International Snow Science Workshop Proceedings - Montana State University Library

Item: Local Management of Avalanche Hazard on the Aosta Valley’s Roads and Identification of Event Scenarios

• • Title: Local Management of Avalanche Hazard on the Aosta Valley’s Roads and Identification of Event Scenarios

    Proceedings: Proceedings, 2012 International Snow Science Workshop, Anchorage, Alaska

    Authors:

    • Segor V.  [ Assetto idrogeologico dei bacini montani - Ufficio neve e valanghe, Regione autonoma Valle d’Aosta ]
    • Dellavedova P.  [ Assetto idrogeologico dei bacini montani - Ufficio neve e valanghe, Regione autonoma Valle d’Aosta ]  [ Fondazione “Montagna Sicura”, Regione autonoma Valle d’Aosta, Italy ]
    • Pitet L.  [ Assetto idrogeologico dei bacini montani - Ufficio neve e valanghe, Regione autonoma Valle d’Aosta ]
    • Sovilla B.  [ WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland ]

    Date: 2012

    Abstract: The Region of the Aosta Valley, situated in the far north-western part of Italy, borders to the north and west with Switzerland and France. 60% of its territory is at altitudes above 2000 m a.s.l.. In the regional cadaster 1926 avalanche sites were recorded from 1970 to 2011, affecting a total area covering slightly over 15% of the region. Over the years, the construction of several avalanche shelters have greatly reduced the hazard of avalanche events on roads and on vulnerable assets, however, they are not sufficient to totally control the danger avalanches pose to these infrastructures. To improve avalanche hazard management, the Region of the Aosta Valley, with the regional law n. 29/2010, approved the constitution of the Local Avalanche Committees (CLV). Starting from the regional avalanche bulletin, the CLV ensure the local management of this hazard, as is well demonstrated in the 2011-2012 winter season. Nevertheless, to help the CLV during the decision process new and more advanced tools are necessary. Ideal tools would allow them to associate a specific scenario of distribution and snowpack stability to a corresponding avalanche event scenario. In this work, we illustrate the essential features of the law, the practical application of the work of a CLV, and the actions in the 'Italy-Switzerland 2007-2013 - Project "STRADA" who try to provide concrete tools for the evaluation of event scenarios at slope scale for frequent avalanche events.

    Language of Article: English

    Presenters: unknown

    Keywords: roads, avalanche hazard management, event scenarios

    Page Number(s): 541-546

    Subjects: risk reduction avalanche awareness

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