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  • Postglacial topographic evolution of glaciated valleys : a stochastic landscape evolution model
  • British Columbia ; Canada ; Climatic change ; Cold area ; Glacial valley ; Glacier retreat ; Landscape dynamics ; Model ; Stochastic model
  • British Columbia ; Canada ; Changement climatique ; Dynamique du paysage ; Modèle ; Modèle stochastique ; Paraglaciaire ; Recul du glacier ; Vallée glaciaire ; Zone froide
  • The AA. have studied the evolution of an idealized glaciated valley during the period following retreat of ice using a numerical model. The model incorporates a stochastic process to represent deep-seated landsliding, non-linear diffusion
  • to represent shallow landsliding and an approximation of the Bagnold relation to represent fluvial sediment transport. It was calibrated using field data from several recent surveys within British Columbia, Canada. This model predicts a rapid rate of fluvial
  • sediment transport following deglaciation with a subsequent gradual decline, similar to that inferred for Holocene time. The AA. also describe how changes in the model parameters affect the estimated magnitude and duration of the paraglacial sediment pulse.
  • British Columbia ; Canada ; Fluvial processes ; Grain size distribution ; Model ; River bed ; Sediment load ; Sediment transport ; Slope gradient ; Stochastic model ; Tracer
  • British Columbia ; Canada ; Charge solide ; Fluviatile ; Granulométrie ; Lit fluvial ; Modèle ; Modèle stochastique ; Pente de versant ; Traceur ; Transport sédimentaire
  • with distance downstream. Rather, grain size varies erratically over short distances. A stochastic model best describes the observed variations, and should be adopted as an alternative to the exponential model in low order links. Characteristic variances
  • This paper examines the nature and causes of variations in the bed material texture of two streams on the Queen Charlotte Islands. The extant, functional model is found to be inadequate for explaining observed changes in grain size parameters