Patterns of grain-size dependent sediment transport in low-ordered, ephemeral channels

Auteur(s) et Affiliation(s)

YUILL, B.T.

Pontchartrain Inst. for Environmental Science, Univ., New Orleans, Etats-Unis

NICHOLS, M.H.

Southwest Watershed Research Center, Agricultural Research Service, US Dept. of Agriculture, AZ, Tucson, Etats-Unis

Description :
This study investigates grain-size selective transport patterns in an alluvial, headwater watershed with an ephemeral flow regime : the Walnut Gulch Experimental Watershed (WGEW) in south-eastern Arizona. The aims of this study are (1) to identify if the concentration of transported sediment exhibit grain-size selective transport patterns, (2) to quantify how the grain-size selective transport patterns, if present, are different from the mean pattern of the total sediment load and from one another, (3) to explore the dependency of grain-size selective transport patterns on metrics of flow strength, duration, and sediment source, and (4) to determine if the grain-size selective transport patterns significantly affect watershed sediment delivery.

Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2011, vol. 36, n°. 3, p. 334-346, nombre de pages : 13, Références bibliographiques : 59 ref.

Date :
2011

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

Langue :
Anglais