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Résultats de la recherche (17 résultats)

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  • Algarve ; Boulder ; Coastal environment ; Eighteenth Century ; Hydrodynamics ; Modelling ; Palaeogeography ; Portugal ; Sediment transport ; Tsunami
  • indicates that abrasion during transport and redeposition was not significant. The AA. envisage boulder deposition as having taken place during the Lisbon tsunami of AD 1755. The AA. use numerical hydrodynamic modeling of tsunami (and storm) waves to test
  • 2011
  • Atlantic Ocean ; Coastal dynamics ; Coastal environment ; Hydrodynamics ; Intertidal zone ; Model ; North Sea ; Sand wave ; Sediment transport ; Tidal current ; Tidal dune
  • Atlantique ; Courant de marée ; Dune de marée ; Dynamique littorale ; Hydrodynamique ; Littoral ; Mer du Nord ; Modèle ; Transport sédimentaire ; Vague de sable ; Zone intertidale
  • 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
  • 2011
  • A two-dimensional morphodynamic model of gravel-bed river with floodplain vegetation
  • Canada ; Capacité de charge ; Charge solide ; Chenal anastomosé ; Cours d'eau ; Dynamique fluviale ; Erosion des berges ; Géométrie hydraulique ; Modèle ; Montréal ; Méandre ; Plaine d'inondation ; Québec ; Végétation ; Végétation ripicole
  • Bank erosion ; Braided channel ; Canada ; Carrying capacity ; Channel geometry ; Floodplain ; Fluvial dynamics ; Meander ; Model ; Montréal ; Quebec ; Riparian vegetation ; Sediment load ; Stream ; Vegetation
  • In this paper account is taken of the effects of riparian and floodplain vegetation on bank strength, floodplain flow resistance, shear stress partitioning, and bedload transport. This is incorporated into an existing 2D hydrodynamic-morphological
  • model. By applying the new model to an initially straight and single-threaded channel, the way that its planform and cross-sectional geometry evolve for different hydraulic and floodplain vegetation conditions is demonstrated. The results show
  • 2011
  • Nonlinearity and unsteadiness in river meandering : a review of progress in theory and modelling
  • Années 1967-2006 ; Bibliographie ; Classification ; Cours d'eau ; Dynamique fluviale ; Géométrie hydraulique ; Lit fluvial ; Modèle ; Méandre ; Topographie ; Transport sédimentaire
  • Bibliography ; Channel geometry ; Classification ; Fluvial dynamics ; Meander ; Model ; River bed ; Sediment transport ; Stream ; Topography
  • . Hence they first derive a classification of river bends based on a systematic assessment of the various physical mechanisms affecting their morphodynamic equilibrium and their evolution in response to variations of hydrodynamic forcing. They then review
  • varying. In conclusion, they discuss how the present assessment relates to the debate on meander modelling of the late 1980s and suggest promising lines of future developments.
  • 2011
  • Arctic Ocean ; Atmospheric circulation ; Atmospheric disturbance ; Atmospheric pressure ; Barents Sea ; Climatic anomaly ; Cyclone ; El Niño ; European part of Russia ; Hydrodynamics ; Hydrometeorology ; Modelling ; Ocean atmosphere interaction
  • 2011
  • Carrying capacity ; China ; Debris flow ; Grain size distribution ; Hydrodynamics ; Impact ; Natural hazards ; Risk management ; Watershed ; Yunnan
  • . Analysis of the impact force of 38 debris flow surges gives an empirical value for the ratio of the hydrodynamic pressure to the momentum flow density, i.e. the product of debris-flow density and mean velocity square, which provides a very valuable basis
  • 2011
  • Damage ; Environmental security ; Flood ; Flood control ; Hydrodynamics ; Hydrological regime ; Low water ; Management ; Natural hazards ; Russia ; Volga ; Water quality ; Water resources ; Watershed
  • 2011
  • Air mass ; Atlantic Ocean ; Atmospheric circulation ; Atmospheric pressure ; Baltic Sea ; Climate oscillation ; Climatic change ; Hydrodynamics ; Hydrometeorology ; North Atlantic Ocean ; Ocean atmosphere interaction ; Twentieth Century ; Watershed
  • 2011
  • This study focuses on the dominant Faro-Olhão and Armona inlets in the Ria Formosa barrier island system of southern Portugal. The equilibrium state and future evolution of the system are inferred using a range of morphological and hydrodynamic
  • 2011
  • Asturias ; C 14 dating ; Fluvial terrace ; Grain size distribution ; Hydrodynamics ; Sediment budget ; Sediment transport ; Sedimentology ; Spain ; Stream
  • 2011
  • Damage ; Flood ; Hydroclimatology ; Hydrodynamics ; Inundation ; Low water ; Mudflow ; Natural hazards ; Russia ; Spatial analysis ; Stream flow ; Twentieth Century
  • 2011
  • Bank erosion ; Channel geometry ; Cross section ; Experimentation ; Hydrodynamics ; Meander ; Stream ; Stream flow ; Turbulence
  • 2011
  • Australia ; Channel geometry ; Experimentation ; Hydrodynamics ; Queensland ; River bed ; Sediment transport ; Shear stress ; Stream flow ; Turbulence
  • 2011
  • Cantilever ; Channel geometry ; Coastal environment ; England ; Erosion rate ; Estuary ; Hampshire ; Hydrodynamics ; Intertidal zone ; Riparian vegetation ; Salt marsh ; Tidal creek ; Tide ; United Kingdom
  • 2011
  • In order to understand the evolution of hydrodynamics and detachment soil rate with different stages of degradation of a rangeland by overstocking, two rainfall simulations were conducted on 1 m2 experimental plots in an abandoned cultivated South
  • 2011
  • Carrying capacity ; Concept ; Hydrodynamics ; Sediment transport ; Shear stress ; Stream ; Stream flow
  • 2011
  • Concept ; Critical point ; Drainage network ; Hydrodynamics ; Percolation ; Slope gradient ; Soil moisture ; Watershed
  • 2011