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Geosciences LibreTexts

10: Movement of Sediment by Water Flows

  • Page ID
    4210
    • 10.1: Introduction to the Movement of Sediment by Water Flows
    • 10.2: The Bed, the Flow, and the Load
      The aggregate of sediment particles being transported by a flow at a given time is called the load. The bed comprises all of the particles that at a given time are motionless and in direct contact with the substrate, and the load comprises all of the particles that are in motion in a given flow, whether or not they are in contact with the bed. That leaves the less certain definition of the flow: all the material, fluid and solid, that at a given time are in motion above the bed.
    • 10.3: Transport Mode Versus Flow Intensity
      As with so many aspects of sediment transport, it is valuable to think in terms of regimes: distinctive ranges of the phenomenon, characterized by modes of particle movement that differ from other ranges. In this case, such regimes have been called transport stages. To develop a good framework for visualizing and assessing the results of experiments on transport stages, start by making a list of the variables that are likely to be important in determining the transport stage.
    • 10.4: Bed Load
    • 10.5: Suspension in a Shear Flow- The Diffusional Theory of Suspension