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DOI	10.1016/j.quascirev.2022.107528
	Mega-lakes in the northwestern Tibetan Plateau formed by melting glaciers during the last deglacial
	Zhang, Shuai; Zhao, Hui; Sheng, Yongwei; Zhang, Jifeng; Zhang, Junjie; Sun, Aijun; Wang, Leibin; Huang, Lingxin; Hou, Juzhi; Chen, Fahu
通讯作者	Chen, FH (通讯作者)
发表日期	2022
ISSN	0277-3791
EISSN	1873-457X
卷号	285
英文摘要	Rapid lake expansions along with intensive glacier loss in the Tibetan Plateau (TP) in recent decades indicate an enhanced hydrological circulation. Well-preserved paleo-shorelines up to similar to 200 m above modern levels in the TP attest to much greater lake expansions in the past and serve as analogues for future lake evolution under climate changes. Mega-lakes in the inner TP, defined by the highest paleoshorelines, were mainly formed in the early-middle Holocene and are mainly attributed to a high monsoonal rainfall. However, the effect of melting glaciers on the mega-lakes was rarely evaluated, and reliable mega-lake ages are scarce, especially in the northwestern TP (NWTP). We studied six mega-lakes in the NWTP by dating the highest paleo-shorelines using optical dating of multiple and single grains and then reconstructing the paleo-hydrology. The results show that four mega-lakes existed during the last deglacial (16.3-12.6 ka). They had lake levels 53-269 m higher than today and areas up to 7.3 times larger than the modern lakes, containing up to 105.4 km(3) more water. A comparison of mega-lakes across the TP and correlation with independent paleoclimatic records reveal that these mega-lakes attained larger relative sizes (lake area/basin land area ratio) under a dry climate and intensive glacier melting during the last deglacial than the non-glacier-fed mega-lakes that developed in response to the early -middle Holocene rainfall maximum. We suggest that they were formed by melting glaciers, and therefore glaciers had major impacts on long-term lake evolution in the NWTP. (C) 2022 Elsevier Ltd. All rights reserved.
关键词	BASIN WESTERN TIBET HOLOCENE ENVIRONMENTAL-CHANGES ARID CENTRAL-ASIA SUMXI CO BASIN CLIMATE-CHANGE QAIDAM BASIN INDIAN MONSOON LEVEL CHANGES QINGHAI LAKE IRSL SIGNALS
英文关键词	Mega-lake; Paleo-shoreline; Optical dating; Last deglacial; Glacial meltwater; Northwestern Tibetan plateau
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000803072100006
来源期刊	QUATERNARY SCIENCE REVIEWS
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/260742
推荐引用方式 GB/T 7714	Zhang, Shuai,Zhao, Hui,Sheng, Yongwei,et al. Mega-lakes in the northwestern Tibetan Plateau formed by melting glaciers during the last deglacial[J]. 中国科学院青藏高原研究所,2022,285.
APA	Zhang, Shuai.,Zhao, Hui.,Sheng, Yongwei.,Zhang, Jifeng.,Zhang, Junjie.,...&Chen, Fahu.(2022).Mega-lakes in the northwestern Tibetan Plateau formed by melting glaciers during the last deglacial.QUATERNARY SCIENCE REVIEWS,285.
MLA	Zhang, Shuai,et al."Mega-lakes in the northwestern Tibetan Plateau formed by melting glaciers during the last deglacial".QUATERNARY SCIENCE REVIEWS 285(2022).