Journal article
A mathematical model of saltation
Acta Mechanica, Vol.124(1-4), pp.199-211
1997
Abstract
This paper presents a model of the uplift by wind of heavy (i.e. saltating and unaffected by turbulent diffusion) soil particles. Detailed trajectories are not calculated, although trajectory heights are required and this necessitates taking account of the drag on particles. Quantities required as input are (a) the mass-concentration at a height equal to the roughness length above the surface for each size class, (b) the roughness length of the undisturbed surface, and (c) the friction velocity which is assumed to be controlled by the overlying wind and unaffected by erosion. The model is combined with a previously bublished model for lighter particles and applied to hypothetical size distributions for a range of friction velocities. Mean-diameter profiles and horizontal fluxes are obtained and found to agree well with observations by various workers.
Details
- Title
- A mathematical model of saltation
- Authors/Creators
- J.M. Hopwood (Author/Creator)W.D. Scott (Author/Creator)
- Publication Details
- Acta Mechanica, Vol.124(1-4), pp.199-211
- Publisher
- Springer Verlag
- Identifiers
- 991005540276307891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 8 Earth Sciences
- 8.205 Ocean Dynamics
- 8.205.2041 Wind Erosion
- Web Of Science research areas
- Mechanics
- ESI research areas
- Engineering