Cryosphere Flashcards
1
Q
What does the cryosphere consist of?
A
Major ice sheets, valley glaciers, perma frost and sea ice
2
Q
Ice domes
A
Broad and high
3
Q
Ice divides
A
Ice dispersal centres, can be domes or ridges
4
Q
Outlet glaciers and icestreams…
A
…are responsible for the majority of ice discharge from icesheets
5
Q
Ice tongues
A
are extensions of marine-terminating glaciers
6
Q
Cryosphere are important for
A
- Tourism
- Global energy balance
- Water resource
- Global sea level
- Albedo
7
Q
Albedo effect of snow and Ice
A
- Snow has a 80% albedo
- Ice has a 40% albedo
8
Q
Water level
A
- Greenland holds enough water to raise sea levels by 7m
- Anatarctica has enough to raise sea levels by 60m
9
Q
how far back do Anatartica’s ice core record go?
A
800,000 years
