Empirical investigation of friction weakening of terrestrial and Martian landslides using discrete element models.

ABSTRACT: Understanding what controls the travelling distance of large landslides has been the topic of considerable debate. By combining observation and experimental data with depth-averaged continuum modelling of landslides and generated seismic waves, it was empirically observed that lower effective friction had to be taken into account in the models to reproduce the dynamics and runout distance of larger volume landslides. Moreover, such simulation and observation results are compatible with a friction weakening with velocity as observed in earthquake mechanics. We investigate here as to whether similar empirical reduced friction should be put into discrete element models (DEM) to reproduce observed runout of large landslides on Earth and on Mars. First we show that, in the investigated paramete

SUBMITTER: Borykov T 

PROVIDER: S-EPMC6529039 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature