DOI: 10.5194/tc-10-2399-2016
Scopus记录号: 2-s2.0-84992731386
论文题名: Glacier change and glacial lake outburst flood risk in the Bolivian Andes
作者: Cook S ; J ; , Kougkoulos I ; , Edwards L ; A ; , Dortch J ; , Hoffmann D
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期: 5 起始页码: 2399
结束页码: 2413
语种: 英语
英文关键词: flood forecasting
; glacial lake
; glacier dynamics
; hazard assessment
; lake evolution
; outburst
; satellite imagery
; Andes
; Bolivia
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). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75061
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: School of Science and the Environment, Manchester Metropolitan University, Chester Street, Manchester, United Kingdom; Cryosphere Research at Manchester (CRAM), Oxford Road, Manchester, United Kingdom; Department of Geography, University of Manchester, Oxford Road, Manchester, United Kingdom; Bolivian Mountain Institute, Casilla 3, La Paz, Bolivia
Recommended Citation:
Cook S,J,, Kougkoulos I,et al. Glacier change and glacial lake outburst flood risk in the Bolivian Andes[J]. Cryosphere,2016-01-01,10(5)