Numerical investigation of the effect of cohesion and ground friction on snow avalanches flow regimes.

ABSTRACT: With ongoing global warming, snow avalanche dynamics may change as snow cohesion and friction strongly depend on temperature. In the field, a diversity of avalanche flow regimes has been reported including fast, sheared flows and slow plugs. While the significant role of cohesion and friction has been recognized, it is unclear how these mechanical properties affect avalanche flow regimes. Here, we model granular avalanches on a periodic inclined plane, using the distinct element method to better understand and quantify how inter-particle cohesion and ground friction influences avalanche velocity profiles. The cohesion between particles is modeled through bonds that can subsequently break and form, thus representing fragmentation and aggregation potentials, respectively. The implemented mod

SUBMITTER: Ligneau C 

PROVIDER: S-EPMC8846535 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature