bedload

Bedload transport though vegetation

Experiments using simulated vegetation to understand how different vegetation densities (0-4% density by area) modify near-bed flow turbulence, flow structures and bedload transport.  Data include spatial variation in bedload fluxes around vegetation and total bedload fluxes measured using high-speed video for 12 runs.  Near-bed flow instantaneous velocities and velocity profiles (streamwise and vertical directions) were also measured in 3 streamwise transects using PIV. 

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Bed load transport in steep boulder bed channels

We designed a set of flume experiments with a simple, well-defined bed configuration to test our modified sediment transport equation. The experiments were conducted in a small (15 cm wide, 4.5 m long) flume set at a gradient of ten percent. This is the steepest gradient at which fluvial processes have been hypothesized to dominate over debris flow scour and deposition. At this gradient, the influence of the immobile grains on the flow and sediment transport will be relatively large.