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superimposed-ice zone

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surface melting of glaciers

  • Perito Moreno Glacier
    In glacier: Mass balance

    …permitting runoff; and in the superimposed-ice zone refrozen meltwater at the base of the snowpack (superimposed ice) forms a continuous layer that is exposed at the surface by the loss of overlying snow. These zones are all parts of the accumulation area, in which the mass balance is always positive.…

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