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Moisture equivalent information


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 of gravity. It is measured by saturating sample of soil 1 cm thick, and subjecting it to a centrifugal force of 1000 times gravity for 30 min. The gravimetric water content after this treatment is its moisture equivalent. This concept is no longer used in soil physics, replaced by field capacity.

Lyman Briggs and Homer LeRoy Shantz (1912) found that:

Moisture Equivalent = 0.02 sand + 0.22 silt + 1.05 clay

Note: volume of water stored in root zone is equal to the depth of water in root zone (Vw=Dw)

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Moisture equivalent

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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...

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Moisture meter

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the same manner as wood and displayed in Wood Moisture Equivalent, or WME. WME is the theoretical moisture content that the substrate would contain if it...

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Rainscreen

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exterior wall detail where the siding (wall cladding) stands off from the moisture-resistant surface of an air/water barrier applied to the sheathing to create...

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Field capacity

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water-holding capacity. Field capacity improves on the concept of moisture equivalent by Lyman Briggs. Veihmeyer & Hendrickson proposed this concept as...

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Permanent wilting point

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−15 bar. Available water capacity Ecohydrology Field capacity Moisture equivalent Moisture stress Nonlimiting water range Soil plant atmosphere continuum...

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Water content

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Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture), rock, ceramics, crops, or wood...

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Water distribution on Earth

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saline or salt water, with an average salinity of 35‰ (or 3.5%, roughly equivalent to 34 grams of salts in 1 kg of seawater), though this varies slightly...

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Snow

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Snowstorms organize and develop by feeding on sources of atmospheric moisture and cold air. Snowflakes nucleate around particles in the atmosphere by...

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Lyman James Briggs

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physics. In 1906 he devised a soil classification technique called the moisture equivalent based on centrifuging, which is now thought of as the first Pedotransfer...

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TDR moisture sensor

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A TDR moisture sensor employs time-domain reflectometry (TDR) to measure moisture content indirectly based on the correlation to electric and dielectric...

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Dew point

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water content of the air. When the air is cooled below the dew point, its moisture capacity is reduced and airborne water vapor will condense to form liquid...

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Ton

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or suspended in water) has been dried to a relatively low, consistent moisture level (dry weight). If the material is in its natural, wet state, it is...

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Water resources

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shallow aquifers, but, in the technical sense, it can also contain soil moisture, permafrost (frozen soil), immobile water in very low permeability bedrock...

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Black coal equivalent

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The Coldry Process is applied to brown coal (lignite) with a typical moisture content of 60 per cent by weight and transforms the coal into a densified...

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Pedotransfer function

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infers data that is not known with minimal inaccuracy (predictor). Moisture equivalent Nonlimiting water range Soil functions Bouma, J. (1989). "Using Soil...

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Water vapor

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buoyancy can have a significant atmospheric impact, giving rise to powerful, moisture rich, upward air currents when the air temperature and sea temperature...

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Soil moisture velocity equation

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The soil moisture velocity equation describes the speed that water moves vertically through unsaturated soil under the combined actions of gravity and...

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Water cycle

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water becomes soil moisture or groundwater. A recent global study using water stable isotopes, however, shows that not all soil moisture is equally available...

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Mokosh

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Mokosh Goddess of Mother Earth, fertility, fate, harvest, moisture, sexuality, patroness of women, children, childbirth, home, weaving. Modern wooden statue...

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Potential evapotranspiration

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of water or soil moisture percentage. If the actual evapotranspiration is considered the net result of atmospheric demand for moisture from a surface and...

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Videocassette recorder

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operation in this case, but it could not detect moisture on the surface of a tape. The presence of moisture between the tape and the rotating head drum increases...

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Hygroscopy

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powder, such as a salt, may become clumpy over time due to collection of moisture from the surrounding environment. Deliquescent materials are sufficiently...

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James Arthur Prescott

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1931 and with H.G. Poole, 'The relationships between Sticky Point, Moisture Equivalent and Mechanical Analysis in some Australian Soils' in 1934. Prescott...

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Round steak

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moist-heat methods including braising, to tenderize the meat and maintain moisture. The cut is often sliced thin, then dried or smoked at low temperature...

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Equivalent temperature

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In atmospheric science, equivalent temperature is the temperature of air in a parcel from which all the water vapor has been extracted by an adiabatic...

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Nonlimiting water range

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PWP}. Integral energy Irrigation scheduling Limiting factor Moisture equivalent Moisture stress Pedotransfer function Soil plant atmosphere continuum...

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Isopoda

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able to roll themselves into a ball as a defense mechanism or to conserve moisture. There are over 10,000 identified species of isopod worldwide, with around...

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Rain shadow

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facing away from prevailing winds, known as its leeward side. Evaporated moisture from water bodies (such as oceans and large lakes) is carried by the prevailing...

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Precipitation

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air. Provided there is necessary and sufficient atmospheric moisture content, the moisture within the rising air will condense into clouds, namely nimbostratus...

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Trimethyloxonium tetrafluoroborate

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agent, being a synthetic equivalent of CH+3. It is a white solid that rapidly decomposes upon exposure to atmospheric moisture, although it is robust enough...

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