water percolation

См. также в других словарях:

• percolation —    ; percolation water    1. Ground water moving slowly through the microfissure network of a limestone, most of which eventually joins a major cave conduit and flows more rapidly. In most environments percolation water enters the limestone… …   Lexicon of Cave and Karst Terminology

• Percolation test — A percolation test (from percolation , colloquially called a perc test) is a test to determine the absorption rate of soil for a septic drain field or leach field . The results of a percolation test are required to properly design a septic system …   Wikipedia

• Percolation — In physics, chemistry and materials science, percolation concerns also the movement and filtering of fluids through porous materials. Examples include the movement of solvents through filter paper (chromatography) and the movement of petroleum… …   Wikipedia

• Percolation trench — A percolation trench, also called an infiltration trench, is a type of best management practice (BMP) that is used to manage stormwater runoff, prevent flooding and downstream erosion, and improve water quality in an adjacent river, stream, lake… …   Wikipedia

• water table —    1. The top surface of a body of slowly moving ground water that fills the pore spaces within a rock mass. Above it lies the freely draining vadose zone, and below it lies the permanently saturated phreas. In uniform aquifers, such as sandstone …   Lexicon of Cave and Karst Terminology

• percolation — /perr keuh lay sheuhn/, n. 1. the act or state of percolating or of being percolated. 2. Pharm. the extraction of the soluble principles of a crude drug by the passage of a suitable liquid through it. 3. Geol. the slow movement of water through… …   Universalium

• percolation water —    Autochthonous karst water which permeates directly through karst limestone without using a surface watercourse [19] …   Lexicon of Cave and Karst Terminology

• percolation —   downward movement of water through soil and bedrock …   Geography glossary

• percolation test — The test to determine the capability of the soil to absorb and drain water, both for construction and septic systems …   Black's law dictionary

• percolation — The movement of a liquid through a porous substance, as water below the surface of the ground. See percolating waters …   Ballentine's law dictionary

• Directed percolation — In statistical physics Directed Percolation (DP) refers to a class of models that mimic filtering of fluids through porous materials along a given direction. Varying the microscopic connectivity of the pores, these models display a phase… …   Wikipedia