Abstract
This article briefly reviews recent studies on the movements of snow particles and its deposition in snow storm.Movements of snow particles by wind force can be classified as follwing three modes : creep, saltation and suspension. Creep involves the iniciation of snow particle movement. Saltation is an important movement in snow storm, and this is considered to be the major mechanism for mass transport. Suspension is analyzed by turbulent diffusion theory, and this shows an important mechanism of mass transport in windy and coldy environments.Saturated transport rate of snow drift is also an important concept to discuss for snow redistribution on the surface. In this paper some snow surface features were classified according to deposition/erosion patterns : sastrugi and pits are formed when erosion is dominant, whereas ripples, dunes, barchans and waves are formed when deposition is dominant. Another classification divides snow surface reliefs into transverse pattern (ripples, waves, barchans) and longitudinal pattern (dunes, sastrugi, pits). In general, the former are formed by light winds, whereas the latter are formed by strong winds.
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