The parameters of this distribution are estimated based on a simple classification of rock structures and on field inventories. The RFM assumes that the magnitude-frequency relationships of rockfall events and blocks follow a power law. In this paper, we present a straightforward rockfall frequency model (RFM: Rockfall Frequency Model) and its application at 8 different sites at 7 locations in the Swiss Alps.
The estimation of rockfall and block volumes for different return periods thereby remains a major challenge. A realistic quantification of rockfall risk is thus crucial for an effective prevention of damages and loss of lives. Rockfall causes a large number of accidents and fatalities in steep environments.
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