moisture tension

   The equivalent negative pressure of water in an unsaturated porous medium equal to the pressure that must be applied to the medium to bring the water to hydraulic equilibrium through a porous permeable material with a pool of water of the same composition.
   Synonym: capillary tension [22].

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

Look at other dictionaries:

  • soil-moisture tension — noun : the force per unit area required to remove film water from soil …   Useful english dictionary

  • capillary tension —    See moisture tension …   Lexicon of Cave and Karst Terminology

  • Tensiometer — A tensiometer is a device used to determine matric water potential Psi m (soil moisture tension) in the vadose zone. The tensiometer consists of a glass or plastic tube with a porous ceramic cup, and is filled with water. The top of the tube has… …   Wikipedia

  • Field capacity — is the amount of soil moisture or water content held in soil after excess water has drained away and the rate of downward movement has materially decreased, which usually takes place within 2–3 days after a rain or irrigation in pervious soils of …   Wikipedia

  • pF —    1. see puff    2. symbol for the picofarad. see picofarad    3. a unit formerly used in agricultural science to measure soil suction or soil moisture tension. Soil moisture tension is the pressure that must be applied to the moisture in the… …   Dictionary of units of measurement

  • curve, desorption —    Curve of moisture content verses soil moisture tension [16] …   Lexicon of Cave and Karst Terminology

  • Gypsum — Infobox mineral name = Gypsum category = Mineral boxwidth = boxbgcolor = caption = Desert rose, 10 cm long formula = Calcium Sulfate CaSO4·2H2O molweight = color = White to grey, pinkish red habit = Massive, flat. Elongated and generally… …   Wikipedia

  • suction —    See moisture tension …   Lexicon of Cave and Karst Terminology

  • tensiometer —    A device used to measure the moisture tension in the unsaturated zone [22] …   Lexicon of Cave and Karst Terminology

  • wood — wood1 woodless, adj. /wood/, n. 1. the hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem. 2. the trunks or main stems of trees as suitable for architectural and other… …   Universalium

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