Bed form initiation from a flat sand bed

  title={Bed form initiation from a flat sand bed},
  author={Jeremy G Venditti and Michael A. Church and Sean J. Bennett and Felix M. Exner},
[1] Bed form initiation in unidirectional flow is examined on a flat bed composed of a homogeneous 0.5 mm sand. Velocity profiles taken prior to bed form development indicate that the examined flows are typical of fully turbulent, uniform, open channel flows. Under these conditions, two separate modes of bed form initiation are observed: defect and instantaneous initiation. Defect initiation occurs at lower flow stages, where sediment transport is sporadic and patchy, and is characterized by… CONTINUE READING


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