Global Water Budget Flashcards
(9 cards)
1
Q
What is the Global Water Budget
A
The amount of water available for human use for water to still be a renewable resource.
2
Q
Example of an Aquifer
A
Ogallala Aquifer - Largest aquifer in the USA
3
Q
Aquifer def
A
A water bearing rock
4
Q
Recharge rate def
A
The rate an aquifer is filled with water
5
Q
Fossil water def
A
Deep water with a residence time exceeding 1000 years
6
Q
Why is water only sometimes a renewable resource.
A
It will replenish itself via the water cycle but over extraction from stores with long residence times makes it non-renewable
7
Q
Water Budget Equation
A
Inputs = Outputs +/- Change in store
8
Q
Green Water
A
Water evaporated from soil or evapotranspired from plants.
9
Q
Blue Water
A
Water in the form of rivers, lakes and groundwater.
