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HESS | Articles | Volume 24, issue 1
Hydrol. Earth Syst. Sci., 24, 93–114, 2020
https://doi.org/10.5194/hess-24-93-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Hydrol. Earth Syst. Sci., 24, 93–114, 2020
https://doi.org/10.5194/hess-24-93-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 09 Jan 2020

Research article | 09 Jan 2020

Reconstruction of the 1941 GLOF process chain at Lake Palcacocha (Cordillera Blanca, Peru)

Martin Mergili et al.

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Cited articles

ANA: Inventario Nacional de Glaciares y Lagunas – Lagunas, Ministerio de Agricultura y Riesgo, Autoridad Nacional del Agua, Unidad de Glaciología y Recursos Hídricos, Huaráz, Peru, 2014. 
ANA: Plano batimétrico de la Laguna Palcacocha. Perfil longitudinal y transversal, Ministerio de Agricultura y Riesgo, Autoridad Nacional del Agua, Unidad de Glaciología y Recursos Hídricos, Huaráz, Peru, 2016. 
Andres, C. N., Eyles, C. H., Jara, H., and Narro-Pérez, R.: Sedimentological analysis of Paleolake Jircacocha, Cojup Valley, Cordillera Blanca, Peru, Revista de Glaciares y Ecosystemas de Montaña, 5, 9–26, 2018. 
Beven, K.: Equifinality and Uncertainty in Geomorphological Modelling, in: The Scientific Nature of Geomorphology: Proceedings of the 27th Binghamton Symposium in Geomorphology, 27–29 September 1996, John Wiley & Sons, Chichester, 289–313, 1996. 
Beven, K. and Freer, J.: Equifinality, data assimilation, and uncertainty estimation in mechanistic modelling of complex environmental systems using the GLUE methodology, J. Hydrol., 249, 11–29, https://doi.org/10.1016/S0022-1694(01)00421-8, 2001. 
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Short summary
In 1941, the glacial lagoon Lake Palcacocha in the Cordillera Blanca (Peru) drained suddenly. The resulting outburst flood/debris flow consumed another lake and had a disastrous impact on the town of Huaraz 23 km downstream. We reconstuct this event through a numerical model to learn about the possibility of prediction of similar processes in the future. Remaining challenges consist of the complex process interactions and the lack of experience due to the rare occurrence of such process chains.
In 1941, the glacial lagoon Lake Palcacocha in the Cordillera Blanca (Peru) drained suddenly....
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