glacial movement and temperature

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  • Created by: Ali Bland
  • Created on: 16-03-15 21:08
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  • Glacial movement & temperature
    • Pressure melting point (PMP)
      • The temperature at which ice is on the verge of melting
      • A small increase n pressure can cause melting
      • PMP is normally 0°C at the surface of a glacier
    • Warm & cold ice
      • Warm ice has a temperature of around 0°C (PMP) throughout its depth
      • Temperatures in cold ice and permanently below 0°C (PMP) & so there is virtually no melting
      • Glaciers with mainly warm ice are called temperate
      • Glaciers with cold ice are called polar
        • Because meltwater helps glaciers to move, movements much faster in temperate glaciers then polar
          • Glaciers with mainly warm ice are called temperate


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