phreatic aquifer


phreatic aquifer
n
безнапорный водоносный горизонт

Англо-русский строительный словарь. — М.: Русский Язык. . 1995.

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  • Aquifer — Typical aquifer cross section An aquifer is a wet underground layer of water bearing permeable rock or unconsolidated materials (gravel, sand, or silt) from which groundwater can be usefully extracted using a water well. The study of water flow… …   Wikipedia

  • Phreatic — The term phreatic is used in Earth sciences to refer to matters relating to ground water below the static water table (the word originates from the Greek phrear , phreat meaning well or spring ). The term phreatic surface is where the hydrostatic …   Wikipedia

  • Phreatic zone — The phreatic zone (from Ancient Greek phrear, phreat a well ), or zone of saturation, is the area in an aquifer, below the water table, in which relatively all pores and fractures are saturated with water. The phreatic zone may fluctuate with… …   Wikipedia

  • Chad Basin — The Chad Basin, also known as the Lake Chad Basin, is a large lowland area in north central Africa. In all directions from the center of this area the elevation changes are gentle. The Chad Basin is an endorheic (closed) basin its water does not… …   Wikipedia

  • Tschadbecken — Staubsturm über dem Tschadbecken am 18. November 2004 Quelle: NASA Das Schari Logone Fl …   Deutsch Wikipedia

  • Groundwater — Shipot, a common source of drinking water in a Ukrainian village. Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an… …   Wikipedia

  • Water table — The water table is the level at which the ground water pressure is equal to atmospheric pressure. It may be conveniently visualized as the surface of the ground water in a given vicinity. It usually coincides with the phreatic surface , but can… …   Wikipedia

  • SahysMod — is a computer program for the prediction of the salinity of soil moisture, groundwater and drainage water, the depth of the water table, and the drain discharge in irrigated agricultural lands, using different hydrogeologic (aquifer) conditions,… …   Wikipedia

  • Phreatomagmatic eruption — Phreatomagmatic eruptions are defined as juvenile forming eruptions as a result of interaction between water and magma. They are different from magmatic and phreatic eruptions. The products of phreatomagmatic eruptions contain juvenile clasts,… …   Wikipedia

  • vadose cave —    1. A cave that underwent most of its development above the water table. Within the vadose zone, drainage is freeflowing under gravity, and cave passages therefore have air above any water surface. The gravitational control of vadose flow means …   Lexicon of Cave and Karst Terminology

  • water-table map —    A map showing the upper surface of the phreatic zone of a water table aquifer by means of contour lines [1].    See also phreatic zone; potentiometric surface map; water table aquifer …   Lexicon of Cave and Karst Terminology