Summary
Leveis of netivity: of the plankton for the eastern lagoon
1,
were s mmled nine vines in 1364-58.
The first observed level
dua Marea 26, 1954, 25 davs after detonation of "Bravo" at Bikini,
%i8, oxmressed in microcuries per kilogram of planktonic asn,
WJC.
Fy caid-December 1954,
Ceteber
i755,
to 6.
1% nad decline to 50,
about
and by late
Fallout fror the Redwing series raised the
Sulv Jf Level to apprexinately 100.
In July 1957 levels were
Scill betneen 15 and 260, but ty euirty March 1958, had declined
to u.d.
Vallout from tne MNur'taex series raised August 1958
lovels so only 0.2 -4 ucfee aca,
Tue cecline rave,
and Heordtuck,
two peaks following Redwing
was steep
-3.5.
ne dutz for the veurs 1254-57,
cc
%y
S
discrecariing tae
but includli; their later residual effects,
a tiape of
uf
ee
Nn
With
the list observation.
it was shown that results
weve ne .rly twice as consistent when cased upon ash as upon wet
welsht,
ang that there wis no significant difference in activity
between sumoles taken with fine and coarse meshed nets.
4,
On tne aan welgnt basis,
tne levels in 1955 at Atlinginae Atoll
were no aluner tnan at Ronselap Atoll,
whereas they were higher on
4,
7
the veo veight basis.
eciy sloves of pre-Redving samoles ranged from -1.6 to -2.4,
wnile tne decline slope for the lagoon as a whole over this period
viS
-*.6,
so
tnhut tne decline was more rapid than the decay.
DO® ARCHIVES