ground fallout plot

ground fallout plot

[¦grau̇nd ′fȯl‚au̇t ‚plät]
(nucleonics)
Time lines plotted within a radioactive fallout plot that approximate the distances to which local fallout will have spread at the end of succeeding hours; these lines are determined by using the rate of fall of the radioactive material and the mean wind vector (fallout wind) in the layer of air through which the material is falling.
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