These are some of the experiments performed by Jeremy Venditti at the University of British Columbia. Planform views with flow from left to right. Grain size is 0.5 mm sand. Grid spacing is 0.115 m. The first movie show transition from plane bed to 2-D dunes. The second movie shows the transition from 2-D to 3-D dunes.

Details on the experiment and what is shown in the movie can be found in:

Venditti, J.G., Church, M.A., and Bennett, S.J., 2005, Bed form initiation from a flat sand bed: Journal of Geophysical Research, v. 110, F01009, doi: 10.1029/2004JF000149

Downloadable at: http://www.sfu.ca/~jvenditt/publications/j.1365-3091.2005.00748.x.pdf

and

Venditti, J.G., Church, M., Bennett, S.J., 2005, On the transtiion between 2D and 3D dunes: Sedimentology, v. 52, doi: 10.1111/j.1365-3091.2005.00748.x, p. 1343-1359.

Downloadable at: http://www.sfu.ca/~jvenditt/publications/j.1365-3091.2005.00748.x.pdf

 

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