Abstract
This study presents a new method which can visually evaluate the spatial distribution of snow avalanche risk against a human body. An empirical formula of the impact force and 3D stabilized FE analysis based on SUPG/PSPG method are efficiently combined to estimate the snow avalanche risk under the low calculation cost. In the 3D FE analysis, flow characteristic of snow is modeled by a Bingham-type fluid model in which the shear strength can be controlled with the internal friction angle and the cohesion. The impact force of snow avalanche against human body is then estimated at every points on the slope surface with the help of calculated flow properties and the empirical formula, and high-risk area is visually defined in the hazard map.
