- sporadic permafrost
- The area near the southern boundary of discontinuous permafrost where permafrost occurs in isolated patches or islands.NRC
Glossary of landform and geologic terms. 2013.
sporadic permafrost
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sporadic permafrost — where mean annual temperature is just below 0˚ there may be isolated patches of frozen ground … Geography glossary
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 — Ground, soil, or rock that remains at or below 0 °C for at least two years. It is defined on the basis of temperature and is not necessarily frozen (i.e., cemented by ice). Compare: continuous permafrost, discontinuous permafrost, sporadic… … Glossary of landform and geologic terms
permafrost — frozen ground. Varies widely in scope and depth and in the period of the year for which it exists. A common feature of periglacial environments. See continuous permafrost, discontinuous permafrost and sporadic permafrost … Geography glossary
discontinuous permafrost — Permafrost occurring in some areas beneath the exposed land surface throughout a geographic region where other areas are free of permafrost. Compare: continuous permafrost, sporadic permafrost. NRC … Glossary of landform and geologic terms
continuous permafrost — Permafrost occurring everywhere beneath the exposed land surface throughout a geographic region. Compare: discontinuous permafrost, sporadic permafrost. NRC … Glossary of landform and geologic terms
Drunken trees — Not to be confused with the floss silk tree, also known as the drunken tree or palo borracho. A drunken forest in Siberia caused by melting permafrost. NASA photo. Drunken trees, tilted trees, or a drunken forest, is a stand of trees displaced… … Wikipedia
North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… … Universalium
cañada — /keuhn yah deuh, yad euh/, n. Chiefly Western U.S. 1. a dry riverbed. 2. a small, deep canyon. [1840 50; < Sp, equiv. to cañ(a) CANE + ada n. suffix] * * * Canada Introduction Canada Background: A land of vast distances and rich natural resources … Universalium
Canada — /kan euh deuh/, n. a nation in N North America: a member of the Commonwealth of Nations. 29,123,194; 3,690,410 sq. mi. (9,558,160 sq. km). Cap.: Ottawa. * * * Canada Introduction Canada Background: A land of vast distances and rich natural… … Universalium
