title: Two scenarios for avalanche dynamics in inclined granular layers.
abstract: We report experimental measurements of avalanche behavior of thin granular layers on an inclined plane for low volume flow rate. The dynamical properties of avalanches were quantitatively and qualitatively different for smooth glass beads compared to irregular granular materials such as sand. Two scenarios for granular avalanches on an incline are identified, and a theoretical explanation for these different scenarios is developed based on a depth-averaged approach that takes into account the differing rheologies of the granular materials.
authors.affiliation: Condensed Matter and Thermal Physics & Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. btamas@szfki.hu
authors.forename: Tamás
authors.initials: T
authors.lastname: Börzsönyi
authors.forename: Thomas C
authors.initials: TC
authors.lastname: Halsey
authors.forename: Robert E
authors.initials: RE
authors.lastname: Ecke
mesh_terms: D003102:Colloids / Q000032:analysis / Q000737:chemistry*; D003198:Computer Simulation; D004190:Disasters; D005844:Geology / Q000379:methods*; D008962:Models, Theoretical
chemical_list: D003102:Colloids