EESA07H3 Lecture 6: Lecture 6

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Lecture 6: glaciers and water issues in the gta. Ice at bottom of glaciers creates plasticity and it starts to move and glacier is born. Factors that control glacier"s movements: volume, smaller glaciers move faster, slope- steeper slope moves++ faster, amount of water- if have water at base of glacier will move faster, high temperature (above 0)- move faster, friction. Sea ice: covers 2/3 of earth"s surface www. notesolution. com. Glacier formation: striations, layers, u-shaped valleys, because of erosions, caused a u shaped valley, people build homes in those valleys, they are vulnerable to landslides, stream erosions produce v shaped valleys. Glaciers troughs: mountain/sea combinations, find mountains along sea coast, they are partially submerged by water bodies, only fjords have that. Moraines: deposits of till that have form different from underlying bedrock, tills different from underline bedrock, because till from different depositions from different places, end moraines. Kames: moundlike hills of layered sand and gravel.

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