much more uniform over the small
the levels of those radionuclides
areas encompassing the three build-
found in the cistern samples.
ings attached to the cisterns.
Shown in Table 3 are the
As additional support for
Osy con-
this
argument, water samples from the
centrations in rainfall at several
drinking water tanks of the L.C.U.
Pacific islands between 1968 and 1974.
support boat R.
When the six-year mean values are
during this expedition to Bikini
plotted as a function of latitude,
have been analyzed for
the interpolated mean quantity of
239,240),
fallout 706. expected in rainwater
derived from rainwater catchment
at the latitude of Bikini Atoll is
systems at Kwajalein Atoll.
only 0.1 pCi/litre.
October 1975 this fresh water con-
have,
on the average,
-concentration.
The cisterns
15 times
V.
Liktanur used
"Cs and
This drinking water is
During
tained 0.6 + 0.2 fCi/litre 239,240, 1
137
this
and 90 + 40 £Ci/litre
Since the cisterns
Cs.
These
were constructed after 1969, we can
values are thus representative of
only conclude that fallout 705. and
the fallout levels in rainfall in
by analogy 137 oO. and
the Marshall Islands.
239,240, u,
con-
tribute only a small percentage to
Table 3.
and
137
Cs
Jevels
in
C
106, in yearly rainfall (pCi/litre)
The 239,240), |
.
this water
are
a
Six-
1968
1969
1970
1971
L972
1973
.
1974
0.35
0.47
0.44
0.35
0.28
0.07
0,25
0.32
Johnston
.36
251
.26
54
(14
Q5
68
36
Guam
.20
-Lli
.13
~13
.10
. 0?
.10
Lil
Yap
12
07
LLL
_ 07
.05
. 008
.O7
.O71
Truk
08
08
LO
08
03
.003
. 06
.061
Koror
.095
mera
07
07
.05
.003
06
.O55
Majuro
Jil
09
14
.O9
.03
. 006
Ponape
0.08
0.07
0.09
eke)
0.03
0.008
Island
Wake
“Data
from Ref.
. 06°
0.05
year
mean
2875
6.061
ll.
-10-
es