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Abstract:

The Laguna Derrumbe is a body of water located in the North Patagonian Andes, in Chubut province, Argentina. This lake is contained in a glacial cirque and dammed by the terminal moraine of the namesake glacier. Through field survey it was possible to describe this lake and an important rocky deposit downstream of it, which is interpreted as an outburst flood deposit. These deposits are generated by high-energy processes related to the failure of a natural dam, in this case a moraine dam. The study made allowed to conclude that the frontal moraine of the Derrumbe glacier suffered a partial rupture in historic times, unleashing a flash flood downstream to the lake, through the Tigre river valley in the town of Cholila. In this work the possible causes that led to the failure are discussed, concluding that the main cause was probably the fast retreat that the glacier experimented in the 50's and early 60's, similarly to the general glacier retreat observed in the Patagonian Andes during the last century.

Registro:

Documento: Artículo
Título:The historic outburst flood of the laguna Derrumbe, Cholila, Chubut. Fast glacier retreat and moraine dam failure in North Patagonian Cordillera
Autor:Colavitto, B.; Orts, D.L.; Folguera, A.
Filiación:Departamento de Cs. Geológicas, Universidad de Buenos Aires, Argentina
Instituto de Estudios Andinos, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
Palabras clave:Climate change; Earthquake; Mass wasting; Patagonian Andes; climate change; dam failure; flood; glacier retreat; moraine; outburst; Andes; Argentina; Chubut; Patagonia
Año:2012
Volumen:69
Número:3
Página de inicio:457
Página de fin:465
Título revista:Revista de la Asociacion Geologica Argentina
Título revista abreviado:Rev. Asoc. Geol. Argent.
ISSN:00044822
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v69_n3_p457_Colavitto

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Citas:

---------- APA ----------
Colavitto, B., Orts, D.L. & Folguera, A. (2012) . The historic outburst flood of the laguna Derrumbe, Cholila, Chubut. Fast glacier retreat and moraine dam failure in North Patagonian Cordillera . Revista de la Asociacion Geologica Argentina, 69(3), 457-465.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v69_n3_p457_Colavitto [ ]
---------- CHICAGO ----------
Colavitto, B., Orts, D.L., Folguera, A. "The historic outburst flood of the laguna Derrumbe, Cholila, Chubut. Fast glacier retreat and moraine dam failure in North Patagonian Cordillera " . Revista de la Asociacion Geologica Argentina 69, no. 3 (2012) : 457-465.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v69_n3_p457_Colavitto [ ]
---------- MLA ----------
Colavitto, B., Orts, D.L., Folguera, A. "The historic outburst flood of the laguna Derrumbe, Cholila, Chubut. Fast glacier retreat and moraine dam failure in North Patagonian Cordillera " . Revista de la Asociacion Geologica Argentina, vol. 69, no. 3, 2012, pp. 457-465.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v69_n3_p457_Colavitto [ ]
---------- VANCOUVER ----------
Colavitto, B., Orts, D.L., Folguera, A. The historic outburst flood of the laguna Derrumbe, Cholila, Chubut. Fast glacier retreat and moraine dam failure in North Patagonian Cordillera . Rev. Asoc. Geol. Argent. 2012;69(3):457-465.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v69_n3_p457_Colavitto [ ]