Abstract

On the Dynamics of Scree Slopes It is shown that the following dynamical phenomena occur on a scree slope: Collapse because of lack of stability, rapid slides of debris material, slow sliding of large blocks, jumping and rolling of large stones, and particle-separation due to a sieving effect. The mechanisms of these phenomena are investigated in detail; it is shown that the stability and the slow sliding of blocks can be explained by soil mechanics methods, the debris slides by the law of dry friction, the rolling of stones by the laws or rolling of spheres, and the sieving effect by a theory analogous to that encountered in the filtration of suspensions through porous media.

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