VARIFLUX – TRANSPORTS FLUVIAUX DISSOUS ET PARTICULAIRES A FINE RESOLUTION TEMPORELLE / METHODES ET INCERTITUDES
(dossier articles) Variflux – Transports fluviaux dissous et particulaires à fine résolution temporelle – Méthodes et incertitudes 1. Introduction 2. Matériel et méthodes 3. Résultats et discussions – Action 1 : Caractérisation de la variabilité des C et des flux à fine résolution temporelle et prédiction des incertitudes liées à la fréquence de surveillance et […]
EROSION D’UNE VASE DE L’ESTUAIRE DE LA LOIRE SOUS L’ACTION DU COURANT
(dossier articles) Érosion d’une vase de l’estuaire de la Loire sous l’action du courant Introduction Matériels et méthodes expérimentales Résultats – Essais d’érosion de vases – Loi d’érosion pour la vase de Loire – Diamètre, masse volumique et cohésion des copeaux de vase érodés Conclusions Références
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 […]
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
FRESHWATER PROTECTED AREAS : AN EFFECTIVE MEASURE TO RECONCILE CONSERVATION AND EXPLOITATION OF THE THREATENED EUROPEAN EELS (ANGUILLA ANGUILLA) ?
Freshwater protected areas : an effective measure to reconcile conservation and exploitation of the threatened European eels (Anguilla anguilla)? Auteurs : J. Cucherousset, J.-M. Paillisson, A. Carpentier -Introduction -Materials and methods Study area Traditional fishery survey Eel population survey -Results The traditional fishery Eel population characteristics Stock assessment, fishing mortality and silver eel production -Discussion […]
HYDROMORPHODYNAMIC MODELING OF GROWN FIELDS
(dossier articles) Hydromorphodynamic modeling of grown fields Introduction Synthetic groin field computation 2D/3D hydrodynamics Morphodynamics Conclusions 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 […]
PARTICULATE ORGANIC CARBON IN THE ESTUARINE TURBIDITY MAXIMA OF THE GIRONDE, LOIRE AND SEINE ESTUARIES: ORIGIN AND LABILITY
(dossier articles) Particulate organic carbon in the estuarine turbidity maxima of the Gironde, Loire and Seine estuaries: origin and lability Introduction Materials and methods – Study area – Sampling and database – Determination of organic carbon contents and their labile fraction – Fluvial POC inputs and origin Results – POC contents in the TSS from […]
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 […]
ETUDE DES FONDS SABLEUX EN LOIRE-ATLANTIQUE – NATURE ET EVOLUTION DES RIDENS
(dossier articles) Étude des fonds sableux en Loire-Atlantique – Nature et évolution des ridens Études des ridens par sondages – Étude autour d’un riden – Nature et évolution des groupes de ridens – Conclusions