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23 July, 07:22

Which conditions at the base of a glacier increase glacial flow velocity? Select all that apply. O steeper slope decreased ice thickness colder basal water temperature smooth rock/glacier contact

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  1. 23 July, 07:47
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    Conditions at the base of a glacier increase glacial flow velocity -

    Steeper slope

    Smooth rock / glacier contact

    Colder basal water temperature.

    Explanation:

    Steeper slope and smooth rock/glacier contact will increase glacial flow velocity because higher the steepness higher the velocity and smoothness will apply less friction.

    Due to decrease in ice thickness the load at the bottom of the glacier will decrease, and we know that the glacier flows under the load of itself, so lesser the load lesser the velocity.

    Colder basal water temperature will generate less amount of melt as compared to warmer basal water temperature, so in colder condition, glacial flow velocity will not be increased.
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