Sastrugi (1)
Sastrugi at South Pole Station, Antarctica. Sastrugi, or wind sculpted snow, are ridges formed when wind erodes and drifts the snow.
(Source: NOAA/Department of Commerce. Courtesy of Mr. Fred Walton, NOAA Corps Collection and the National Snow and Ice Data Center, Boulder, U.S.A.)
Sastrugi (2)
Sastrugi at South Pole Station, Antarctica. Sastrugi, or wind sculpted snow, are ridges formed when wind erodes and drifts the snow.
(Source: NOAA/Department of Commerce. Courtesy of Mr. Fred Walton, NOAA Corps Collection and the National Snow and Ice Data Center, Boulder, U.S.A.)
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Mega Dunes
Extensive snow dunes wrinkle the surface of large parts of East and West Antarctica. The dunes are up to 100 kilometers long and separated by 2 to 4 kilometers, but the height is only a few meters. The dunes are unique in that they appear not to be formed by normal wind depositon, but rather by ablation due to wave patterns set up in katabatic winds.
Picture courtesy of the National Snow and Ice Data Center, Boulder, U.S.A.
Plowing Snow
Heavy winds and blowing snow wreak havoc on traffic and roads. A truck with a snow plow attachment clears a road in this photograph from November 10, 1998.
Courtesy of the National Renewable Energy Laboratory and the Department of Energy and the National Snow and Ice Data Center, Boulder, U.S.A.
Photograph by David Parsons.
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