In the
and
The
crater
207Bi
1 although
soils
nuclides
only
seclimerits
others
and sediments
in surface
soil
samples
rates
were
samples
were
taken
measured
in proportions
are obvious.
~Le
of the
of 137 Cs
(Tables
t
quantities.
of radionuclides,
other
plutonium,
collected
are given
and individual
In general,
than
ality
are not
remain
1965:
the highest
are maximum
water
137
of
samples
1.
dose
Differences
at the islets
concentrations
Eneman
in Table
gamma
values.
radionuclides
in the
of gamma-ray
result
and consequent
ten.
in 1970
areas.
since
from
Fallout
concentrated
Welanderr
analyses
concentrations
surprising,
samples
spectrum
collected
in undisturbed
than
where
than
sampled
Cs relative
from periodic
leaching
away
2 and 3).
samples
for individual
in 1969
areas
low
radionuclide
areas
well-point
from
area by tidal
The results
meter
90~r
of radi,o–
~nusudlly
flooding
et al.,
co,
reservoirs
of different
radionuclides
soils
in small
60
1
are the principal
and hence
to other
of more
are present
55Fe
:
at Bikini.
The concentrations
The
four predominate
the
at Bikini
increments
in 1970,
are
lower
The
Island
and the
to this
transects
differ
values
factors
atoll
for many
(Held
ten
sampled
samples
by
gener–
in undisturbed
surface
were
4.
in bulldozed
and highest
surface
composite
in Table
lowest
radionuclides
at the
four
are given
The exceptions
single
1967).
of the
show
years
centimeters
by one–half
a gradient
at
centiof