IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2013  > Vol10 No.2
The two main mechanisms of Glacier Lake Outburst Flood in Tibet, China
Liu Jing-jing1,2,3; Tang Chuan2; Cheng Zun-lan1
Corresponding AuthorCHENG Zun-lan
AbstractWith the global warming, the disasters of Glacier Lake Outburst Flood (GLOF) have taken place frequently in Tibet in recent years and attracted more and more attention. A systematic survey was conducted on the 19 GLOFs in Tibet to study their two main mechanisms. Investigations indicated that all the events occurred in end-moraine lakes, and the outburst occurred partially and instantly. And the breach had the shape of an arc or a trapezoid in overflow outburst and its top width was 3-5 times more than the height. The two main mechanisms of GLOFs in Tibetan end-moraine Lake were overflow and piping, and the overflow mechanism caused by iceberg collapse was dominated in most cases. A formula was proposed to calculate the critical thickness of iceberg tongue that determines the collapse. Granular analysis of the moraine materials revealed that seepage deformation is crucial in the outburst process. Finally, we conducted a case study of the Guangxiecuo Lake to show its possible process of outburst and estimated the peak discharge of the resulted flood.
KeywordGlacier Lake Outburst Flood End-moraine Lake Outburst Mechanism Overflow Piping Tibet
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS SubjectEnvironmental Sciences
WOS IDWOS:000317352800007
Funding OrganizationNational Natural Science Foundation of China(41201010) ; Ministry of Transport(201231879210) ; IMHE(SDS-135-1202-02) ; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(SKLGP 2010K003) ; State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research(IWHR-SKL-201209)
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Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
CollectionJournal of Mountain Science_Journal of Mountain Science-2013_Vol10 No.2
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.State Key Lab Geohazard Prevent, Chengdu 610059, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Liu Jing-jing,Tang Chuan,Cheng Zun-lan. The two main mechanisms of Glacier Lake Outburst Flood in Tibet, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2013,10(2):239-248.
APA Liu Jing-jing,Tang Chuan,&Cheng Zun-lan.(2013).The two main mechanisms of Glacier Lake Outburst Flood in Tibet, China.JOURNAL OF MOUNTAIN SCIENCE,10(2),239-248.
MLA Liu Jing-jing,et al."The two main mechanisms of Glacier Lake Outburst Flood in Tibet, China".JOURNAL OF MOUNTAIN SCIENCE 10.2(2013):239-248.
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