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Small-Scale Sand Forms. Transverse Ripples and Ridges

  • R. A. Bagnold

Abstract

THOUGH the cross-section of a rippled sand surface often assumes an outline which closely resembles both the actual cross-section of a disturbed water-air surface, and also the graph on a time basis of any kind of simple vibration, the resemblance is in appearance only. For the essence of a true wave is in the propagation of energy, either through the body of a material as in the case of sound, or along its surface as with a surface water wave. In a sand ripple or wave there is no such propagation of energy. A sand ripple is merely a crumpling or heaping up of the surface, brought about by wind action, and cannot be regarded as a true wave in a strict dynamical sense. The similarity lies only in the regular repetition of surface form.

Keywords

Sand Sheet Windward Slope Wind Strength Sand Ripple Threshold Wind 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Bagnold, R. A. (1937). Geogr. F., 89, p. 428Google Scholar
  2. Cornish, V. (1914). Waves of Sand and Snow. (T. Fisher Unwin) and numerous previous papersGoogle Scholar

Copyright information

© Chapman and Hall Ltd 1973

Authors and Affiliations

  • R. A. Bagnold

There are no affiliations available

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