threshold velocity

threshold velocity

[′thresh‚hōld və‚läs·əd·ē]
(geophysics)
The minimum velocity at which wind or water begins to move particles of soil, sand, or other material at a given place under specified conditions.
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303 service rifles and concluded that the threshold velocity of the recoiling gun that induced flinching in riflemen was about 16 fps.
As the user exceeds the threshold velocity for the high reliability traffic type with unknown mobility pattern, the proposed scheme tends to be executed more frequently.
For an alternate method of determining your proper tempo run pace, please see How to Determine Your Lactate Threshold Velocity in this issue.
This threshold velocity will become very important when putting everything together to choose your ammunition.
This threshold velocity is given by this empirical equation; (Oke & Hannel, 1970):
1] = dt, the threshold velocity is reached when static effects yield to dynamic effects, and friction drops.
The fluid threshold velocity is defined as the minimum velocity required to produce soil movement by direct action of the wind, and the impact threshold velocity is the minimum velocity necessary to initiate movement from the impact of soil particles carried by saltation.
The objective of this study was to evaluate various PAM formulations for their effectiveness in controlling wind erosion by their effect on (a) the amount of loose erodible material on the soil surface after treatment, (b) the freestream threshold velocity, and (c) abrasion of the treated surface in the laboratory and in the field.
Although rain erosion behavior is not easily predicted, experimental evidence suggests that the onset or threshold velocity ([v.
As a result, the so-called threshold velocity - the minimum wind speed needed to initiate erosion - decreases.
Short for lactate threshold velocity, this is the indicator of how fast you can run at (or just below) the threshold at which you begin to dramatically increase your blood lactate levels.