Deterministic modeling of landslide and rockfall risk

Abstract

The article presents two deterministic methods for the elaboration of landslide and rockfall source area maps and, considering human activity in the landscape, for the elaboration of landslide and rockfall risk maps. Risk maps are one of the fundamental bases for protection against natural disasters since they illustrate the risks to areas of human activity due to various natural processes. Using the weighting method a nd for the first time the matrix method, we established the extent of landslide and rockfall source areas in the Upper Savinja Valley and the risk due to these processes relative to settlement, roads, land use, and rivers and streams. The methodology fo r elaborating maps using both approaches is described in detail as well as the differences between them. The basic purpose of risk maps is to direct human encroachment in the landscape to safe areas.