Sunday, November 20, 2011

Dune Week

Looks like folks are talking about sand dunes and eolian transport on the geoblogs this week.

Here's some video I shot of blowing sand - you can see at least two distinct modes of movement - large grains are either tumbling individually, or avalanching down the slip face. Smaller grains, however, are picked up by the wind and bouncing (saltating) as they are transported.

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