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Résultats de la recherche (10 résultats)

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  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue
  • Antarctique ; Bathymétrie ; Calotte glaciaire ; Déglaciation ; Glaciaire ; Géomorphologie ; Géophysique ; Modèle conceptuel ; Plate-forme continentale ; Pléistocène ; Sédimentologie
  • Antarctica ; Bathymetry ; Conceptual model ; Continental shelf ; Deglaciation ; Geomorphology ; Geophysics ; Glacial features ; Ice sheet ; Pleistocene ; Sedimentology
  • of local controls in the form of bathymetry and drainage basin size. These data provide important constraints for numerical models that attempt to predict the dynamics of large polar ice sheets.
  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue
  • Contrainte de cisaillement ; Ecoulement glaciaire ; Glaciaire ; Lithologie ; Modèle ; Moraine ; Susceptibilité magnétique
  • Glacial features ; Glacial flow ; Lithology ; Magnetic susceptibility ; Model ; Moraine ; Shear stress
  • This paper is aimed at exploring whether there is a simple, reproducible relationship between fabric development and shear-strain magnitude that could be used to help test the bed-deformation model using the geologic record. Four basal tills
  • ). This paper fully synthetizes these results and provides additional data to summarize the experimental basis for interpreting till fabric in the context of the bed-deformation model.
  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue
  • Canada ; Contrainte de cisaillement ; Déglaciation ; Erosion glaciaire ; Glaciaire ; LANDSAT ; Modèle ; Moraine ; Moraine latérale ; Northwest Territories ; Télédétection
  • Canada ; Deglaciation ; Glacial erosion ; Glacial features ; LANDSAT ; Lateral moraine ; Model ; Moraine ; Northwest Territories ; Remote sensing ; Shear stress
  • The AA. review the characteristics of lateral shear margin moraines and present 2 quantitative models for their formation : 1) differential erosion rates related to lateral variations in the stream velocity and 2) lateral incursion from inter-stream
  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue
  • The aim of this review is to acknowledge the interrelationship between topography and ice sheets in Antarctica that must have necessarily taken place during the last 34 million years. Several attempts have been made using numerical modelling
  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue
  • are characterized by 3 seismic facies. A model for the formation of these typical sediment successions is proposed in which valley incision and infill are causally linked. This model is based on the theory of glaciohydraulic supercooling beneath ice-sheet margins
  • Superimposition of ribbed moraines on a palaeo-ice-stream bed : implications for ice stream dynamics and shutdown
  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue
  • , internal structure (from ground penetrating radar (GPR) surveys and from glaciogeological analysis) and sedimentological characteristics (from sediment architecture and lithofacies analysis). The observations suggest an abrupt change in ice dynamics
  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue
  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue
  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue
  • Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue