Operation Of Global Hydrological Cycle Flashcards
Systems approach
Systems approach study hydrological phenomena by looking at the balance of inputs and outputs, and how Water is moved between stores by flows
Stores
Reservoirs where water is held, such as the oceans
Fluxes
The rate of flow between stores
Processes
The physical mechanisms that drive the fluxes of Water between stores
Cryosphere
Areas of the earth where water is frozen into snow or ice
Blue water
Water is stored in rivers, streams, lakes and groundwater in liquid form (visible part of the hydrological cycle)
Green water
Water stored in the soil and vegetation (the invisible part of the hydrological cycle)
Precipitation
The movement of water in any form from the atmosphere to the ground
Evaporation
The change in state of water from a liquid to a gas
Residence time
The average times a water molecule will spend in a store
Fossil water
Ancient, deep groundwater from former pluvial (wetter) periods
Transpiration
The diffusion of water from vegetation into the atmosphere, involving a change from a gas to a liquid
Groundwater flow
The slow transfer of percolated water underground through pervious or porous rocks