e on .

APPENDIX
ASSESSMENT OF WIND PROFILES AND FALLOUT
PATTERNS FOR BIKIN] TESTS
The Bravo and Yankee shots, as previously discussed, both deposited

fallout on the islands east of Bikini.

In both cases,

Bhe lowest

reported contour level was not low enough to circumscribe the Lota)
fallout deposition.

Extrapolation was used to define the 0.2 R/HR (H+])

contour; this level was chosen because it results in anlexposure the

first year of about 200 mrem,which fs about the annua?

Backoround dose.

Shown in Figure 2 is the southern periphery of the Bravojand Yankee
patterns relative to the location of the islands.
The other Castile shots are Romeo, Koon and Union|

off-site

fallout measurements are not available so that their resdective wind
profiles have to be examined.

The Romeo winds at H+3 and H+9 (DASA 1251) were nbt measured
ebove 67,000 ft.

Below this altitude the dominant direction of the

profile is to the north; while not measured for the test,
altitude winds are uniformly to the west.

Thus it is safa@

to state

that the Romeo fallout did not reach any of the off-site

did not reach any of the Marshall Islands.
Shot Union presented a rather unique wind problem.

DOE ARCHIVES.
Although

Therefore a crude reconstruction of the fallout pattern was
by determining the displacement of 50, 100 and 200, partic]
are initially essumed to be at cloud top and at cloud botto

permits the construction of an envelope of all such particle

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