6.2.10 Growth of Shot 1 Fallout Pattern with Time It must be realized that the reconstructed fallout pattern de- scribed in Fig. 6.6 indicates for convenience the levels of activity t thet would exist should all of *he fallout particulate be down at O+1hr. Of course, this is not tne case, for the primary pattern out to arproximately 260 nautical miles was not static until some 20 hr after shot time. Firures 6.8 through 6.12 show the growth of the pattern with time. The gamma field levels are those that would exist at thesa times over a land area. In construction o° these patterns consideration of both decay and time of arrival as indicsted by Fig. 6.13 were taken into account. 6.3 EATENDSD FALLOUT PATTERN POR SHOT 2 Bikini Atoll was not heavily contaminated after Shot 2 was deton nated duc to the primary fallout falling to the nortn of tne saot point. Eleven o° the samples fron the free-floating sea stations recovered after Shot 2 were evaluated and it was founc tuat the nain swath of fallout crossed over the station array. Of tha 11 stations recovered seven were in the fallout narca as indicated by Table 5.9. data were reduced and analyzed by Froject 2.6a. The total collector TABLE 6.9 — Shot 2, Gamma Infinite Field Levels Converted to r/hr av 1 hr as Determined by Various Techniques | | L Beering from * Distance from Cimmed Faper Station | Groun2 Zero 1. (degrees truc): \ | Ground Zero (n miles) 43 | 882 Py 271 34, Q, 295 34 Ty Ae 337 347 43 52 De 35 O54 075 53 53 Fs 095 53 0, Ry (a) 247 308 . 2, collector Analysis (a) (r/ar) (r/ar) 120 ‘120 0.2 2.0 1.0 33 6 435 | : O01 | 110 480 220 147 90 / 90 0 0 ~ 0 AS evaluated by Project 2.6a. 92 Total Collector Analycis ee | - | |