Lecture 15: Ice 2

Question 1

What is a grounding line?

Answer 1

A grounding line is the boundary where a floating ice shelf meets the grounded ice sheet or glacier. It marks the point where the ice transitions from being supported by the bedrock (on land) to floating on the ocean.

Question 2

What is ice shear?

Answer 2

Definition:
Ice shear refers to the deformation of ice due to shearing forces that cause layers of ice to slide past one another.

Cause:
It occurs when the ice experiences differential movement, typically along the base of a glacier or ice shelf, where different parts of the ice move at different speeds.

Impact:
Ice shear contributes to the overall movement of glaciers and ice sheets and plays a role in ice flow dynamics. It can also influence the structural integrity of ice shelves and glaciers.

Question 3

Slide 16 ice shear patterns, know the patterns and respective strengthes

Answer 3

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Question 4

Can ice be considered as metamorphic?

Answer 4

Yes