snow

snow core

a sample of snow, either just the freshly fallen snow or the combined old and new snow on the ground, obtained by pushing a cylinder down through the snow layer and extracting it.
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snow bridge

an arch formed by snow which has drifted aross a crevasse, forming first a cornice, and ultimately a covering which may completely obscure the opening.
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snow board

a specially constructed board used to identify the surface of snow that has been recently covered by snowfall.
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snow barchan

horseshoe-shaped snowdrift, with the ends pointing down-wind.
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snow

(1) an ice particle formed by sublimation of vapor in the atmosphere (2) a collection of loosely bonded ice crystals deposited from the atmosphere; high density snow (greater than 550 kilograms per cubic meter; 34 pounds per cubic foot) is called firn if it is older than one year.
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slush zone

common near the snow line on a relatively flat portion of a glacier where melting snow forms slush.
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slush

a mixture of snow and grease ice.

seasonal snow

(1) snow that accumulates during one season (2) snow that lasts for only one season.
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sastrugi

complex, fragile shapes of snow on top of sea ice that resemble sand dunes; they form parallel to the prevailing wind direction; sastrugi can also form on snow cover over land.
Sastrugi at South Pole Station, Antarctica. (Photo courtesy of Fred Walton, NOAA Corps Collection.)
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ripple marks

corrugation on a snow surface caused by wind (as on sand).
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