Last deglacial and Holocene lake level variations of Qinghai Lake, north-eastern Qinghai-Tibetan Plateau

ISL OpenIR > 青海盐湖研究所知识仓储

	Last deglacial and Holocene lake level variations of Qinghai Lake, north-eastern Qinghai-Tibetan Plateau
	Liu, Xiang-Jun 1; Lai, Zhongping 2; Madsen, David 3; Zeng, Fangming 1
	2015-04-01
发表期刊	JOURNAL OF QUATERNARY SCIENCE
卷号	30 期号:3 页码:245-257
关键词	Lake Level Variation Last Deglacial And Holocene Optically Stimulated Luminescence Qinghai Lake Qinghai-tibetan Plateau
摘要	Qinghai Lake is of significance for paleoclimate research because it lies in a pivotal region that is influenced by both the mid-latitude Westerlies and the low-latitude Asian summer monsoon (ASM). Most published lake level histories of Qinghai Lake are interpreted from drill-core proxies. Here we combine geomorphic shoreline investigations with optically stimulated luminescence dating to constrain lake level variations since the last deglacial. The results indicate that two periods of highstands occurred during the last deglacial (approximate to 16-14.9 and approximate to 12.6-12.2 ka), and that lake levels were 6-7.4m higher than at present. Lake levels dropped abruptly during the Younger Dryas, and were generally low with frequent fluctuations during the early Holocene. Qinghai Lake reached its highest Holocene level, 9.1m higher than modern, at approximate to 5 ka, and has regressed during the past 2 ka. We propose that high lake levels during the last deglacial were due mainly to melting glacial and permafrost waters, supplemented by enhanced Westerlies precipitation and decreased evaporation during Heinrich Event 1 (approximate to 16-14.9 ka) and increased ASM rainfall during the BOlling-Allerod warm period (approximate to 14-12 ka). Lake level fluctuations during the Holocene were generally in accordance with moisture variations in the marginal monsoon zones of inland China.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5569
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 2.China Univ Geosci, Sch Earth Sci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 3.Lanzhou Univ, Res Sch Arid Environm & Climate Change, MOE Key Lab West Chinas Environm Syst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiang-Jun,Lai, Zhongping,Madsen, David,et al. Last deglacial and Holocene lake level variations of Qinghai Lake, north-eastern Qinghai-Tibetan Plateau[J]. JOURNAL OF QUATERNARY SCIENCE,2015,30(3):245-257.
APA	Liu, Xiang-Jun,Lai, Zhongping,Madsen, David,&Zeng, Fangming.(2015).Last deglacial and Holocene lake level variations of Qinghai Lake, north-eastern Qinghai-Tibetan Plateau.JOURNAL OF QUATERNARY SCIENCE,30(3),245-257.
MLA	Liu, Xiang-Jun,et al."Last deglacial and Holocene lake level variations of Qinghai Lake, north-eastern Qinghai-Tibetan Plateau".JOURNAL OF QUATERNARY SCIENCE 30.3(2015):245-257.