Living reference work entry
Meter-scale longitudinal snow feature produced by strong winds.
A type of snow feature.
Sastrugi (Russian); variation, zastruga; synonym, skavler
Sastrugi are irregular, wavelike, or domical ridges or grooves (Doumani 1967), which align parallel with the prevailing wind direction (Fig. 1). Similar to other erosional features and unlike depositional features, their steep face is on the windward side (Daffern 2009) and may be overhanging, forming a snow cornice (Averianov 1969, p. 28). Sastrugi fields – e.g., ridges separated by grooves – can produce a terrain of extreme surface roughness (Benson 1971). Sets of sastrugi of different orientations can form a network of ridges (Warren et al. 1998).
KeywordsWind Direction Prevailing Wind Windward Side Extreme Surface Erosional Feature
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