REMISE EN SUSPENSION DES SEDIMENTS DANS LA ZONE DE DEFERLEMENT DES HOULES
(dossier articles) Remise en suspension des sédiments dans la zone de déferlement des houles – Résultats de mesures faites depuis le wharf de La Salie en mars 1979 Introduction 1. Site d’étude 1.1. Situation géographique 1.2. Évolution du littoral 2. Méthodologie 2.1. Conditions de prélèvements 2.2. Caractéristiques des houles 2.3. Nature des sédiments de fond […]
MATHEMATICAL MODELLING OF COHESIVE SEDIMENT AND PARTICUL CONTAMINANTS TRANSPORT IN LOIRE ESTUARY
(dossier articles) Mathematical modelling of cohesive sediment and particul contaminants transport in Loire estuary Introduction Model description – Hydrodynamics – Sediment transport – Bottom discretization – The Erosion term – Settling velociy – Lateral sliding – Shear stregth and consolidation – Implications of the multivariate transport software Result – Background – Sediment distribution – Tidal […]
SEDIMENT TRANSPORT AND MORPHOLOGY IN THE LOIRE RIVER – SITE OF FRESNE-SUR-LOIRE
(dossier articles) Sediment transport and morphology in the Loire river – Site of Fresne-sur-Loire 1. Introduction 2. Presentation of the site of Fresne-sur-Loire 3. Model description 4. Simulation of the april-may flood 4.1. Geometry data 4.2. Flood hydrograph 4.3. Sediment data 4.4. Upstream and downstream conditions 4.5. Summary calibration parametrs 5. Morphological simulation results Conclusion […]
EXPERIMENTS ON MASS EXCHANGE BETWEEN GROIN FIELDS AND MAIN STREAM RIVERS
Experiments on mass exchange between groin fields and main stream rivers Introduction Methods – Theory – Experimentat setup Results – Velocity measurements – Concentration measurements – Determination of entrainment coefficient k Parametrization Summary anc conclusions Acknowledgements References
TWO-DIMENSONIAL MODELING OF BED EVOLUTION IN RIVER: A CASE STUDY ON THE RIVER LOIRE
(dossier articles) Two-dimensional modeling of bed evolution in river: a case study on the river Loire Introduction Model description – Hydraulic model – Sediment transport model – Coupling The case – Presentation – Mesh and hydraulic computations Formulation for transport Results Conclusion Acknowledgements References
GENERAL METHODS OF STUDY OF MACROTIDAL ESTUARIES: THE BIO-SEDIMENTARY APPROACH
(dossier articles) General methods of study of macrotidal estuaries: the bio-sedimentary approach Introduction Review and discussion of recommented estuarine techniques The bio-sedimentary approach – Zoneography – Bio-sedimentary facies – Community chart – Definition and surey of pilot stations – Diversity indices. Distribution models – Target and key-species Example – The Somme cockle survey : a […]
HYDROMORPHODYNAMIC MODELING OF GROWN FIELDS
(dossier articles) Hydromorphodynamic modeling of grown fields Introduction Synthetic groin field computation 2D/3D hydrodynamics Morphodynamics Conclusions References
SEDIMENT DYNAMICS IN ANABRANCHED CHANNELS OF THE LOIRE RIVERS: THE STUDY CASE OF INGRANDES (FRANCE)
(dossier articles) Sediment dynamics in anabranched channels of the Loire river: the study case of Ingrandes (France) 1. Introduction 2. Study area 2.1. Location and morphological configuration 2.2. Works performed for raising the water level at the bifurcation to change the flow distribution 2.3. Influence of sills on flow distribution and morphological evolution 3. Methods […]
PROBLEMES DE SEDIMENTATION DANS LES ESTUAIRES – UN EXEMPLE : LA LOIRE
(dossier articles) Problèmes de sédimentation dans les estuaires – Un exemple : la Loire 1. Introduction 1.1. Historique 1.2. Difficultés de l’étude des estuaires 2. Pénétration de la marée 2.1. La marée dynamique 2.2. La marée de salinité 3. Sédimentation dans les estuaires 3.1. Point de vue dynamique 3.2. Point de vue physicochimique 3.3. Influence […]
DYNAMIQUE DES MATERIAUX COHESIFS DANS L’ESTUAIRE DE LA LOIRE
Dynamique des matériaux cohésifs dans l’estuaire de la Loire Introduction Hydraulique des estuaires Propagation de la marée saline Dynamique sédimentaire en estuaire Dynamique résiduelle des sédiments en estuaire Accumulations turbides en Loire Modélisation de la dynamique verticale de la crème de vase Taux de sédimentation global de l’estuaire de la Loire Conclusions et perspectives Références […]