specific yield

specific yield

[spə′sif·ik ′yēld]
(hydrology)
The quantity of water which a unit volume of aquifer, after being saturated, will yield by gravity; it is expressed either as a ratio or as a percentage of the volume of the aquifer; specific yield is a measure of the water available to wells.

specific yield

The percentage of water which will be yielded by a rock or soil (by gravity) after being saturated; computed in terms of the ratio of the volume of water retained to its own volume.
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References in periodicals archive ?
RBRC testing provides valuable porosity data to help determine specific yield of the aquifer materials.
The specific yield growth improvement targets will vary by crops and countries and will also depend on the overall trajectories of food demand and on how much more land should be utilized for agriculture, or to what extend cropping intensity on existing land can be increased.
In upper part of Doab the porosity of aquifer ranges from 35 to 45 percent with specific yield of 14%.
The effective change in watertable depth is multiplied with the gross command area and specific yield of the soil [10].
where R(tj) (cm) is recharge occurring between times t0 and tj Sy is specific yield (dimensionless) and H(tj) is the peak water level rise attributed to the recharge period (cm).
g] is the specific yield of pyrolysis gas, kg/kg of dry oil shale; [g.
On the other hand, under water stress conditions the same situation was observed as observed in normal condition for specific yield trait studies.
Fed officials said the purchase of Treasuries isn't designed to target any specific yield levels.
For example, when creating a yield map, we can assign a color to each yield point based on the specific yield value (red for low yields, yellow for medium yields, and green for high yields is a logical color assignment).
A specific yield may, however, be fixed for irrigated crops.

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