CHAPTER 3 TOTAL WORLD-WIDE FALLOUT 3.1 CASTLE TOTAL The total world-wide fallout from each of the Castle tests (excent 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 experience 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 map for the complete series, showing the total of all fallout occurring through Jue 30, 1954, and decayed to July 1, 1954, is shown in Figures 3.1 and 3.2. These maps contain the cumulative total of all debris deposited on the network from February 28 through June 30, 1954. The debris was extrapolated to duly 1 on the basis of the burst assignments indicated in Appendix A (except for fallout occurring after May 21, which was reextrapolated to Yankee, see Section 2.6). Isolines of activity were interpolated between stations and the average fallout for the wopld was computed, by numerical 3.2 rom ‘integration, to be 919 d/m/ft* for a total of 22.73 megacuries. TOTALS FOR INDIVIDUAL TESTS To obtain the total fallout due to each of the individual tests, the following procedure, was used. At each station, all fallout assigned to the given burst, as indicated on the maps of ‘Appendix A, was summed, and the total fallout values, in d/m/ft at 100 days after burst, were entered on a map. (For these compu- tations, 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 = fgges Joe wl Delefed. ‘