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The origin of water feeding icings on the eastern North Slope of Alaska

Published online by Cambridge University Press:  27 October 2009

Dorothy K. Hall  and
Charles Roswell
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Extract

Stream icings are a unique type of river ice that form in a portion of a stream channel which freezes deeply enough to restrict channel flow. Icings are usually found in Arctic and sub- Arctic regions because of the prevalence of permafrost and seasonally frozen ground in these regions. Hydraulic pressure builds up at the point of constriction as the river ice and permafrost thicken during the freeze-up period (Fig 1). Water is forced up through cracks in the river ice and freezes upon exposure to the cold air. This process continues in successive overflows until the source of water is exhausted.

Type
Articles
Information
Polar Record , Volume 20 , Issue 128 , May 1981 , pp. 433 - 438
Copyright
Copyright © Cambridge University Press 1981

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