_ CHAPTER 3
TOTAL WORLD-WIDE FALLOUT
3.1 CASTLE TOTAL
The total world-wide fallout from each of the Castle tests
(except Koon) and from the whole series has been computed on the
basis of results from the monitoring network,
Since none of the
stations were located immediately downwind of the test area so
as to exverience fallout in the first day or two following a
detonation, it is apparent that by far the largest fraction of
the fallout, the "close-in" fallout, has not been measured.
A composite man for the commlete series. showing the total
of all fallovt occurring through June 30, 195h, and decayed to
July 1, 1954, is shown in Figures 3.1 and 3.2.
These maps contain
the cumulative total of all debris denosited on the network from
February 28 tnrough June 30, 1954.
The debris was extrapolated
~w July 1 on the basis of the burst assignments indicated in
Apvendix A (excent for fallout occurring after May 21, which was
reextrapolated to Yankee, see Section 2.6).
TIsolines of activity were interpolated between stations and
the average fallout for the world was computed, by numerical
integration, to be 919 d/m/ft°3 for a total of 22.73 megacuries.
3.2 TOTALS FOR INDIVIDUAL TESTS ~~ 7
To obtain the total fallout due to each of the individual
tests,
the following crocedure,
was used,
At each station, all
fallout assigned tc the given burst, as indicated on tne macs of
Anvendix A, was summed, and the total fallout values, in d/m/ft
at 100 days after burst, were entered on a mao.
(For these comoutations, fallout occurring after May 21 was not considered, since
there was some doubt as to burst assignment.)
In the event that
.data were missing for an occasional day at a given station, the
--Missing values were estimated by interpolation. If data were missing
for a number of days, the sum Was entered in parentheses and
indicated as a lower limit of activity.
Isolines of activity were
drawn and the total fallout computed by numerical integration.
-19 =
~