OPERATION REDWING -
DATE:
TIME:
PVG Pie
- 22 dun 1yb6o
0626
Flathead
GMT
sponsor:
11 dun LYyoo
1826
SET:
LASL
PpG - Bikini - 5,000 ft south
of Dog,
1L° 3G!
165° py’
Site elevation:
HEIGHT OF BURS?:
oo"
05"
N
&
ea Level
15 iy
TYPE OF BURST AND PLACEMENT:
surface burst from barge on
water; center of gravity
approx. 15 [t above surface
of water; water depth 114 ft
CLOUD TOP HEIGHT: 65,700 ft MSL
CLOUD BOTTOM HIGHT: 38,600 ft MSL
REMARKS:
The on-site fallout pattern was drawn from island readings taken
by scientific projects supplemented by fallout sample collection on
rafts and barges in the lagoon.
Actual field decay measurements, which
indicated a decay exponent
were used to extrapolate the
dose-rate readings to H+l hour.
The off-site fallout pattern was drawn from oceanopraphic surveys.
The oceanographic surveys used detector probes for measuring the doserate at depths to and below the thermocline.
Water-samplings equipment
was used for the taking of surface samples and for the collection of
samples from any desired depth.
The dose-rate readirgs were extrapolated
to H+] hour by using the decay measurements of the samples -vollected.
Very little of the fallout should have been associated with solid
particles large cnough to penetrate below the thermocline.
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