of relative Presnnss:
than ins
voantk Sr?
It is apparent, then, that
July rainout is of mors recect origin than any of the preceeding months.
It has been hypothesized that fallout material which is entering
the troposphere from the stratesphere has « selective entrance zone near
allout material is old and originated
If the
rH
the mid-latitude region.
from a high yield devicz, it is probable that the debris is stratospheric
and upon entrance ints she troposphere can be brought down in rainfall.
It follows that there would be more activity in rain ccecurring near the
mid-latitudes.
Scatter diagrams of gr79 activity versus inches of rainfall for
a
1l values, regardless of location,
>
=
=
+
all months are plotted? ir fizvr: 2
are plotted but stations belty Lo N (an arbitrary limit) appear as black
dots on the plots,
It is visually apparent from the scatter of the points
that there is little
ccrrelation on an overall basis,
Considering a
CQ
separation of the data at lo” MN. there is better correlation found among
activity (mc/mi©/in) of rain water for
my
et
ee
these stations is generality
ctr
The specific
i
5
=~
southern stations.
then Por northern sites for the duration
of the sampling, and ths specific activity at each site does not vary
considerably from month ti month.
ible to obtain better correlation by using
areas.
un
the ho° N separaticen, tr:
uf
fae
Since it has bean
For this purpose,
ide
Beas; a
is expanded by considering even smaller
four areas in different parts of the sampling
network were chosen on the tasis of uniformity of specific activity
throughout the samplirs zizis’
Ts:s areas represent the northeast, north-
west, southeast, and ths conc. t_4 seztions of tre continental United States.
The data for gach of tie. or 2
x
_
mA
“St
s
~
Say
“Na
a
SS a
ne
22 2 letted in figure 3.
oe
“S i a
a “AA ae
—" mh o SAA —
«a *e
we hh.
=
a
s
~JASS
vee St oN
.s
2
a
4
.
.