- cold permafrost
- Remains below 30° F, and which may be as low as 10° F as on the North Slope; tolerates introduction of considerable heat without thawing.
Pipeline dictionary. 2013.
Look at other dictionaries:
permafrost — /perr meuh frawst , frost /, n. (in arctic or subarctic regions) perennially frozen subsoil. Also called pergelisol. [1943; PERMA(NENT) + FROST] * * * Perennially frozen earth, with a temperature below 32 °F (0 °C) continuously for two years or… … Universalium
permafrost — вечная мерзлота. Any rock or soil material that has remained below 32°F continuously for two or more years. cold permafrost ice rich permafrost thaw stable permafrost thaw unstable permafrost warm permafrost … Pipeline dictionary
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Permafrost — This article is about frozen ground. For other uses, see Permafrost (disambiguation). In geology, permafrost, cryotic soil or permafrost soil is soil at or below the freezing point of water (0 °C or 32 °F) for two or more years. Ice is not always … Wikipedia
permafrost — per|ma|frost [ˈpə:məfrɔst US ˈpə:rməfro:st] n [U] [Date: 1900 2000; Origin: permanent + frost] a layer of soil that is always frozen in countries where it is very cold … Dictionary of contemporary English
permafrost — noun (U) a layer of soil, in very cold countries, that is always frozen … Longman dictionary of contemporary English
International Permafrost Association — The International Permafrost Association (IPA), founded in 1983, has as its objectives to foster the dissemination of knowledge concerning permafrost and to promote cooperation among persons and national or international organisations engaged in… … Wikipedia
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boreal forest — ▪ northern forest Introduction also called taiga vegetation composed primarily of cone bearing, needle leaved, or scale leaved evergreen trees, found in regions that have long winters and moderate to high annual precipitation. The… … Universalium