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groundwater |
Also found in: Wikipedia, Hutchinson | 0.14 sec. |
groundwateror subsurface waterWater that occurs below the surface of the Earth, where it occupies spaces in soils or geologic strata. Most groundwater comes from precipitation, which gradually percolates into the Earth. Typically, 10–20% of precipitation eventually enters aquifers. Most groundwater is free of pathogenic organisms, and purification for domestic or industrial use is not necessary. Furthermore, groundwater supplies are not seriously affected by short droughts and are available in many areas that do not have dependable surface water supplies. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Regardless of depth, investigations of diagenesis must take into account the conditions during and right after deposirion, which determine the types and amounts of primary porosity and the chemistry of the pore water that may or may not have been buried with the sediments/rocks. Besides enhancing vegetation growth, paper sludge also minimizes erosion of the tailings caused by winter and water, reduces acid generation and runoff, and lowers metal concentrations in vegetation and pore water. They also drilled into a heat-flow low and measured changes in the chemical concentrations of the pore water along the hole. |
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