globalchange  > 气候变化与战略
DOI: 10.5194/tc-15-199-2021
Title:
Response of downstream lakes to Aru glacier collapses on the western Tibetan Plateau
Author: Lei Y.; Yao T.; Tian L.; Sheng Y.; Lazhu; Liao J.; Zhao H.; Yang W.; Yang K.; Berthier E.; Brun F.; Gao Y.; Zhu M.; Wu G.
Source Publication: Cryosphere
ISSN: 19940416
Publishing Year: 2021
Volume: 15, Issue:1
pages begin: 199
pages end: 214
Language: 英语
Keyword: avalanche ; bathymetric survey ; damage ; glacial lake ; glacier dynamics ; ice flow ; natural hazard ; numerical model ; satellite data ; topographic effect ; Aru Basin ; China ; Qinghai-Xizang Plateau ; Xizang
English Abstract: The lower parts of two glaciers in the Aru 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 classCombining double low lineinline-formula× 10 classCombining double low lineinline-formula6 m classCombining double low lineinline-formula3, 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., Aru 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 classCombining double low lineinline-formula× 10 classCombining double low lineinline-formula6 m classCombining double low lineinline-formula3 was discharged into Aru Co, spread over the lake surface and considerably lowered its surface temperature by 2-4 classCombining double low lineinline-formulag 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 Aru 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. © 2021 The Author(s). Published by Cambridge University Press.
Citation statistics:
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/164739
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


Affiliation: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; Cas Center for Excellence in Tibetan Plateau Earth System Sciences, Beijing, 100101, China; Institute of International Rivers and Eco-security, Yunnan University, Kunming, China; Department of Geography, University of California, Los Angeles (UCLA), Los Angeles, CA 90095-1524, United States; National Tibetan Plateau Data Center, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, 100094, China; Department of Earth System Science, Tsinghua University, Beijing, 10084, China; Legos, Cnes, Cnrs, Ird, Ups, Université de Toulouse, Toulouse, France; Université Grenoble Alpes, Cnrs, Ird, Grenoble Inp, Ige, Grenoble, 38000, France; Ngari Station for Desert Environment Observation and Research, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China

Recommended Citation:
Lei Y.,Yao T.,Tian L.,et al. Response of downstream lakes to Aru glacier collapses on the western Tibetan Plateau[J]. Cryosphere,2021-01-01,15(1)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Lei Y.]'s Articles
[Yao T.]'s Articles
[Tian L.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Lei Y.]'s Articles
[Yao T.]'s Articles
[Tian L.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Lei Y.]‘s Articles
[Yao T.]‘s Articles
[Tian L.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.