Factors driving change in magnitude of water (DRAINAGE BASIN)

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  • Created by: issyfra00
  • Created on: 21-04-17 11:55
What is a drainage basin?
Surrounding catchment where a river collects water, the highest point/boundary is called the WATERSHED (ridge of high land)
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3 examples of how water is lost in the drainage basin?
surface run-off | channel flow | percolation (ground water flow) | evaporation
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What is a rivers regime?
Where a rivers discharge level falls and rises (variability of discharge is in response to precipitation, basin charactaristics etc) showing its ANNUAL PATTERN
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What is throughfall and stemflow?
throughfall - increased lag time as water is intercepted by vegetation before reaching ground. stemflow - water flows down trunks/stem increasing time for water to reach ground.
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What is percolation?
Water moves vertically down through unsaturated rock via percolation - when it hits saturated rock it moves horizontally called GROUND WATER FLOW
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What is water balance?
balance between inputs (eg.precipitation) and outputs (eg.evaporation)
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What is the equation for water balance?
P = Q + E +/- S (precipitation = discharge + evaporation +/- change in stores)
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Other cards in this set

Card 2

Front

3 examples of how water is lost in the drainage basin?

Back

surface run-off | channel flow | percolation (ground water flow) | evaporation

Card 3

Front

What is a rivers regime?

Back

Preview of the front of card 3

Card 4

Front

What is throughfall and stemflow?

Back

Preview of the front of card 4

Card 5

Front

What is percolation?

Back

Preview of the front of card 5
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