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Movie 1. Suspended load sediment transport characteristics at slack water before flood: (a) Depth-averaged sediment concentration and depth-averaged velocity vectors; (b) Shear velocity magnitude and near-bed (1 m) velocity vectors; (c) Erosion rate; (d) Net change in bed thickness. At slack water, the sediment resuspended during maximum ebb is being wrapped around a transient eddy. The shear velocities are weak, and the material is rapidly depositing due to the decreased carrying capacity of the flow. This erosion at maximum flood and ebb and deposition at slack before ebb and flood results in sand bank generation on both sides of the headland.
This movie is part of a paper entitled "Modeling Sand Bank Formation Around
Tidal Headlands" by Signell and Harris, which can be found at
http://smig.usgs.gov/SMIG/features_0300/headland.html