LANDSLIDE AND GLACIAL LAKE OUTBURST FLOOD HAZARD IN THE CHUCCHÚN RIVER BASIN, CORDILLERA BLANCA, PERU

  • Jan Klimeš Academy of Sciences, p.r.i., Prague, Institute of Rock Structure and Mechanics, Department of Engineering geology, Czech Republic
  • Vít Vilímek Charles University in Prague, Faculty of Science, Department of Physical Geography and Geoecology, Czech Republic
  • Miroslava Benešová T. G. Masaryk Water Research Institute, p.r.i., Department of Hydraulics, Czech Republic
Keywords: landslide hazard, GLOFs, flood hazard, Cordillera Blanca, Peru

Abstract

The Chucchún River basin was hit by glacial lake outburst flood (GLOF) triggered by ice/rock avalanche which caused spill over from the Lake 513 (April 11, 2010). The whole region is also highly susceptible for landslide occurrences, therefore the GLOF and landslide multi-hazard map were prepared for the watershed. Definition of the GLOF hazard zones was done using 1D mathematical model HEC-RAS for modeling of flooded areas. Landslide hazard zonation was based on landslide inventory mapping and historical records of the landslide occurrences. Resulting multi-hazard map shows that 26% of the studied river basin is under some degree of hazard from landslides or GLOFs. It clearly shows the most endangered inhabited areas as well as places, where floods and landslides may adversely affect each other increasing intensity of the hazardous event.

Published
2015-11-01
How to Cite
Klimeš, J., Vilímek, V., & Benešová, M. (2015). LANDSLIDE AND GLACIAL LAKE OUTBURST FLOOD HAZARD IN THE CHUCCHÚN RIVER BASIN, CORDILLERA BLANCA, PERU. AUC Geographica, 50(2), 173-180. https://doi.org/10.14712/23361980.2015.96
Section
Original Articles