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(Article of periodic en Anglais - 2010)

Document title

Modelling the effect of time-dependent river dune evolution on bed roughness and stage

Authors(s) and Affiliation(s)

PAARLBERG A.J. (1 2) ; DOHMEN-JANSSEN C.M. (2) ; HULSCHER S.J.M.H. (2) ; TERMES P. (1) ; SCHIELEN R. (2 3) ;
(1) HKV Consultants, Lelystad, PAYS-BAS
(2) Univ. of Twente, Enschede, PAYS-BAS
(3) Rijkswaterstaat Centre for Water Management, Lelystad, PAYS-BAS

Abstract

This paper presents an approach to incorporate time-dependent dune evolution in the determination of bed roughness coefficients applied in hydraulic models. Dune roughness is calculated by using the process-based dune evolution model of Paarlberg et al. (2009) and the empirical dune roughness predictor of Van Rijn (1984). The approach is illustrated by applying it to a river of simple geometry in the 1-D hydraulic model SOBEK for two different flood wave shapes. The new approach helps to reduce uncertainties in bed roughness coefficients of flow models, especially for river systems with strong variations in discharge with time

Source

Article of periodic

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

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

Millesime : 2010, vol. 35, no15 [pp. 1854-1866]

Bibliographic references : 56 ref.

Collation : 14 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2074

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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