A layer of permanently frozen subsoil, reaching depths up to 5,000 feet (1,524 meters). Permafrost is found throughout most of the polar regions. The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by...
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As the frozen ground warms much faster than expected, it’s reshaping the landscape—and releasing carbon gases that fuel global warming.
Also found in: Dictionary, Medical, Encyclopedia, Wikipedia. Graphic Thesaurus 🔍 Display ON Animation ON Legend Synonym Antonym Related </>embed</> groundsoillandpermafrost noun Words related to permafrost nounground that is permanently frozen Related Words land soil ground Based on WordNet...
The permafrost zone also exists under the thermal sink lakes that are common on the plains of the arctic and subarctic regions. In the high latitudes, the continuity of the zone is broken by open and closed taliks of various origin in which the temperature of the rock is above zero for ...
While it is not good for the environment, the change in the permafrost is good for scientists because extinct animals, very old, dead animals that haven’t been seen for tens of thousands of years, are being discovered. A couple of years ago, a 40,000-year-old wolf was found on a ri...
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2.Due, most likely, to the, uh, preservation in thepermafrost. 很可能是 永冻层起到了良好的冷冻保存作用 3.But the biggest consequence ofpermafrostmelting is found outside this town. 但是永冻层融化的最严重后果 在这座小镇之外 4.And if, as scientists fear, thepermafrostmelts, it releases inc...
(ice) content etc.,are analyzed.It is found that thicker humus and vegetation,fine grain soil,higher water content are the advantage for keeping lower temperature of permafrost.Contrasting to previous works in these area,it can be concluded that permafrost is degrading in the middle-east section...
Permafrost—soil that is frozen, although not necessarily permanently as it name implies—is found mostly in the Northern Hemisphere, where it covers about a quarter of exposed land and is generally thousands of years old. It covers a wide belt between the Arctic Circle and boreal forests, span...