For animations of features go to THIS SITE: (Arctic Wildlife Refuge)
For notes suitable for A level students, there are some excellent (if lengthy to load) Power Point presentations courtesy of WEST HOUGHTON School in Bolton.
Has animations showing the formation of
ICE WEDGES & STONE POLYGONS & PINGOS
For details on features found in FROZEN GROUND, go here. Has some more excellent animations.
This CANADIAN SITE is beyond the scope of A2, but has some very useful details of the formation of Pingos in the Mackenzie Delta area: one of the named types of pingos. Look also for details on the Tuktoyaktuk peninsula.
The TRANSALASKAN PIPELINE has to cope with the permafrost conditions. This is a very good site, and some questions will follow on a separate lesson plan. The pipeline had to be built in a fragile environment in extreme weather conditions and over an area of permafrost. The problems of insulating the heated pipeline had to be overcome, as well as several other physical challenges.
One of the factors which affects the build up of snow and ice is ASPECT: the direction a slope faces. This results in asymmetrical valley cross profiles e.g Watlowes valley above Malham Cove. Below is another example of a limestone dry valley:
This picture, taken by Mister P one winter morning shows the effect of aspect. Guess which side of this Derbyshire dale is facing South, and which is facing North ?
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