Ice crystals orientating in the same direction, causing the ice to slide along the surface. As this moves faster, crevasses will begin to form.
1 of 6
Rotational
Round movement which occurs as the corrie (highest sectoin of glacier) and can go beyond rock lip
2 of 6
Compressional
When a valley (which the glacier is flowing in) has a decline in gradient, this thickens the ice leading to a deceleration in the movement and an increase in erosion
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Extensional
When a valley (which the glacier is flowing in) has an increase in gradient, this thins the ice leading to an acceleration of ice movement and less erosion
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Basal sliding
When the base of a glacier melts a small amount, causing lubrication
5 of 6
Surge
An excessive build up of meltwater causing the ice to rapidly surge forward (perhaps by 250 yards), causing problems for settlements past the snout
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Other cards in this set
Card 2
Front
Round movement which occurs as the corrie (highest sectoin of glacier) and can go beyond rock lip
Back
Rotational
Card 3
Front
When a valley (which the glacier is flowing in) has a decline in gradient, this thickens the ice leading to a deceleration in the movement and an increase in erosion
Back
Card 4
Front
When a valley (which the glacier is flowing in) has an increase in gradient, this thins the ice leading to an acceleration of ice movement and less erosion
Back
Card 5
Front
When the base of a glacier melts a small amount, causing lubrication
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