moisture equivalent

moisture equivalent
   The percentage of water retained in a soil sample 1 cm thick after it has been saturated and subjected to a centrifugal force 1000 times gravity for 30 min. Centrifuge moisture equivalent is the water content of a soil after it has been saturated with water and then subjected for 1 hour to a force equal to 1000 times that of gravity [22].

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

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  • Moisture equivalent — is proposed by Lyman Briggs and McLane (1910) as a measure of field capacity for fine textured soil materials. Moisture equivalent is defined as the percentage of water which a soil can retain in opposition to a centrifugal force 1000 times that… …   Wikipedia

  • moisture equivalent — noun : the water content expressed as a percentage of the dry weight that a soil can retain against a centrifugal force one thousand times the force of gravity and used as a convenient laboratory measure of soil moisture conditions …   Useful english dictionary

  • centrifuge moisture equivalent —    See moisture equivalent …   Lexicon of Cave and Karst Terminology

  • 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 …   Lexicon of Cave and Karst Terminology

  • equilibrium moisture content — noun : the condition of balance with the moisture content of the air, being in wood equivalent to about 15 percent of moisture at which level wood neither takes on nor loses moisture when exposed to air …   Useful english dictionary

  • pore moisture — n moisture in the pores of coal, which may be quantitavely equivalent to or less than inherent moisture depending upon the state of dryness of the sample …   Coke&Coal Terminology

  • 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

  • Pedotransfer function — (PTF) is a term used in soil science literature, which can be defined as predictive functions of certain soil properties from other more available, easily, routinely, or cheaply measured properties. This concept arises in soil science as… …   Wikipedia

  • Lyman James Briggs — which was named in his honor. He worked as a civil servant for the U.S. Government for 49 years.Personal and academic historyLyman James Briggs was born on a farm in Assyria, Michigan near Battle Creek, Michigan. He was the eldest of two brothers …   Wikipedia

  • Permanent wilting point — (PWP) or wilting point (WP) is defined as the minimal point of soil moisture the plant requires not to wilt. If moisture decreases to this or any lower point a plant wilts and can no longer recover its turgidity when placed in a saturated… …   Wikipedia

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