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Avalanche risk analysis using airborne LiDAR data

2022; National Institute for Aerospace Research “Elie Carafoli” - INCAS; Volume: 14; Issue: 1 Linguagem: Inglês

10.13111/2066-8201.2022.14.1.3

2247-4528

Georgiana GRIGORAȘ, Ioana Vizireanu, Bogdan Urițescu, Andreea CALCAN,

Fire effects on ecosystems

Natural and man-made disasters are a justified concern causing life-threats damages, affects existing budgets or disrupts national economic and social development plans. In this paper, a digital terrain model (DTM) and a geographic information system (GIS) are used to identify areas with a high risk of avalanches in the Râmeț mountain area of Alba County. Avalanches are the result of a complex interaction between terrain, weather conditions and snow cover characteristics. The most important factor among those listed is the terrain, being the only constant parameter over time. Therefore, the present study focused in particular on the determination of topographic parameters and the realization of a digital terrain model with a resolution of 0.5 m, which allows the small-scale identification of slope angle variations, which are of great interest for avalanche study. This digital terrain model was generated after processing LiDAR data obtained from a scanning campaign for the analyzed area with the Riegl LMS Q680i LiDAR system, located aboard the Hawker Beechcraft King Air C90 GTx aircraft from INCAS. The result of the analysis consisted in mapping the risk of avalanches in the Râmeț mountain area in Alba County.