DOI: 10.1016/j.gloplacha.2012.05.025
论文题名: Index for hazard of glacier lake outburst flood of lake merzbacher by satellite-based monitoring of lake area and ice cover
作者: Xie Z. ; ShangGuan D. ; Zhang S. ; Ding Y. ; Liu S.
刊名: Global and Planetary Change
ISSN: 0921-8263
出版年: 2013
卷: 107 起始页码: 229
结束页码: 237
语种: 英语
英文关键词: Area extraction
; Early-warning
; Floating ice
; Index for Glacier Lake Outburst
; Lake Merzbacher
; Remote sensing
Scopus关键词: Continuous observation
; Disaster monitoring
; Early warning
; Floating ice
; Glacier lake outbursts
; Glacier-lake outburst flood
; Moraine-dammed lake
; Outburst prediction
; Bridge piers
; Floods
; Forecasting
; Hazards
; Ice
; Image processing
; Remote sensing
; Lakes
; dam
; drainage
; flood
; forecasting method
; glacial environment
; ice cover
; melting
; monitoring
; prediction
; remote sensing
; satellite imagery
; Kyrgyzstan
; Merzbacher Lake
; Ysyk-Kol
英文摘要: Previous studies show that the area of a moraine-dammed lake can provide a good indicator of the significance of its outburst. For a glacier-dammed lake however, because its area and depth fluctuates with the melting of its ice dam, it is difficult to predict the outburst of the glacier-dammed lake by using its area alone.A characteristic of the surface of Lake Merzbacher is a large amount of floating ice therefore, a method is proposed in this article to extract the area of floating ice on the lake and the area of ice free water in the lake by using Environment and Disaster Monitoring Small Satellite images respectively. Furthermore, based on the area of floating ice extracted through the image information of Lake Merzbacher in 2009 and 2010, we determined the relationship between the ice area and the outburst of the lake, then formulated the Index for hazard of Glacier Lake Outburst Flood (IGLOF) of Lake Merzbacher, which cannot only predict the flood outburst, but also determine the specific outburst period after the lake drainage had occurred. This can be shown in a recalculation of the lake drainages in the years 2009 and 2010. Research results indicate that when IGLOF is less than 0.5 and the lake area is larger than 3km2, the outburst process is in early-warning period and GLOF will occur in the next 5-8days. Also, the successful outburst prediction of Lake Merzbacher in 2011 showed that the index described in this paper provides a quick methodology for forecasting and warning against Lake Merzbacher outburst floods. However,as our research was based on a short observation period (2009-2011) and also cannot be supplemented by other images, it will still be needed to be checked and validated by continuous observation and improvement in future. © 2012 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880332702&doi=10.1016%2fj.gloplacha.2012.05.025&partnerID=40&md5=b0027949e7f252425488a5a5e17e7ac4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11169
Appears in Collections: 全球变化的国际研究计划
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作者单位: State Key Laboratory of Cryospheric Science, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Gansu 730000, China
Recommended Citation:
Xie Z.,ShangGuan D.,Zhang S.,et al. Index for hazard of glacier lake outburst flood of lake merzbacher by satellite-based monitoring of lake area and ice cover[J]. Global and Planetary Change,2013-01-01,107.