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DOI	10.5194/tc-15-199-2021
	Response of downstream lakes to Aru glacier collapses on the western Tibetan Plateau
	Lei, Yanbin; Yao, Tandong; Tian, Lide; Sheng, Yongwei; Liao, Jingjuan; Zhao, Huabiao; Yang, Wei; Yang, Kun; Berthier, Etienne; Brun, Fanny; Gao, Yang; Zhu, Meilin; Wu, Guangjian
通讯作者	Lei, YB (通讯作者)
发表日期	2021
ISSN	1994-0416
EISSN	1994-0424
起始页码	199
结束页码	214
卷号	15 期号:1
英文摘要	The lower parts of two glaciers in the Am range on the western Tibetan Plateau (TP) collapsed on 17 July and 21 September 2016, respectively, causing fatal damage to local people and their livestock. The giant ice avalanches, with a total volume of 150 x 10(6) m(3), had almost melted by September 2019 (about 30 % of the second ice avalanche remained). The impact of these extreme disasters on downstream lakes has not been investigated yet. Based on in situ observation, bathymetry survey and satellite data, we explore the impact of the ice avalanches on the two downstream lakes (i.e., Am Co and Memar Co) in terms of lake morphology, water level and water temperature in the subsequent 4 years (2016-2019). After the first glacier collapse, the ice avalanche slid into Aru Co along with a large amount of debris, which generated great impact waves in Aru Co and significantly modified the lake's shoreline and underwater topography. An ice volume of at least 7.1 x 10(6) m(3 )was discharged into Aru Co, spread over the lake surface and considerably lowered its surface temperature by 2-4 degrees C in the first 2 weeks after the first glacier collapse. Due to the large amount of meltwater input, Memar Co exhibited more rapid expansion after the glacier collapses (2016-2019) than before (2003-2014), in particular during the warm season. The melting of ice avalanches was found to contribute to about 23 % of the increase in lake storage between 2016 and 2019. Our results indicate that the Am glacier collapses had both short-term and long-term impacts on the downstream lakes and provide a baseline in understanding the future lake response to glacier melting on the TP under a warming climate.
关键词	DIGITAL ELEVATION MODELS HIGH-MOUNTAIN ASIA MASS BALANCES WATER-LEVEL DYNAMICS OUTBURST STORAGE CO KUNLUN REGION
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000611038600001
来源期刊	CRYOSPHERE
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/260536
推荐引用方式 GB/T 7714	Lei, Yanbin,Yao, Tandong,Tian, Lide,et al. Response of downstream lakes to Aru glacier collapses on the western Tibetan Plateau[J]. 中国科学院青藏高原研究所,2021,15(1).
APA	Lei, Yanbin.,Yao, Tandong.,Tian, Lide.,Sheng, Yongwei.,Liao, Jingjuan.,...&Wu, Guangjian.(2021).Response of downstream lakes to Aru glacier collapses on the western Tibetan Plateau.CRYOSPHERE,15(1).
MLA	Lei, Yanbin,et al."Response of downstream lakes to Aru glacier collapses on the western Tibetan Plateau".CRYOSPHERE 15.1(2021).