One. Wind and Sand
Published Online: 27 MAR 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Dunes: Dynamics, Morphology, History
How to Cite
Warren, A. (2013) Wind and Sand, in Dunes: Dynamics, Morphology, History, John Wiley & Sons, Oxford. doi: 10.1002/9781118295786.ch1
- Published Online: 27 MAR 2013
- Published Print: 20 MAY 2013
Print ISBN: 9781444339697
Online ISBN: 9781118295786
- grain size;
- sedimentary particles;
- transport rate;
This chapter is about the lifting and carrying of sand by the wind. As to winds at this scale, only their velocity and small-scale patterns of turbulence are relevant. As to sand, the primary interest here is in its grain size (shape in a secondary concern). In the most widely accepted taxonomy for the size of sedimentary particles, grains of ‘sand’ have diameters of between 0.625 mm and 2 mm. A global survey, by its own admission limited, but probably representative, found that most dune sands were in Wentworth's ‘fine sand’ category (0.10–0.40 mm). Once raised, particles travel in four ways, which, in order of increasing velocity, are creep, reptation, saltation and suspension.