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Permafrost landscapes and change.docx

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Department
Geography
Course Code
GPHY 102
Professor
Prof.

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Permafrost landscapes and change  One of the central identity of Canada.  Defined as grond material that remains frozen for 2 ore more years  Alpine permafrost Below the ocean: sub­sea permafrpst—oil storage   Contineous permafrost  Forther north, gets thicker, colder temperature  Active layer: during the summer, gets thinner, not part of the permafrost, since can get  de frozen  Ice below ground Graval cant form permafrost  Blue line: January, coldest temp at the surface Geothermal heat is releasing from the core During summer, Below 0, is permafrost  less change of the temperature down deep of the ground  Ground ice: Seasonal pattern, water foesnt retyrn, get frozen when temp goes down Cryoturbation: during winter, Heave: because ice is bigger, summer defrozen, settle  down  Ice­cored mounds and hills  Soil surface get push up  Pingos and palsas are not per
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