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Potential hazardousness of selected moraine-dammed lakes in the Cordillera Blanca, Peru
Emmer, Adam ; Vilímek, Vít (advisor) ; Klimeš, Jan (referee)
Adam Emmer: Potential hazardousness of selected moraine-dammed lakes in the Cordillera Blanca, Peru ABSTRACT: This work is devided into the two parts. Firs part reviews contemporary methods of assessment of potential hazardousness for moraine-dammed lakes (eight qualitative methods and three quantitative methods). Second part has two main aims: 1) Assessment of potential hazardousness of seven selected moraine-dammed lakes in the Cordillera Blanca, and 2) Analysis of suitability of these methods for use in this region. Required input data for potential hazardousness assessment were gained from analysis of remotely sensed photographs, research papers of INRENA/ANA institute (Huaráz), and from fieldwork realized in 2012. Ten methods of potential hazardousness assessment were applied on seven studied moraine-dammed lakes. There are no significant differences in results obtained in each method. These results showed, that potentially most hazardous lake is that of Arhueycocha, followed by Palcacocha. On the other hand potentially less hazardous lake is that of Rajucolta. Based on analysis of regional specific of causes and mechanisms of glacial lake outburst floods from moraine-dammed lakes in Cordillera Blanca, five groups of characteristics which reflect these regional specifics were merged: A) possibility of...
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The analysis of moraine-dammed lake destructions
Emmer, Adam ; Vilímek, Vít (advisor) ; Klimeš, Jan (referee)
Analysis of moraine-dammed lake destructions ABSTRACT: Floods from moraine-dammed lakes represent significant threat for inhabitants of high-mountain areas all over the world. There are eight main causes of lake destructions and about twenty consequent failure mechanisms. Based on research of scientific literature, this thesis aims at creating an analysis of the above mentioned causes. Contemporary methods of potentionally dangerous lakes recognizing, approaches to hazard assessment and flash flood prevention and mitigation meassures are mentioned as well. In the analytical part, differences / similarities of the particular causes are studied as well as the chronological aspect of these events in the Northamerican Cordillera, Central Asia and Cordillera Blanca. Keywords: moraine-dammed lakes; GLOF; high mountain areas
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