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Glacial lake evolution in the southeastern Tibetan Plateau and the cause of rapid expansion of proglacial lakes linked to glacial-hydrogeomorphic processes
Song, Chunqiao1; Sheng, Yongwei1; Ke, Linghong2; Nie, Yong3; Wang, Jida4
Corresponding AuthorSong, Chunqiao ; Sheng, Yongwei
2016
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
EISSN1879-2707
Volume540Pages:504-514
SubtypeArticle
AbstractGlacial lakes, as an important component of the cryosphere in the southeastern Tibetan Plateau (SETP) in response to climate change, pose significant threats to the downstream lives and properties of people, engineering construction, and ecological environment via outburst floods, yet we currently have limited knowledge of their distribution, evolution, and the driving mechanism of rapid expansions due to the low accessibility and harsh natural conditions. By integrating optical imagery, satellite altimetry and digital elevation model (DEM), this study presents a regional-scale investigation of glacial lake dynamics across two river basins of the SETP during 1988-2013 and further explores the glacial-hydrogeomorphic process of rapidly expanding lakes. In total 1278 and 1396 glacial lakes were inventoried in 1988 and 2013, respectively. Approximately 92.4% of the lakes in 2013 are not in contact with modern glaciers, and the remaining 7.6% includes 27 (1.9%) debris-contact lakes (in contact with debris-covered ice) and 80 (5.7%) cirque lakes. In categorizing lake variations, we found that debris-contact proglacial lakes experienced much more rapid expansions (similar to 75%) than cirque lakes (similar to 7%) and non-glacier-contact lakes (similar to 3%). To explore the cause of rapid expansion for these debris-contact lakes, we further investigated the mass balance of parent glaciers and elevation changes in lake surfaces and debris-covered glacier tongues using time-series Landsat images, ICESat altimetry, and DEM. Results reveal that the upstream expansion of debris-contact proglacial lakes was not directly associated with rising water levels but with a geomorphological alternation of upstream lake basins caused by melting-induced debris subsidence at glacier termini. This suggests that the hydrogeomorphic process of glacier thinning and retreat, in comparison with direct glacial meltwater alone, may have played a dominant role in the recent glacial lake expansion observed across the SETP. Our findings assist in understanding the expansion mechanism of debris contact proglacial lakes, which facilitates early recognition of potential glacial lake hazards in this region. (C) 2016 Elsevier B.V. All rights reserved.
KeywordGlacial Lake Tibetan Plateau Landsat Icesat Mountain Glacier Climate Change
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1016/j.jhydrol.2016.06.054
WOS Subject ExtendedEngineering ; Geology ; Water Resources
Indexed BySCI
WOS KeywordMULTIMISSION SATELLITE DATA ; BOSHULA MOUNTAIN-RANGE ; MT. QOMOLANGMA ; LEVEL CHANGES ; WATER-LEVEL ; INVENTORY ; HIMALAYAS ; ICESAT ; REGION ; HAZARDS
Language英语
Quartile2区
TOP
WOS SubjectEngineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000382269500039
Funding OrganizationUnited States Geological Surveying (USGS) Landsat Science Team Program Grant(G12PC00071)
Citation statistics
Cited Times:38[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17675
Collection数字山地与遥感应用中心
Affiliation1.Univ Calif Los Angeles, Dept Geog, Los Angeles, CA 90095 USA
2.Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hong Kong, Hong Kong, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China
4.Kansas State Univ, Dept Geog, Manhattan, KS 66506 USA
Recommended Citation
GB/T 7714
Song, Chunqiao,Sheng, Yongwei,Ke, Linghong,et al. Glacial lake evolution in the southeastern Tibetan Plateau and the cause of rapid expansion of proglacial lakes linked to glacial-hydrogeomorphic processes[J]. JOURNAL OF HYDROLOGY,2016,540:504-514.
APA Song, Chunqiao,Sheng, Yongwei,Ke, Linghong,Nie, Yong,&Wang, Jida.(2016).Glacial lake evolution in the southeastern Tibetan Plateau and the cause of rapid expansion of proglacial lakes linked to glacial-hydrogeomorphic processes.JOURNAL OF HYDROLOGY,540,504-514.
MLA Song, Chunqiao,et al."Glacial lake evolution in the southeastern Tibetan Plateau and the cause of rapid expansion of proglacial lakes linked to glacial-hydrogeomorphic processes".JOURNAL OF HYDROLOGY 540(2016):504-514.
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