抄録
The sediment hazard probability and the road economic damage due to snowmelt are estimated from a risk evaluation model. As results, we made risk maps of sediment hazard probability and the road economic damage in Japan. These maps show spatial-temporal risk distribution of sediment hazard due to some snowmelt condition. The sediment hazard probability was obtained by a multiple logistic regression analysis based on conditions of past hazard, relief energy, hydraulic gradient, and geology. Hydraulic gradient was analyzed by infiltration analysis with consideration of snowmelt. Moreover, we verified weather situation about sediment hazard due to snowmelt.
