A mathematical model of saltation

Jenny Hopwood, W.D. Scott

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Web of Science)


    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 published 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.
    Original languageEnglish
    Pages (from-to)1-4
    JournalActa Mechanica
    Publication statusPublished - 1997


    Dive into the research topics of 'A mathematical model of saltation'. Together they form a unique fingerprint.

    Cite this