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Item: Analysis of two avalanche zones in the Southern Pyrenees (Andorra and Catalonia) using historical analysis, snow-climate data and mixed flowing/powder avalanche modelling.

    • Title: Analysis of two avalanche zones in the Southern Pyrenees (Andorra and Catalonia) using historical analysis, snow-climate data and mixed flowing/powder avalanche modelling.

      Proceedings: International Snow Science Workshop Proceedings 2018, Innsbruck, Austria

      Authors:

      • Sergi Riba Porras  [ PhD Student Civil Engineering- ETSECCPB, Barcelona, Catalonia ]  [ Nivorisk SL, Private Engineering Company, Andorra. ]
      • Carles García-Sellés  [ Nivorisk SL, Private Engineering Company, Andorra. ]  [ ICGC- Cartographic and Geological Institute of Catalonia, Barcelona, Catalonia. ]
      • Perry Bartelt  [ WSL Institute for Snow and Avalanche Research, SLF, Davos Dorf. ]
      • Lukas Stoffel  [ WSL Institute for Snow and Avalanche Research, SLF, Davos Dorf. ]

      Date: 2018-10-07

      Abstract: Over the last 30 years, Andorra and northern Catalonia (Pyrenean regions) have frequently been affected by avalanche events having as result more than 11 deaths in Andorra and 40 deaths in Catalonia. Some of these events affected buildings and infrastructure producing multi-million Euros losses. As a consequence, the governments of Andorra and Catalonia have increased their efforts to mitigate the danger and risks associated with avalanche hazard, particularly in urban and ski resort areas; for this reason it is important to have a realistic hazard maps, obtained with an engineering methodology based on historical data, snow-climate analysis and avalanche dynamics simulations. The simulations account for different flow regimes induced by the snow and weather analysis (snow height, snow temperature, spatial distribution and moisture content). The application of thermomechanical avalanche dynamics models consequently underscores the importance of gathering historical data including precipitation records, snow cover data avalanche flow behaviour, including the predominant avalanche flow regime.

      Object ID: ISSW2018_P06.8.pdf

      Language of Article: English

      Presenter(s):

      Keywords: Avalanche dynamics, avalanche modelling, snow climate, Eastern Pyrenees

      Page Number(s): 561-565

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