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Needle ice is a phenomenon that occurs when the temperature of the soil is above 0°C and the surface temperature of the soil is below 0°C. The subterranean moisture is brought to the surface via capillary action.
Additional recommended knowledge
Alternate names for needle ice are "frost column", "kammeis" (the German term), or "pipkrake" (from Swedish pipa (tube) and krake (weak, fine), coined in 1907 by Henrik Hesselman (1874 – 1943)).
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Needle_ice". A list of authors is available in Wikipedia.|