Rill hydraulics on a semiarid hillslope, Southern Arizona

Auteurs :
ABRAHAMS, A.D.
GANG LI,
PARSONS, A.J.

Description :
Seventy field experiments were conducted in seven rills located on a semiarid rangeland hillslope underlain by gravelly soils at Walnut Gulch, Arizona. A multiple regression analysis reveals that slope and soil materials, either directly or indirectly through bed roughness, exert almost as much influence on flow velocity as does discharge. Three alternative methods ar developed for predicting flow velocity in the rills under study and give good results with the largest root mean square deviation.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 1996, vol. 21, n°. 1, p. 35-47, Collation : Illustration, Références bibliographiques : 30 ref.

Date :
1996

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