Ice Movement

HideShow resource information

Compressing flow:

  • Occurs when there is a reduction in the gradient of the valley floor.
  • This leads to the thickening of the ice mass .
  • Erosion is at its maximum.

Extending flow:

  • Occurs when there is an increase in the gradient of the valley floor.
  • The ice accelerates and becomes thinner.
  • This leads to less erosion.

Basal flow:

  • As the galcier moves over bedrock friction occurs.
  • The lower ice is under a great deal of pressure from the mass of the glacier, this combined with friction results in some melting.
  • The…

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Hot and cold environments resources »