Surface tension and friction coefficients in shallow, laminar overland flows through organic litter

Auteur :
DUNKERLEY, D.

Description :
This study investigates the contribution of surface tension forces to friction coefficients in shallow, laminar interrill flows. Friction coefficients in these flows are known to be increased greatly by organic litter and by stems. Fine litter provides extensive edges along wich surface tension menisci can be drawn up, and evaluating the significance of this in the frictional retardation of flow was the primary objective of the experiments reported here. The main strategy used here to identify the effects of surface tension is to reduce its value by chemical means and observe the effects on flow properties.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2002, vol. 27, n°. 1, p. 45-58, nombre de pages : 14, Collation : Illustration, Références bibliographiques : 16 ref.

Date :
2002

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