Terrestrial Water Flashcards
Name 4 classes of terrestrial water ?
Surface water
Ground water
Soil wail
Biological water
Surface water
Free flowing water of rivers / ponds / lakes
what do rivers act as ?
Store and transfer of water.
Transfer water from ground , soils and atmosphere to a store - ocean.
How much water do rivers make up ?
0.0002%
Cover 1 million km2
What is the largest river by discharge ?
Amazon
209,000 m3/s
Accounts for 1/5th of worlds total river flow.
Lakes
Collection of fresh water found in hollows on land surface.
Greater than 2ha ( smaller pond )
Lake location
Northern hemisphere at higher latitudes
Canada has 31,752 lakes larger than 3km2
Largest lake
Caspian Sea 78,200 km2
Generally fresh water but becomes more saline in south where there are few rivers flowing into it
Deepest Kate
Siberia
Mean depth 749m
Wetlands
Area of marsh / peatland
Natural or artificial
Permanent or temporary
Location wetlands
Every continent - not Antarctica.
Even polar legions
Artic wetlands
Cover 60% of total SA
Store lots of greenhouse gases
Diverse in biodiversity
Ground water
Collects underground in pore spaces of rock
Amount of ground water is reducing rapidly due to extensive extractions for irrigation
Where does groundwater film?
Soil pore and spaces and causes soil to become saturated with water - water table
It’s then recharged and flows to surface
Soil water
Found in unsaturated upper weathered layers of the Earth - held together with air.
Affects runoff potential / flood control and soil erosion