Fiche Document

Fiche du document 1519

Type de documentTexte
PrécisionPublications_scientifiques
ThèmeAménagementsArchéologie
Contaminants associésCrues
ErosionGéochimie
GéomorphologieGestion
Interactions faune ou florePaléoenvironnements
RéglementationStocks
ThermieTransport solide
Versants
AuteurRodrigues S. et al.
Date de publication2014
ReferenceAlternate bars in a sandy gravel bed river: generation , migration and interactions with superimposed dunes, Earth Surface Processes and Landforms, Vol. 40, pp 610?628
RattachementE.A. 6293 GéHCO, GéoHydrosystèmes Continentaux, Faculté des Sciences et Techniques, Université François Rabelais de Tours Deltares and Delft University of Technology, Delft, The Netherlands Laboratoire d?hydraulique Saint Venant, ENPC, EDF R&D, CET
Période considéréeQuaternaire
Localisation OSLA1Pas d'information
Localisation OSLA2Pas d'information
Localisation OSLA3Pas d'information
Localisation OSLA4Pas d'information
Document numériséeOuiNon
FormatBMPJPGPDFPNGPPT
Nom du fichierRodrigues_et_al-2015-Earth_Surface_Processes_and_Landforms.pdf
Situation
Aperçu

Documents liés

Type Références Date Auteur
IMG Figure 1: Location of the Ingrandes study site and close-up showing the bed elevation of the channels. 2014 Rodrigues S. et al.
IMG Figure 2: Discharge distribution in the main and secondary channels before and after construction of the sills (data from DREAL Pays de la Loire). 2014 Rodrigues S. et al.
IMG Figure 3: Hydrographs at Montjean-sur-Loire gauging station (6 km upstream), associated surveys carried out during the study period and average hydraulic characteristics of the secondary channel. 2014 Rodrigues S. et al.
IMG Figure 4: Measured (open symbols) and predicted (closed symbols) values at cross-section T4 of (A) width-to depth ratio (?) and flow velocity, (B) Shields mobility parameter (related to grain friction... 2014 Rodrigues S. et al.
IMG Figure 5: Width-to-depth ratio (?) of the secondary channel calculated for various flow conditions using the Hydrariv model. 2014 Rodrigues S. et al.
IMG Figure 6: Bars present in the secondary channel of the study site of Ingrandes 2014 Rodrigues S. et al.
IMG Figure 7: Aerial photograph of the study site (source: GIP Loire Estuaire) showing alternate bars in the secondary channel (A). Lateral pool and thalweg (low-flow period) separating two alternate bars... 2014 Rodrigues S. et al.
IMG Figure 8: Digital elevation models (A) and sediment balance maps (B) detailing sediment budgets and area of calculation obtained by bathymetric surveys (bold letters) between 1997 and 2005 (see Figure... 2014 Rodrigues S. et al.
IMG Figure 9: Scour and fill depths obtained for cross-sections T1, T5, T7 and T9 between 2003 and 2006: (A) bed topography during the dry periods; (B) scour and fill depths during flood events; (C) sedim... 2014 Rodrigues S. et al.
IMG Figure 10: Grain size and sorting of surface sediments present on the bars and on the channel bed between 2003 and 2006 2014 Rodrigues S. et al.
IMG Figure 11: Morphology in 2005 (A), internal structure (B), migration front and associated longitudinal scour and fill depths (C) of bar 3b (see Figure 8 for location) deposited in the downstream part ... 2014 Rodrigues S. et al.
IMG Figure 12: (A) Evolution of dune height and length on bars present in the channel during the flood event of 2001 (surveys C to G). LP1 to LP5 correspond to the bathymetrical longitudinal tracks. (B) A... 2014 Rodrigues S. et al.
IMG Figure 13: Evolution of average height and length of dunes present on each bar between surveys C and G. 2014 Rodrigues S. et al.
IMG Figure 14: Cross-sectional evolution of average dune height (measured along the longitudinal tracks LP1 to LP5) on bars 2 to 5 between surveys C to G (flood of 2001). Right and left bank are located o... 2014 Rodrigues S. et al.
IMG Figure 15: Comparison of longitudinal bathymetrical tracks (LP1 and LP4) performed on bar 3 during the last peak of the 2001 flood for four discharge conditions (D, E, F and G; from light grey to dark... 2014 Rodrigues S. et al.