Fig. 8
Results of the sensitivity analysis used to determine the best-fit Bingham parameters for the West Salt Creek rock avalanche. Impact area fitness is calculated using a dimensionless number that measures the misfit between a user specified impact area and the simulated impact area. Lower numbers indicate better fitness (a value of zero indicates perfect agreement between observed and simulated impact area). The best compromise between simulating the observed impact area and deposit distribution is found for τyield =32 KPa and μbingham = 7 KPa*s. Volume is in m3