A bedform is a depositional feature whose genesis is through the action of a forcing fluid (e.g., air or water) resulting in the movement of the granular material, manifesting into characteristic surface morphology indicative of the flow parameters in operation.
Deposits of sand and granule-size particles transported principally in saltation in flowing fluids organized into a regularly repeated pattern which forms on a solid surface because of the shearing action of a fluid. Bedforms can be aeolian or subaqueous, erosional, or depositional surface features. Fluids in which they form can be wind, water stream, or dense mixtures of particles and gases (e.g., volcanic or impact-induced base surges) (Wilson 1972; Greeley et al. 2006).
KeywordsFlow Depth Sand Wave Current Ripple Boundary Shear Stress Subaqueous Dune
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