Measuring bedload in gravel-bed mountain rivers : averaging methods and sampling strategies

Field monitoring of bedload transport and particle entrainment : calibration efforts and new developments. Special issue

Auteurs :
LIU, Y.
MÉTIVIER, F.
LAJEUNESSE, E.
LANCIEN, P.
NARTEAU, C.
YE, B.
MEUNIER, P.
PIÉGAY, H.

Description :
A dataset of more than 1,000 individual bedload samples coupled with hydraulic flow variables (water depth and velocity) was collected on 2 high mountain rivers the torrent de Saint Pierre, a proglacial gravel-bed river in the French Alps, in July 2002 and the Urumqi River, in the Chinese Tianshan mountains during summer 2005 and 2006. Analysis of the dataset leads to question the usual section averaged sampling procedure of bedload using Helley-Smith type bedload sampler. It is shown that this procedure is inadequate to catch the full range of flow conditions.


Type de document :
Article de monographie

Source :
Geodinamica acta, issn : 0985-3111, 2008, vol. 21, n°. 1-2, p. 81-92, nombre de pages : 12, Collation : Illustration, Références bibliographiques : 28 ref.

Date :
2008

Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis