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dc.contributorUniversity of Melbourne.-
dc.contributor.authorRadok, Uwe.-
dc.descriptionResearch Report-
dc.descriptionAbstract: The theories of uniform and non-uniform drifting snow are summarized with special emphasis on drift transport as a function of wind velocity. Using the work of Owen (1964) and the observations of the Byrd Station Snow Drift Project (Budd, Dingle and Radok, 1966) it is confirmed that the snow drift process involves a mobile surface layer of saltating particles, with a self-regulating thickness depending only on the surface stress and not on the snow concentration in the free airstream. It is shown to be a characteristic of snow (in contrast to sand or silt) that saltation and suspension drift occur side by side and that the latter reaches predominance as the wind velocity rises through the most common range of surface values. Theoretical reasons and observational evidence are produced for the view that deposition or erosion occurs on the snow surface during snow drift primarily as the result of mass flux convergence or divergence in the free air stream. This implies that the associated vertical mass flux penetrates the saltation layer which moves up or down with the snow surface. The survey concludes with suggestions for the experimental study of snow deposition and erosion in terms of the free air flow field and for a study of pneumatic particle transport in terms of saltation and of its electrical effects.-
dc.publisherCold Regions Research and Engineering Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesResearch report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 230.-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource-
dc.subjectDrifting snow-
dc.subjectSnow surface-
dc.subjectSnow deposition-
dc.subjectSnow erosion-
dc.subjectBlowing snow-
dc.subjectWind factors-
dc.subjectMass flow-
dc.titleDeposition and erosion of snow by the wind-
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