The Drainage basin hydrological cycle

Created by: Iona Gordon
Created on: 11-01-13 14:54

Describe ways in how water reaches river channel

There are 3 routes: Rapid route = precipitation - channel flow. Moderate route = precipitation - interception - leaf drip - OLF - channel flow. Slow route = precipitation - interception - leaf drip - infiltration - percolation - GWF - TF - river

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What is the Drainage basin hydrological cycle

Area of land drained by river and tributaries. Looks at movement within a drainage basin. An OPEN SYSTEM as external inputs/outputs

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What are positive Feedback loops

occur when changes in outputs/inputs = knock on effect taking system away from equilibrium. E.g. rapid run-off = high channel flow = high channel run-off

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When do feedback loops occur

Occur when changes in inputs/outputs = DBHC unbalanced

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what are negetive feedback loops

they occur when changes in inputs/outputs are met with changes to redress the balance. E.g. high evaporation = condensation = precipitation

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what is the water budget

shows balance between inputs/outputs within a drainage basin. it tells us whether there is a surplessor deficit of moisture in drainage basin or if it is in equilibrium

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what is transpiration

is when water is drawn through the roots of vegetation to the stomata of leaves and then transpired into atmosphere when heating by solar radiation is suffucient

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what is evapotranspiration

combination of evaporation and transpiration. change in all water on plant sufaces from liquid to gas

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Other cards in this set

Card 2

Front

What is the Drainage basin hydrological cycle

Back

Area of land drained by river and tributaries. Looks at movement within a drainage basin. An OPEN SYSTEM as external inputs/outputs

Card 3

Front

What are positive Feedback loops

Back

Card 4

Front

When do feedback loops occur

Back

Card 5

Front

what are negetive feedback loops

Back

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The Drainage basin hydrological cycle