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Integrated hazard assessment of Cirenmaco glacial lake in Zhangzangbo valley, Central Himalayas
Wang, WC (Wang, Weicai)1; Gao, Y (Gao, Yang)1,2; Anacona, PI (Anacona, Pablo Iribarren)3; Lei, YB (Lei, Yanbin)1,2; Xiang, Y (Xiang, Yang)1; Zhang, GQ (Zhang, Guoqing)1,2; Li, SH (Li, Shenghai)1; Lu, AX (Lu, Anxin)4
Source PublicationGEOMORPHOLOGY
2018-04-01
Volume306Issue:0Pages:292-305
DOI10.1016/j.geomorph.2015.08.013
Abstract

Glacial lake outburst floods (GLOFs) have recently become one of the primary natural hazards in the Himalayas. There is therefore an urgent need to assess GLOF hazards in the region. Cirenmaco, a moraine-dammed lake located in the upstream portion of Zhangzangbo valley, Central Himalayas, has received public attention after its damaging 1981 outburst flood. Here, by combining remote sensing methods, bathymetric survey and 2D hydraulic modeling, we assessed the hazard posed by Cirenmaco in its current status. Inter-annual variation of Cirenmaco lake area indicates a rapid lake expansion from 0.10 +/- 0.08 km(2) in 1988 to 039 +/- 0.04 km(2) in 2013. Bathymetric survey shows the maximum water depth of the lake in 2012 was 115 +/- 2 m and the lake volume was calculated to be 1.8 x 10(7) m(3). Field geomorphic analysis shows that Cirenmaco glacial lake is prone to GLOFs as mass movements and ice and snow avalanches can impact the lake and the melting of the dead ice in the moraine can lower the dam level. HEC-RAS 2D model was then used to simulate moraine dam failure of the Cirenmaco and assess GLOF impacts downstream. Reconstruction of Cirenmaco 1981 GLOF shows that HEC-RAS can produce reasonable flood extent and water depth, thus demonstrate its ability to effectively model complex GLOFs. GLOF modeling results presented can be used as a basis for the implementation of disaster prevention and mitigation measures. As a case study, this work shows how we can integrate different methods to GLOF hazard assessment (C) 2015 Elsevier B.V. All rights reserved.

Subject Area地理学
WOS IDWOS:000427344100023
Language英语
Indexed BySCIE
KeywordMoraine-dammed Lakes Mount Everest Region Debris-covered Glaciers Koshi River-basin Outburst Floods Catastrophic Drainage Cordillera Blanca Risk-assessment Imja Tsho Reconstruction
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
Cooperation Status国际
ISSN0169-555X
Department环境变化与地表过程重点实验室
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8695
Collection图书馆
Corresponding AuthorWang, WC (Wang, Weicai); Gao, Y (Gao, Yang)
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
3.Victoria Univ Wellington, Sch Geog Environm & Earth Sci, Wellington, New Zealand;
4.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Wang, WC ,Gao, Y ,Anacona, PI ,et al. Integrated hazard assessment of Cirenmaco glacial lake in Zhangzangbo valley, Central Himalayas[J]. GEOMORPHOLOGY,2018,306(0):292-305.
APA Wang, WC .,Gao, Y .,Anacona, PI .,Lei, YB .,Xiang, Y .,...&Lu, AX .(2018).Integrated hazard assessment of Cirenmaco glacial lake in Zhangzangbo valley, Central Himalayas.GEOMORPHOLOGY,306(0),292-305.
MLA Wang, WC ,et al."Integrated hazard assessment of Cirenmaco glacial lake in Zhangzangbo valley, Central Himalayas".GEOMORPHOLOGY 306.0(2018):292-305.
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