PREDICTION OF RADIONUCLIDE DEPOSITION
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1/24 3/21 5/16 7/11 9/5 10/3112/26 2/20 4/16 6/11
[1963 i 1964
Fig. 8—Average airy and rain concentrations of gross beta radioactivity for four-week sampling periods between Dec. 27, 1962, and June 15,
1964, in the western Lake Erie area.
‘but the correlation coefficient was less than 0.2 and not significant at
any reasonable level of confidence. The samples were divided into
periods of fresh and older fallout, but still no significant correlation
could be found between air concentration and rainfall. It was concluded
from these observations that in the climate studied at least the air
concentrations of radioactivity at a given location are less dependent
on the amount of local rainfall than they are on some more widespread
phenomena. However, this may not be true in other climates.!”
CONCLUSIONS
There appears to be a correlation between the radioactivity in surface air and the radioactivity in rain. The measurements reported here
and those of others indicate that this relation can be described by an
exponential model. However, the use of such a modelto predict depo-
Sition will be limited until the behavior of certain terms in the model