Rice pile model with stochastic thresholds: each site has a random critical slope zc ∈ {1,2}. Avalanches exhibit self-organized criticality with power-law size distributions.
Pile height profile
Avalanche size distribution (log-log)
Parameters
Grains added: 0 Avalanches: 0 Last avalanche: 0
Oslo model (Christensen 1996) SOC exponent τ ≈ 1.55 Power law: P(s) ~ s−τ