Modelling erosion and deposition in geophysical granular mass flows

During hazardous geophysical mass flows, such as rock or snow avalanches, debris flows and volcanic pyroclastic a continuous exchange of material can occur between the slide bed. The net balance erosion deposition particles drastically influence behaviour these flows. Recent advances in describing non-monotonic effective basal friction internal granular rheology depth averaged theories have enabled small scale laboratory experiments (see fig. 1) to be quantitatively reproduced also implemented large models improve hazard mitigation.