Mots-clés
Atlantique ; Courant de marée ; Dune de marée ; Dynamique littorale ; Hydrodynamique ; Littoral ; Mer du Nord ; Modèle ; Transport sédimentaire ; Vague de sable ; Zone intertidaleAtlantic Ocean ; Coastal dynamics ; Coastal environment ; Hydrodynamics ; Intertidal zone ; Model ; North Sea ; Sand wave ; Sediment transport ; Tidal current ; Tidal duneAtlántico ; Corriente de marea ; Dinámica litoral ; Hidrodinámica ; Litoral ; Mar del Norte ; Modelo ; Transporte sedimentario ; Zona intertidalA parameterization of the wavelength of tidal dunes
Auteur(s) et Affiliation(s)
BLONDEAUX, P.
Dep. of Civil, Environmental and Architectural Engineering, Univ., Genoa, Italie
VITTORI, G.
Dep. of Civil, Environmental and Architectural Engineering, Univ., Genoa, Italie
Description :
In this study, the model of Besio et al. (2006) is used to generate a database that allows a parameterization of the length of tidal dunes to be obtained. The predictions are then analysed and a formula is proposed to estimate the wavelength of tidal dunes as a function of the parameters of the problem. The wavelength of the dunes is found to increase when the water depth is increased and/or the strength of the tidal current is decreased. On the other hand, the size of the bottom material (if medium sand is considered) and the tidal ellipticity are found to have a relatively small influence on the length of the bottom forms. The formula proposed provides results which are consistent with field observations.
Type de document :
Article de périodique
Source :
Earth surface processes and landforms, issn : 0197-9337, 2011, vol. 36, n°. 9, p. 1152-1161, nombre de pages : 10, Références bibliographiques : 30 ref.
Date :
2011
Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)