the location of organic layers in
some variability in pattern in the
of
upper parts of the profiles (see Figs.
the profile.
5-9;
tends to concentrate radioactivity,
Appendices A and B).
tions,
limited in area,
Other loca-
can be assigned
different "typical" profiles.
Because organic matter
nonuniform patterns of radionuclide
concentration may result from organic
In general, profiles from Bikini
layers
that have been buried recently
Island show decreasing activity levels
by construction and rehabilitation
with depth.
activities.
In contrast,
those from
Although it is difficult to gener-
Eneu Island exhibit a pattern of
alizé about patterns of activity dis-
levels from surface to
tribution,
ct et ee
:
uniform or slowly decreasing activity
depth.
total-sampled
of the dominant nuclides show a con-
The variations seen in the
profiles on Bikini may be the result
I
I
TO
I
sistent
90 Sr
trend:
and
137, Cs >,
To
Concentration in mature coconut
jeaves — pCi/g dry weight
Linear regression line
y = 0.1149x% + 1.667
0
[Lo
25
a
50
75
100
Concentration in soil — pCi/g dry weight
Fig.
the
5.
Correlation of
concentration of
the
9065.
0
in
Sr
concentration
the
soil
ce
om
—
ay |
emt
-16ore,
a togatan
eV eee dw
fs
Fe ae eee ie
15
the relative concentrations
at
the
.
in
mature
same
site.
coconut
a
leaves
Loy
with