike F.,Tsukamoto, Sumiko,Frechen, Manfred,Xu, Qiang,&Ding, Lin.(2015).A lake-level chronology based on feldspar luminescence dating of beach ridges at Tangra Yum Co (southern Tibet).QUATERNARY RESEARCH,83(3).
MLA	Rades, Eike F.,et al."A lake-level chronology based on feldspar luminescence dating of beach ridges at Tangra Yum Co (southern Tibet)".QUATERNARY RESEARCH 83.3(2015).