What causes glaciers to move?

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Glaciers act like a system with accumulations and ablations.

Accumulations (inputs):

  • Snow - become compacted as more snow settles on top. Air is expelled and the individual snowflakes turn into granular ice crystals. The becomes denser and eventually turns into clear glacier ice.
  • Avalanches.

Ablations (outputs):

  • Melting - occurs near the snout of the glacier where the air temperature…


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