Suspended sediment transport and deposition over a dune : Río Paraná, Argentina

Auteur(s) et Affiliation(s)

KOSTASCHUK, R.

Dep. of Geography, Univ. of Ontario, Guelph, Canada

SHUGAR, D.

Dep. of Earth Sciences, Simon Fraser Univ, BC, Burnaby, Canada

BEST, J.

Dep. of Geology and Geography and Ven Te Chow Hydrosystems Lab., Univ. of Illinois, Urbana, Etats-Unis

PARSONS, D.

School of Earth and Environment, Univ., Leeds, Royaume-Uni

LANE, S.

Dep. of Geography, Univ., Durham, Royaume-Uni

HARDY, R.

School of Earth and Environment, Univ., Leeds, Royaume-Uni

ORFEO, O.

Centro de Ecología Aplicada del Litoral (CEOCAL-CONICET), Corrientes, Argentine

Description :
Field data from the Rio Paraná, Argentina, are used to examine patterns of suspended sediment transport over a sand dune. Measurements of three-dimensional velocity are made with an acoustic Doppler current profiler whilst suspended sediment concentration and particle size have been quantified using a laser in situ sediment scattering transmissometer. The field measurements and model predictions both indicate that deposition of sand travelling in suspension close to the bed contributes to dune migration and may impart considerable control on the lee side slope angle.

Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2009, vol. 34, n°. 12, p. 1605-1611, nombre de pages : 7, Références bibliographiques : 25 ref.

Date :
2009

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

Langue :
Anglais