Permafrost

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  • Created by: 104608
  • Created on: 08-05-16 12:16
Permafrost
Permanently frozen ground
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3 types of permafrost
Continuous, discontinuous, sporadic
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Active layer
Formed when surface layer thaws and is above the permafrost
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Continuous permafrost
Found in coldest regions with little thawing
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Discontinuous permafrost
There are breaks in the permafrost around rivers, sea and lakes
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Sporadic permafrost
Permafrost only in isolated spots
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Frost heave
smaller sediment around larger stones below the surface freezes. Some stones heat up and cold won faster than other material. Soil beneath the stones freezes and pushes up the stones till they reach the surface
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Other cards in this set

Card 2

Front

Continuous, discontinuous, sporadic

Back

3 types of permafrost

Card 3

Front

Formed when surface layer thaws and is above the permafrost

Back

Preview of the back of card 3

Card 4

Front

Found in coldest regions with little thawing

Back

Preview of the back of card 4

Card 5

Front

There are breaks in the permafrost around rivers, sea and lakes

Back

Preview of the back of card 5
View more cards

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