Aquifers

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  • Aquifers
definition
  • Pertaining to subsurface rock layers that store and transport water through pore-space within the units.
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broader
Abstract from DBPedia
    An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt). Groundwater from aquifers can be extracted using a water well. Aquifers vary greatly in their characteristics. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology. Related terms include aquitard, which is a bed of low permeability along an aquifer, and aquiclude (or aquifuge), which is a solid, impermeable area underlying or overlying an aquifer, the pressure of which could create a confined aquifer. The classification of aquifers is as follows: Saturated versus unsaturated; aquifers versus aquitards; confined versus unconfined; isotropic versus anisotropic; porous, karst, or fractured; transboundary aquifer. Challenges for using groundwater include: overdrafting (extracting groundwater beyond the equilibrium yield of the aquifer), groundwater-related subsidence of land, groundwater becoming saline, groundwater pollution.

    帯水層(たいすいそう、Aquifer)とは、地中の透水層において、地下水によって飽和している地層のことを指す。不飽和の層は不飽和帯と呼ぶ。

    (Source: http://dbpedia.org/resource/Aquifer)