GLACIER MOVEMENT

Glaciers move once they accumulate enough mass to start moving. There are 2 main mechanisms for movement:

• Basal sliding

• Internal deformation

Glaciers move differently if they have a different temperature profile from the surface to the base.

There are several questions.

Need Nagle: "Cold Environments": EPICS series: pp. 17-22

1. What did James Forbes learn about glacier movement from his experiments in 1842 ?

2. What factors control the rate of movement of a glacier ?

3. How do glaciers move ?

4. What features form on or around a glacier as a result of its movement ?

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