-5-
Comparison
computer
Strauss~61
Table 1.
of gross fission
calculations
vs.
Evacuation
(hours)
Atoll
Rongelap
(northern
part)
Rongelap
(southemtern
part)
Ailinginae
(Sifo island)
Rongerik
(southeastern
part)
~tirik
product
total external doses for
and
estimates
by Dunnin$sl
Previous
Estimates
(roentgens)
Present
Calculations
(rads)
Time
51
1300
2000
[61
51
110
175
[51
58
24
<100
[51
30
340
78
[51
%10
[51
78
0.33
W’ith the modified MATHEW-ADPIC
...
instantaneous
immersion dose rate from
code suite,
time.
inteval.
This
immersion
can
debris
for any time
the trade
gross
it is possible
to calculate
products
as a function
fission
Figures
Note that after
wind level;
the contour
an easterly
pattern
the
of
2a to 2f show surface
for every three hours from one hour after
time to H+l 6 hours.
reaches
toward
be done
dose rate contours
stabilization
Ref.
traverse,
moves south
Bravo cloud
most of the
and finally
the southwest.
Individual
Nuclides
Calculations
at 2 m above
nuclicles
were made of instantaneous
the surface
were
considered
Te-1 29,
i-l 31,
a=greewell with observations
calculations
too hi~h at Rongerik
Ronqelag,
for the several
.+toll are presented
is in ageement
and southeastern
in Figures
with reports
atolls
affected
I-1 33,
at Rongelap
and too low at Utirik
both the northern
and time-integrated
atoll.
parts
by Castle-Bravo.
(2s-1 37,
and
The surface
of the atoll,
The
Eu-1 55.
and Ailinginae
3a to Se. The time of arrival
made by the inhabitants.
concentrations
atolls,
These
but are
concentrations
for
and for Ailiginae
of the first Bravo debris