Ridges of hard snow alternating with wind-eroded furrows parallel to the wind direction, with typical lengths of metres and heights less than a metre. The word is the plural of Russian 'zastruga', and
alludes to the result of planing a wooden surface with a jackplane.
(from Russian, plural form of 'zastruga'; variant spelling sastrugi) Ridges of hard snow alternating with wind-blown furrows running parallel with the direction of the wind. This surface formation res
ults from the erosion of transverse waves previously formed. Zastrugi may be up to several meters long and up to several tens of centimetres high.