Zusammenfassung der Ressource
Freshwater
- Water
- Salt water
- 97.5%
- Freshwater
- 2.5%
- Surface water
- 0.3%
- Polar regions
- 70%
- Ground water
- 29.7%
- Five spheres
- Lithosphere (groundwater)
- Atmosphere
- Biosphere (ecosystems)
- Cryosphere (frozen water)
- Hydrosphere (liquid water)
- Hydrological cycle
- Inputs
- Precipitation
- Outputs
- Transpiration
- Evaporation
- Evapotranspiration
- River flow/discharge
- Stores of water
- Vegetation storage
- Interception
- Surface storage
- Soil moisture storage
- Groundwater storage
- Channel storage
- Transfer
- Stemflow
- Stemfall
- Surface runoff
- Infiltration
- Throughflow
- Percolation
- Ground water
- Baseflow
- Eustatic change
- Always a global effect
- When the sea level changed due to an
alteration in the volume of water in
the oceans, or a change in the shape
of an ocean basin, therefore changing
the amount of water it is able to hold
- Isostatic change
- Result of increase or decrease in
height of land; sea level rises as land
height decreases, and sea level falls
as the height of the land increases
- Local sea level change
- Ice sheet
- Biggest ice sheet:
Antarctic ice sheet, hold
90% of Earth's freshwater
- A chunk of glacier ice that
covers the land
surrounding it and is
greater than 50,000 km
- Since they are found on
land, their melting does
contribute to the rise of
sea levels
- Ice shelf
- Floating extension of land ice
- Receive ice from:
- Flow of ice
from the
continents
- Surface accumulation
(snow fall)
- Freezing of marine ice to
their undersides
- Consequences of sea levels rising
- Erosion
- Flooding
- Contamination of aquifers
- Contamination of agriculture soils
- Loss of habitat for fish, birds and plants