The New Encyclopædia Britannica in 30 Volumes: Macropædia : Knowledge in Depth. - 19 Bd, Volumes 1-19Encyclopædia Britannica, 1974 |
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Page 90
... permafrost 75 metres thick 300 metres thick unfrozen ground NW SE Figure 2 : Approximate distribution of permafrost in Alaska . Permafrost is widespread in the northern part of the Northern Hemisphere ( Figure 1 ) , and it is estimated ...
... permafrost 75 metres thick 300 metres thick unfrozen ground NW SE Figure 2 : Approximate distribution of permafrost in Alaska . Permafrost is widespread in the northern part of the Northern Hemisphere ( Figure 1 ) , and it is estimated ...
Page 91
... permafrost layer will become thicker each equilibrium with present climate at the sites of measurewinter , its thickness controlled by the thermal balance ment . Some areas show , for example , that ... permafrost in Fairbanks Permafrost 91.
... permafrost layer will become thicker each equilibrium with present climate at the sites of measurewinter , its thickness controlled by the thermal balance ment . Some areas show , for example , that ... permafrost in Fairbanks Permafrost 91.
Page 95
... permafrost . In the far north , however , little water is action and during the freezing operation causes loss of bearing available in the permafrost , deep drilling ( 1,000–2,000 ft man - made strength . The intensity of frost action ...
... permafrost . In the far north , however , little water is action and during the freezing operation causes loss of bearing available in the permafrost , deep drilling ( 1,000–2,000 ft man - made strength . The intensity of frost action ...
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