ANT
DPSCrO prs
The estimated carat) ns of fatlent wre
result from the above ¢strigeatier ot ran.
fallout rate for (iroup
oan [EL appear os
long to have oeeurey a tle dustarne yt
these people from the net ~ aid osbipte be
wind velocity in the rea was bigh ona!
to move the clona
oo er
considerably shoiter tome
che
islands
i
oe aitie as nor
half of the above anedicuted ©
ne
The accounts of tae oi traty of tue fatlo. ty
although conflier ng
8 bet ndi emt) se
late cessation
Doses calculated ono a org tallow eonstan
rate of increase ivpofiesix are lower tha
those due to a shor ‘about slnee a shan?
fallout quickly aepesi -
mee amon a!
Por beth oor ot wear abd ™ ot vue
activity.
fallout assumptieth i sane callie Wars oe et
mated
The ranzes a
tthe ous ollows
SPOSE Y
GROUPS
~
FN
hoo
Vamk atoll Grroup PV. only a fallout
ite of abou’ 12 hours or less is consistent
with the ater dose rates observed, provided
(+ fallout actually began as late as was
-stimatec from wind and distance factors.
» cen fallow probably would not be umformls heavs throughout, the first portion
seettior EP bbe Most intense and the balance dereusing vith tume
The total phenomenon
wold thus rend toward the effect of a
norter fallout
This is supported by moniot data from. other nuclear events. where
ratuulv Seavey fallout is reported to produce
.ooeak oO alr-borne radioactivity soon after
umisai, with the airborne activity level then
iverpusipy
The latter part of the fallout.
Nougy still detectable as dust, may then
oroduece only a small fraction of the total
fase ‘ropa miatertal on the ground. Hence
ra total dose may be estimated fairly ae-
Lately bs assuming a constant fallout to
omplete in a much shorter
Fe ery
raves
Tee ye) time
Sie dose values given in Table 1.1, based on
Pook No:
Path
oo"
ME
she
Rongelap (Giraip |
Ailinginae Ciro ps |
Rongertk 'Girouy i 7!
Utirik iCrroupe +
ya
an
1h
2
()ooniidyve., meter and monitor data, are con‘tent with a constant fallout hypothesis of
ahr
2
V2
‘Nhs
~ nous etfeetive time. ‘ ()ne exception
toute: he dose vidues for Grroup LIT are about
tontg*
peaeettofthe 12 hour fallout value, averaged
soy
oane
O+ hour exposures,
This was felt
Xpress most accunutely ‘he average air dose
On Rongertk ‘Giou, [| nose
readings were ob nine ati:
only dareet eviddenee
©
tod alta odes
‘itistil life ope
t dha clase
SET,
badges worn bott auteoo sag peideheut
eonstructed burdinges 9
about 50 to Hs
ile ots
mained outdoor over chs
read 98 ro
Ane ber
+e ‘sah
“HA
badd wenger
ts 4 tte pete
croup. ft Dptdges
ene
Indoors inside a steel otro ater read oN
These dose values eooressn go ometet
eonditions but
ans de one ta sciebelne
and attenuation facoot~ aoe consistent are:
the assumption
fiat toe des. outside a) cine
the first YS A hieurs tte cu peut
the fallout coprespeerne cer cs pteur bP ayy
of constant falle oe
soe ved by personnel who spent roughly half
eorotdpe doiside structures where the dose rate
vee fore ta be coughs half that out-
cag
On the other islands such shielding was
toasaratbye
cape
2 5,
Hoot
VIustrates
the
cumulation
of
oatvdose as a fraetion of time after deto-
Fie!
The cose rate varied continuously.
eo cijar oart onoof radiation was received at
oourher cose oite prevailing in the early por-
Hoot toe eXpesure perrad.
Ter
eet
Tw the time that
2 bors cebiti is resmifis cao values which ire
dpe ttre
he
pe.
Py ated
pods
of “Pable Plo bw 3 te bb or, Table 11
adendated before sdb speeccum detta
certainey
ba aib the informacion is
cifferener
wea ds meglected