Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12544/2499
Glaciological problems set by control of dangerous lakes in Cordillera Blanca, Peru. I. Historical failures of Morainic dams, their causes and prevention
1977
Journal of Glaciology, vol.18, n° 79, 1977, pp. 239-254
The retreat of glaciers since 1927 in Cordillera Blanca has produced dangerous lakes on the front of many glaciers. All the known data, most of them unpublished, are reviewed. The known aluviones are listed, and those of Chavin, Quebrada Los Cedros and Artesoncocha described in full. In these three cases a breach in the front mo ra ine came from big ice falls into the lake. The protective d evices made on the outlets are described, as well as the effects of the big earthquake on 31 May 1970. In the case of Laguna Parón, which keeps its level thanks to infiltrations, the flu ctuations of the discharge of the springs as related to the level of the lake from 1955 to 1969 are reported. The projects for lowering the level of Laguna Parón and for emptying Safuna Alta are described. The latter partially emptied in fact by piping after the earthquake, allowing a final solution.
Cambridge University Press
Lliboutry, L.; Morales, B.; Pautre, A. & Schneider, B. (1977). Glaciological problems set by the control of dangerous lakes in Cordillera Blanca, Peru. I. Historical failures of morainic dams, their causes and prevention. Journal of Glaciology, 18(79): 239-254. https://doi.org/10.3189/S002214300002133X
10.3189/S002214300002133X

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