Analysis of debris flow surges using the theory of uniformly progressive flow

Auteur :
HUNGR, O.

Description :
Coarse debris flows develop surges with distinct longitudinal sorting. Although highly unsteady, such flow often appears to attain a steady-state condition, moving over long distances with approximately constant velocity and maximum depth. A simple model is presented, using the theory of uniformly progressive flow and incorporating zoned longitudinal variation in rheology. It is shown that non-homogeneity can cause very significant magnification of the peak discharge, depending on the slope angle and on the length of the frontal boulder concentration.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2000, vol. 25, n°. 5, p. 483-495, Collation : Illustration, Références bibliographiques : 33 ref.

Date :
2000

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley