The characterization of landslide size distributions

摘要: Landslide size distributions generally exhibit power-law scaling over a limited scale range. The range is set by the mapping resolution, number of observed events, and slope failure process itself. This property self-similarity an important insight into physics hillslope failure. Typically, however, large proportion landslide data does not fit simple power law. These are always ignored in order to characterize scaling. We show that sets from New Zealand Taiwan two regimes, separated crossover purely artefact resolution. Below this undersampled. propose general model for distribution landslides which can account whole population mapped failures. quantifies undersampling smaller provides improved estimation larger landslides. Estimates suggest area disturbed landsliding, perhaps sediment yield, essentially dependent on frequency Higher resolution maps will be required quantify these fluxes. Our results also indicate probability extreme events less than previous studies would predict.