DEPOSITION AND EROSION OF SNOW BY THE WIND.

The theories of uniform and non-uniform drifting snow are summarized with special emphasis on drift transport as a function of wind velocity. 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 sur...

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Bibliographic Details
Main Author: Radok,Uwe
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1968
Subjects:
Snow
Ice and Permafrost
(*SNOW
MASS TRANSFER)
TWO PHASE FLOW
WIND
DYNAMICS
DEPOSITION
EROSION
ANTARCTIC REGIONS
TEST METHODS
FLOW FIELDS
PARTICLE SIZE
VELOCITY
THICKNESS
SURFACE PROPERTIES
EQUATIONS OF MOTION
MATHEMATICAL MODELS
SALTATION
Antarctic
Antarc*
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0680179
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0680179
Description
Summary:The theories of uniform and non-uniform drifting snow are summarized with special emphasis on drift transport as a function of wind velocity. 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 air stream. 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. (Author)

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