unfrozen ground between the permafrost

См. также в других словарях:

• 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

• Climate of the Arctic — The climate of the Arctic is characterized by long, cold winters and short, cool summers. There is a large amount of variability in climate across the Arctic, but all regions experience extremes of solar radiation in both summer and winter. Some… …   Wikipedia

• Talik — For the Israeli general named Talik, see Israel Tal. A talik (from the Russian Language talik, derived from the verb tait, to melt) is a layer of year round unfrozen ground that lies in permafrost areas. In regions of continuous permafrost,… …   Wikipedia

• 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

• Cryosphere — Overview of the Cryosphere and its larger components, from the UN Environment Programme Global Outlook for Ice and Snow. The cryosphere (from the Greek κρύος cryos cold , frost or ice ) is the term which collectively describes the portions of the …   Wikipedia

• Geology of Mars — Mars   Mars as seen by the Hubble Space Telescope Designations …   Wikipedia

• Palsa — (Plural: Palsas, also Palsen, from Finnish palsa , which in turn is a borrowing from Northern Sami balsa ), designates a low oval elevation in areas with Permafrost, frequently peat bogs, where a perennial ice lens has developed within the soil.… …   Wikipedia

• Hummock — A hummock (of uncertain derivation; cf. hump or hillock) is a boss or rounded knoll of ice rising above the general level of an ice field, making sledge travelling in the Arctic and Antarctic region extremely difficult and unpleasant.Hummocky ice …   Wikipedia

• Water resources — A natural wetland Water resources are sources of water that are useful or potentially useful. Uses of water include agricultural, industrial …   Wikipedia

• Polar bear — This article is about the animal. For other uses, see Polar bear (disambiguation) …   Wikipedia