A cellular automaton for the factor of safety field in landslides modeling

Details A cellular automaton for the factor of safety field in landslides modeling A cellular automaton for the factor of safety field in landslides modeling

2006-03-13

arxiv.org/abs/physics/0603094v1

Geophys. Rev. Lett. 33, L01403 (2006)

Physics

Geophysics

4 pages, 3 figures

Scientific paper

10.1029/2005GL024759

Landslide inventories show that the statistical distribution of the area of recorded events is well described by a power law over a range of decades. To understand these distributions, we consider a cellular automaton to model a time and position dependent factor of safety. The model is able to reproduce the complex structure of landslide distribution, as experimentally reported. In particular, we investigate the role of the rate of change of the system dynamical variables, induced by an external drive, on landslide modeling and its implications on hazard assessment. As the rate is increased, the model has a crossover from a critical regime with power-laws to non power-law behaviors. We suggest that the detection of patterns of correlated domains in monitored regions can be crucial to identify the response of the system to perturbations, i.e., for hazard assessment.

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