Subsidence: Sinking down of part of the earth's crust due to underground excavation, such as removal groundwater.
Subsidence. Sinking of the land surface due to a number of factors, of which groundwater extraction is one.
Subsidence: A depression of the land surface as a result of groundwater being pumped. Cracks and fissures can appear in the land. Subsidence is virtually an irreversible process.
Sustainable yield: See safe yield.
Subsidence
Sinking or settling of soils so that the surface is disrupted, creating a shallow hole.
subsidence Sinking or settling of the ground surface due to natural or anthropogenic causes, such as loss of fluid pressure or removal of underlaying subsurface support.
Subsidence: The sinking or lowering of the land's surface relative to average sea-level. This can be caused by a number of factors. On the Atlantic coast it is mostly caused by post-glacial rebound.
A return flow aloft and subsidence over the eastern ocean complete the cell. water stress effect The closing of the stomata by a plant in response to excessive water loss through transpiration or in response to drought conditions.
Encourage students to suggest additional factors that influence ocean levels such as movement of the ocean floor, evaporation, subsidence, run off from snow melt, changes in currents, salinity levels and so on.
In the Pacific, air flows westward from the colder, eastern area to the warm, western ocean, where it acquires warmth and moisture and subsequently rises. A return flow aloft and subsidence over the eastern ocean complete the cell.
 See also: Water, Liquid, Environment, Table, Well
  
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