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(Article of periodic en Anglais - 2009)

Document title

Modelling hyperconcentrated flow in the Yellow River

Authors(s) and Affiliation(s)

VAN MAREN D.S. (1 2) ; WINTERWERP J.C. (1 2) ; WU B.S. (3) ; ZHOU J.J. (3) ;
(1) Fac. of Civil Engineering and Geosciences, Univ. of Technology, Delft, PAYS-BAS
(2) Deltares, Delft, PAYS-BAS
(3) Fac. of Hydraulic Engineering, Univ. Beijing, Tsinghua, CHINE

Abstract

The aim of this paper is to analyse erosion and depositional processes during hyperconcentrated floods in the Yellow River, using observations and numerical model experiments. Numerical modelling experiments of these floods reveal that sedimentation is largely caused by large vertical concentration gradients, both in the channel during the rising stage of the flood, as well as on the floodplains, during a later stage of the flood. Erosion prevails when the sediment is largely held in suspension due to hindered settling, and is strengthened by the reduced wetted cross-section caused by massive sedimentation on the floodplain. Observed patterns of erosion and sedimentation during these floods can be qualitatively reproduced with a numerical model in which sediment-induced density effects and hindered settling are included

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2009, vol. 34, no4 [pp. 596-612]

Bibliographic references : 1 p.

Collation : 16 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1760

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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