perched ground water — Ground water separated from an underlying body of ground water by an unsaturated zone [6]. See also ground water, perched … Lexicon of Cave and Karst Terminology
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
perched water table — Unconfined ground water separated from an underlying body of ground water by unsaturated soil or rock. It may be either temporary or permanent … Lexicon of Cave and Karst Terminology
Mohave ground squirrel — Conservation status Vulnerable (IUCN 3.1) … Wikipedia
On Dangerous Ground — For other uses, see On Dangerous Ground (disambiguation). On Dangerous Ground Theatrical release poster Directed by Ni … Wikipedia
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
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Geothermal areas of Yellowstone — Map of all coordinates from Google Map of all coordinates from Bing Export all coordinates as KML … Wikipedia
Gley soil — in soil science is a type of hydric soil which exhibits a greenish blue grey soil color due to wetland conditions. On exposure to the air, gley colors are transformed to a mottled pattern of reddish, yellow or orange patches. During gley soil… … Wikipedia
Eurasian Crag Martin — Perching on a roof in Alcobaça, Portugal Conservation status … Wikipedia
