气候变化领域集成服务门户(CCPortal): Glacier change and glacial lake outburst flood risk in the Bolivian Andes

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DOI	10.5194/tc-10-2399-2016
	Glacier change and glacial lake outburst flood risk in the Bolivian Andes
	Cook S.J.; Kougkoulos I.; Edwards L.A.; Dortch J.; Hoffmann D.
发表日期	2016
ISSN	19940416
卷号	10 期号:5
英文摘要	Glaciers of the Bolivian Andes represent an important water resource for Andean cities and mountain communities, yet relatively little work has assessed changes in their extent over recent decades. In many mountain regions, glacier recession has been accompanied by the development of proglacial lakes, which can pose a glacial lake outburst flood (GLOF) hazard. However, no studies have assessed the development of such lakes in Bolivia despite recent GLOF incidents here. Our mapping from satellite imagery reveals an overall areal shrinkage of 228.1±22.8 km2 (43.1 %) across the Bolivian Cordillera Oriental between 1986 and 2014. Shrinkage was greatest in the Tres Cruces region (47.3 %), followed by the Cordillera Apolobamba (43.1 %) and Cordillera Real (41.9 %). A growing number of proglacial lakes have developed as glaciers have receded, in accordance with trends in most other deglaciating mountain ranges, although the number of ice-contact lakes has decreased. The reasons for this are unclear, but the pattern of lake change has varied significantly throughout the study period, suggesting that monitoring of future lake development is required as ice continues to recede. Ultimately, we use our 2014 database of proglacial lakes to assess GLOF risk across the Bolivian Andes. We identify 25 lakes that pose a potential GLOF threat to downstream communities and infrastructure. We suggest that further studies of potential GLOF impacts are urgently required. © 2016 Author(s).
学科领域	flood forecasting; glacial lake; glacier dynamics; hazard assessment; lake evolution; outburst; satellite imagery; Andes; Bolivia
语种	英语
scopus关键词	flood forecasting; glacial lake; glacier dynamics; hazard assessment; lake evolution; outburst; satellite imagery; Andes; Bolivia
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119565
作者单位	School of Science and the Environment, Manchester Metropolitan University, Chester Street, Manchester, M1 5GD, United Kingdom; Cryosphere Research at Manchester (CRAM), Oxford Road, Manchester, United Kingdom; Department of Geography, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom; Bolivian Mountain Institute, Casilla 3, La Paz, 12417, Bolivia
推荐引用方式 GB/T 7714	Cook S.J.,Kougkoulos I.,Edwards L.A.,et al. Glacier change and glacial lake outburst flood risk in the Bolivian Andes[J],2016,10(5).
APA	Cook S.J.,Kougkoulos I.,Edwards L.A.,Dortch J.,&Hoffmann D..(2016).Glacier change and glacial lake outburst flood risk in the Bolivian Andes.Cryosphere,10(5).
MLA	Cook S.J.,et al."Glacier change and glacial lake outburst flood risk in the Bolivian Andes".Cryosphere 10.5(2016).