water balance of a lichen tundra underlain by permafrost
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water balance of a lichen tundra underlain by permafrost

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Published by Centre for Northern Studies and Research, McGill University in Quebec .
Written in English


  • Soils -- Effect of temperature on.,
  • Frozen ground.,
  • Tundras.,
  • Lichens.

Book details:

Edition Notes

SeriesMcGill sub-arctic research papers -- no. 33, Climatological research series -- no. 13
ContributionsMcGill Subarctic Research Station.
The Physical Object
Pagination110 p. :
Number of Pages110
ID Numbers
Open LibraryOL13545856M

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Permafrost forms and exists in a climate where the mean annual air temperature is 0 °C or colder. Such a climate is generally characterized by long, cold winters with little snow and short, relatively dry, cool summers. Permafrost, therefore, is widespread in the Arctic, sub-Arctic, and Antarctica. It is estimated to underlie 20 percent of the. Lichens are hardy organisms that can live in some of the harshest conditions found on Earth. They are not one plant, but rather, a symbiotic combination of two -- an algae and a fungus. Lichens are an important part of the ecosystem of the Arctic tundra, where the cold, dry climate is a challenge to the survival of most plants and animals. Without a spoiler, suffice it to say there there is some derring-do and excitement as Tom seeks to find his missing friend and to melt what he sees a his permafrost. I loved this book and can't wait to read the next novel with Tom, who is sure to develop into a detective that readers will follow for years.4/5(9). A detailed study of the water balance of a lichen-heath tundra underlain by permafrost was begun in September near Schefferville, Quebec. The study was centred on a ha hillside and an.

Noun ()Permanently frozen ground, or a specific layer thereof. * , Johannes C. Nonner, Introduction to Hydrogeology, ISBN , page , Nevertheless, the water molecule is present, as ice, in a solid form in frozen soils or permafrosts, which cover large regions characterised by a polar climate. The ground above the permafrost that thaws in summer and refreezes in winter is known as the active layer. Its thickness, like that of the underlying permafrost, depends on the many factors that influence the flow of heat into and out from the Earth's sur­ face. The upper surface of the permafrost layerFile Size: 4MB. Permafrost is found in places where the average annual temperature is below about 23°F (- 5° C), including most of the Arctic and all of Antarctica. Land with underlying permafrost is called tundra. The arctic tundra is stark and treeless. Roots can’t penetrate the frozen soil, so only moss, lichen, and low shrubs can grow there. However, thaw subsidence is difficult to observe in permafrost-underlain tundra landscapes, as there are often no absolute reference frames to compare to the subtle, widespread topographic change.

This is permafrost melting due to global warming but this site isn't about that so well stick to permafrost. This is typical now a days and the more it melts the higher the water is going to get. this permafrost could have been a mile high and now its a few feet off the ground.   Permafrost is any soil or rock that remains frozen (below 32 F) throughout the year. For a soil to be considered permafrost, it must be frozen for at least two consecutive years or longer. Permafrost can be found in cold climates where the mean annual temperature is Author: Laura Klappenbach. The plants of the tundra and the permafrost underneath are in balance. Plants growing on the surface absorb solar energy, protecting the permafrost and preventing it from thawing. The permafrost keeps melted water near the surface, where plants need it. However, this balance is fragile. If the plant cover is damaged, the permafrost can thaw. See essays related to permafrost in the Arctic Report Card - Note: In , the Arctic Report Card got a new look that included Permafrost as an Indicator which will be reported every years. Therefore this link goes to the table showing Report Card topics by year, which links to the individual essays. Permafrost is permanently frozen ground.