Abstract
The dependence of the landslide mobility on the gravity force was re-examined. Martian landslides inside the Valles Marineris canyon systems show unusually long run-out distance which induces low apparent coefficient of friction, suggesting high mobility. We focus on the influence of low gravity against the landslide mobility, and examined the run-out distance of the front edge and the center of mass under various gravity conditions, using larger number of grains than Mashimaya [2004] did to avoid the peculiar behavior of grain flow with small number of grains. Here we report the results and discuss the mechanism of Martian landslides.