Step-pool formation models and associated step spacing

Multi-scale characterization and evolution of channel forms in gravel-bed rivers

Auteurs :
CURRAN, J.C.
RINALDI, M.

Description :
This research presents flume studies designed to identify the processes responsible for step-pool formation. The experimental design includes a broad range of flow rates and sediment transport rates to address questions of how the step-pool bedform develops and the channel conditions most likely to produce step sequences. The experimental design included flow rates that created active transport and deposition of all sediment sizes, including the step-forming grains. This research evaluates the pre-existing formation models and proposes 3 new models : the rough bed, exhumation and dune models.


Type de document :
Congrès

Source :
Gravel-Bed Rivers Conference, 6, St. Jakob, Autriche, 2005-09, Earth surface processes and landforms, issn : 0197-9337, 2007, vol. 32, n°. 11, p. 1611-1627, nombre de pages : 17, Collation : Illustration, Références bibliographiques : 35 ref.

Date :
2007

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