1) Arctic drilling challenge 2) Arctic geography terminology 3) Arctic soil phenomenon 4) Ground 5) Land 6) Short story by Roger Zelazny 7) Soil
Found on
https://www.crosswordclues.com/clue/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. ...
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http://en.wikipedia.org/wiki/Permafrost_(story)
Layer of soil or rock, at some depth beneath the surface, in which the temperature has been continuously below 0
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http://nsidc.org/arcticmet/glossary/permafrost.html
Ground permanently frozen except for the surface soils that thaw when temperatures rise above freezing. Thawing and refreezing cause instability of the soil, which greatly complicates the construction and maintenance of roads, railroads, and buildings. Permafrost covers roughly the northern one-third of the Soviet landmass.
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http://soviethistory.msu.edu/glossary/
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]
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http://www.britannica.com/eb/a-z/p/46
Permanently frozen ground, typical of the treeless plains of Siberia (tundra), though common through arctic, sub-arctic, and antarctic regions on Earth to a depth of as much as 600 meters. Permafrost also exists in the upper part of the crust on Mars.
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http://www.daviddarling.info/encyclopedia/P/permafrost.html
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.
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http://www.encyclo.co.uk/local/20206
A soil layer below the surface of tundra regions that remains frozen permanently.
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http://www.encyclo.co.uk/local/22268
Permanently frozen regolith, ranging in thickness from 30 centimeters to over 1000 meters.
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http://www.encyclo.co.uk/local/22291
Permanently frozen ground.
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http://www.evcforum.net/WebPages/Glossary_Geology.html
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.
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http://www.physicalgeography.net/physgeoglos/p.html
Permafrost is the permanently frozen subsoil in Arctic regions.
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http://www.probertencyclopaedia.com/browse/AP.HTM
A layer of earth that is permanently frozen even though the overlaying layers may thaw.
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http://www.quick-facts.co.uk/earth/glossary.html
A soil layer below the surface of tundra regions that remains frozen permanently.
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http://www.timeanddate.com/weather/glossary.html
[
n] - ground that is permanently frozen
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http://www.webdictionary.co.uk/definition.php?query=permafrost
Ground permanently frozen except for the surface soils that thaw when temperatures rise above freezing. Thawing and refreezing cause instability of the soil, which greatly complicates the construction and maintenance of roads, railroads, and buildings. Permafrost covers roughly the northern one-third of the Soviet landmass.
Found on
https://irp.fas.org/world/russia/su_glos.html
layer of soil or rock, at some depth beneath the surface, in which the temperature has been continuously below 0°C for at least several years; it exists where summer heating fails to reach the base of the layer of frozen ground.
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https://nsidc.org/cryosphere/glossary?page=18
the permanently frozen subsoil ground layer found in arctic and subarctic regions
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https://sciencetrek.org/sciencetrek/topics/climate/glossary.cfm
Perennially frozen ground that occurs wherever the temperature remains below 0 degrees C for several years.
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https://www.encyclo.co.uk/local/20128
noun ground that is permanently frozen
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https://www.encyclo.co.uk/local/20974
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 ...
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https://www.encyclo.co.uk/local/21221
Soil conditions prevailing in area whose mean annual temperature is 0o C.
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https://www.encyclo.co.uk/local/22327
Permanently frozen ground in polar regions. It forms in regions close to, but not under, ice caps, ice fields and glaciers. The frozen conditions may be several tens of metres thick, but the top layer may thaw in the summer months before freezing again in the winter. During the last Ice Age, much of southern Britain was affected by permafrost.
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https://www.encyclo.co.uk/local/23001
Ground that remains at or below freezing for at least two consecutive years.
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https://www.globalchange.gov/climate-change/glossary
Permanently frozen condition of soil except for surface soils that thaw when air temperatures rise above freezing. Thawing and refreezing cause instability of the soil, which greatly complicates the construction and maintenance of roads, railroads, and buildings. Permafrost covers roughly the northern one-third of the Russian Federation.
Found on
https://www.photius.com/countries/russia/glossary/index.html
No exact match found.
