Features Of The Water Cycle In The Arctic Tundra Flashcards
1
Q
Precipitation
A
Low annual precipitation (less than 100mm in most places)
2
Q
Evaporation
A
Low rates. Much of the sun’s energy in summer is expended by melting snow so ground temp. Remains low and surface and soil water remain frozen for most of the yr.
3
Q
Moisture stores in the atmosphere.
A
Few owing to low temp. which reduces absolute humidity
4
Q
Ground water and soil moisture
A
Limited. Permafrost acts as a barrier for percolation, recharge and ground water flow
5
Q
Wetlands, ponds and lakes
How many lakes are in alaska?
Example of wetland in a valley
A
Extensive during summer. A temporary store of liquid water because permafrost impedes drainage.
Over 3 million
Yukon river
