The effects of survey frequency on estimates of scour and fill in a braided river model

Auteurs :
LINDSAY, J.B.
ASHMORE, P.E.

Description :
This study examines the magnitude of bias associated with compensation events that occur at the temporal scale of braided channel evolution, and identifies specific channel kinetics that cause scour-fill compensation. By using a small-scale physical model it is possible to essentially eliminate compensation resulting from variation in discharge by maintaining constant discharge. Also, river-bed topography can be mapped relatively easily and frequently using a flume. Hence, a small-scale braided gravel-bed river model is used in this study to examine the magnitude and nature of scour-fill and to relate the spatial pattern of compensation to braided channel kinetics.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2002, vol. 27, n°. 1, p. 27-43, nombre de pages : 17, Collation : Illustration, Références bibliographiques : 29 ref.

Date :
2002

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