GEOG 1400 Lecture Notes - Lecture 35: Solifluction, Thermokarst, Patterned Ground
Document Summary
Geog 1400 jan. 14th: arctic environments, periglacial environments. Freezing also exerts strong influence on the soil. Its actually a large area that is covered. About 20% of the continental area of the world. If you go down a meter or two, you will reach ice (the beginning (image) of permafrost). Polygons at the surface, these features are unique to the region: permafrost. Top layer may be melting, but underneath there is permafrost and it goes way down. Found in two different zones, the tundra and the boreal forest. Boreal forest refers to subarctic, lower than the tundra and also the vegetation is different. As you go down you get to discontinuous, there are areas that aren"t frozen, like beneath rivers and lakes because there are patches of discontinuous and usually heat. Alaska is in the continuous zone, you can see tiny vegetation (the tundra region).
