Virtual rate and mean distance of travel of individual clasts in gravel-bed channels

Auteurs :
HASSAN, M. A.
CHURCH, M.
ASHWORTH, P. J.

Description :
Travel distance in gravel-bed rivers of tagged particles of various sizes are related to excess stream power estimated for peak discharge. Mean distance of movement, irrespective of grain size, is weakly correlated with stream power, especially near the threshold of movement. There may be several reasons for the weak correlation, including variable effects of bed structure, varying magnitudes of sediment mobilizing events and sampling problems. Nonetheless, an underlying general relation is indicated by the data, which are derived from a wide range of flow regime types.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 1992, vol. 17, n°. 6, p. 617-627, Collation : Illustration, Références bibliographiques : 35 réf.

Date :
1992

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