Look up: permafrost

1. permafrost
   Perennially frozen ground that occurs wherever the temperature remains below 0 degrees C for several years.
   Found on http://cdiac.ornl.gov/glossary.html
   
   
2. Permafrost
   Soil, rock and sediment where the temperature stays below 0°C for at least two consecutive winters and the summer in between. Permafrost usually occurs in a layer some distance beneath the topsoil.
   Found on http://www.geologyrocks.co.uk/glossary/l
   
   
3. permafrost
   [n] - ground that is permanently frozen
   Found on http://www.webdictionary.co.uk/definitio
   
   
4. permafrost
   permanently frozen ground or rock Category: The cosmos • Permanently frozen ground that occurs wherever ground temperatures remain continuously below 0 C for two or more years. Category: Botany and zoology
   Found on http://www.mijnwoordenboek.nl/definition
   
   
5. Permafrost
   Layer of permanently frozen soil.
   Found on http://www.blackwellpublishing.com/Towns
   
   
6. permafrost
   noun ground that is permanently frozen
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
7. permafrost
   perennially frozen ground, a naturally occurring material with a temperature colder than 0° C (32° F) continuously for two or more years. Such a ... [12 related articles]
   Found on http://www.britannica.com/eb/a-z/p/46
   
   
8. Permafrost
   Layer of soil or rock, at some depth beneath the surface, in which the temperature has been continuously below 0
   Found on http://nsidc.org/arcticmet/glossary/perm
   
   
9. Permafrost
   Zone of permanently frozen water found in high latitude soils and sediments. Five types of permafrost have been recognized: continuous permafrost, discontinuous permafrost, sporadic permafrost, alpine permafrost, and subsea permafrost.
   Found on http://www.physicalgeography.net/physgeo
   
   
10. permafrost
    permafrost, permanently frozen soil, subsoil, or other deposit, characteristic of arctic and some subarctic regions; similar conditions are also found at very high altitudes in mountain ranges. In 1962 measurements in a borehole drilled on Melville Island, Northwest Territories, Canada, showed that ...
    Found on http://www.infoplease.com/ce6/sci/A08384
    
    
11. Permafrost
    Permafrost is the permanently frozen subsoil in Arctic regions.
    Found on http://www.probertencyclopaedia.com/brow
    
    
12. permafrost
    Click images to enlargeCondition in which a deep layer of soil does not thaw out during the summer. Permafrost occurs under periglacial conditions. It is claimed that 26% of the world's land surface is permafrost. Permafrost gives rise to a poorly drained form of grassland typical of northern Canada, Siberia, and ...
    Found on http://www.talktalk.co.uk/reference/ency
    
    
13. Permafrost
    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 present, as may be in the case of nonporous bedrock, but it frequently occurs and it may be in amounts exceeding the potential ...
    Found on http://en.wikipedia.org/wiki/Permafrost
    
    
14. Permafrost
    (album) Name = Permafrost | Type = Album | Artist = Thomas Köner | Released = 1993 | Genre = Ambient| Length = 37:45 | Label = Barooni | Producer = Thomas Köner | Reviews = *Allmusic (3.0/5.0) pure_url=yes--> Last album = Teimo <br /> (1992) | This album = Permafrost &l...
    Found on http://en.wikipedia.org/wiki/Permafrost
    
    
15. Permafrost
    (story) `"Permafrost"` is a science fiction novelette by American writer Roger Zelazny. It won the Hugo Award for Best Novelette in 1987, and was nominated for the Nebula Award. Plot summary: A strange confrontation between a frozen planet, a formerly-human program, and a has-been con-man. External links:
    Found on http://en.wikipedia.org/wiki/Permafrost