The impact of exceptional events on erosion, bedload transport and channel stability in a step-pool channel

Auteur(s) et Affiliation(s)

TUROWSKI, J.M.

Swiss Federal Research Inst. WSL, Birmensdorf, Suisse

YAGER, E.M.

Center for Ecohydraulics Research, Dep. of Civil Engineering, Univ. of Idaho, Boise, Etats-Unis

BADOUX, A.

Swiss Federal Research Inst. WSL, Birmensdorf, Suisse

RICKENMANN, D.

Swiss Federal Research Inst. WSL, Birmensdorf, Suisse

MOLNAR, P.

Inst. of Environmental Engineering,ETH, Zürich, Suisse

Description :
Sediment transport in the Erlenbach, a small stream with step-pool morphology in the canton of Schwyz, Switzerland, has been monitored for more than 20 years. During this time three exceptional events (events with high sediment yield and long return times that have a large effect on channel morphology) have impacted the stream and partly or completely rearranged the existing step-pool morphology. The aim of this paper is to present observations of these exceptional events and discuss the implications of boulder mobility on long-term channel stability.

Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2009, vol. 34, n°. 12, p. 1661-1673, nombre de pages : 13, Références bibliographiques : 1,5 p.

Date :
2009

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

Langue :
Anglais