Sharp irregular grooves or ridges formed on a snow surface
Wind sculpted snow near South Pole Station, forming sastrugi features.
Sastrugi, or zastrugi, are features formed by erosion of snow by wind.
They are found in polar regions, and in snowy, wind-swept areas of temperate regions, such as frozen lakes or mountain ridges.[1]
Sastrugi are distinguished by upwind-facing points, resembling anvils, which move downwind as the surface erodes.[2]
These points usually lie along ridges parallel to the prevailing wind;[3] they are steep on the windward side and sloping to the leeward side.[4] Smaller irregularities of this type are known as ripples (small, ~10 mm high) or wind ridges.
Large sastrugi are troublesome to skiers and snowboarders. Traveling on the irregular surface of sastrugi can be very tiring, and can risk breaking equipment—ripples and waves are often undercut and the surface is hard and unforgiving, with constant minor topographic changes between ridge and trough.
^Kochanski, K.; Anderson, R.S.; Tucker, G. (Jun 2018). "Statistical classification of self-organized snow surfaces". Geophysical Research Letters. 45 (13): 6532–6541. Bibcode:2018GeoRL..45.6532K. doi:10.1029/2018GL077616. OSTI 1539740.
^Kochanski, K.; Anderson, R.S.; Tucker, G. (2019). "The evolution of snow bedforms in the Colorado Front Range". The Cryosphere. 13: 1267–1281. doi:10.5194/tc-13-1267-2019.
^Leonard, K. C.; Tremblay, B. (Dec 2006). "Depositional origin of snow sastrugi". AGU Fall Meeting Abstracts. 2006: C21C–1170. Bibcode:2006AGUFM.C21C1170L. #C21C-1170.
^Cite error: The named reference talman was invoked but never defined (see the help page).
Sastrugi, or zastrugi, are features formed by erosion of snow by wind. They are found in polar regions, and in snowy, wind-swept areas of temperate regions...
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