Reduced-complexity flow routing models for sinuous single-thread channels : intercomparison with a physically-based shallow-water equation model

Auteur(s) et Affiliation(s)



Description :
This study presents two new reduced-complexity flow routing schemes developed specifically for application in single-thread rivers. Output from both schemes is compared with that from a more sophisticated model that solves the depth-averaged shallow water equations. This comparison provides the first demonstration of the potential for deriving realistic predictions of in-channel flow depth, unit discharge, energy slope and unit stream power using simple flow routing schemes. It also highlights the inadequacy of modelling unit stream power, shear stress or sediment transport capacity as a function of local bed slope, as has been common practice in a number of previous reduced-complexity models.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2009, vol. 34, n°. 5, p. 641-653, nombre de pages : 13, Références bibliographiques : 0,5 p.

Date :
2009

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