Channel adjustment of an unstable coarse-grained stream: opposing trends of boundary and critical shear stress, and the applicability of extremal hypotheses

Auteurs :
SIMON, A.
THORNE, C.R.

Description :
The eruption of Mount St. Helens, Washington, and the conseqent disruption of the Toutle River system in 1980 has provided the opportunity to collect and analyse a data set that includes hydraulic, sediment transport, sedimentologic, and morphologic information. Rapid and dramatic changes in channel morphology from 1980 to 1992 make the Toutle River system a natural laboratory in which to investigate the validity of extremal hyotheses on a temporal basis using both force (or stream energy and stream power) and resistance criteria.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 1996, vol. 21, n°. 2, p. 155-180, Collation : Illustration, Références bibliographiques : 61 ref.

Date :
1996

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