12.
region of Kabelle Island in late 1954 and from 1956 to 1957.
Tre «unusual pattern near Kabelle Island is undoubtedly assocdate! witn its geograpnical location.
commer of the atoll,
Isolated in the northeastern
it is so located that unless fallout occurs
directly there, a long time may be required for activity to drift
there bo: lagoon currents.
Kib>lie Island,
Although fallout in March 1954 did hit
the adjacent lagoon area may have been temporarily
refveshed by relatively uncontaminated ocean water entering from
she inter-isiand channels at the time plankton was first sampled
near Kahellie in July 1954.
‘Then, by December 1954 an influx of
contaminated lagoon water could have occurred near Kabelle.
The rise from 1956 to 1957.
probably resulted from a similar
influx near Kabelle Island of contaminated lagoon water,
since in
tais cuse it is fairly certain from data on terrestrial sampling,
that the 1956 fallout did not @ffect Kabelle Island as much as it
did the more southern islands.
Because of its isolated location
this northeast bay of the lagoon may be expected to.vary in the
radlLoactivity of its plankton.
Figure 3 snows, on log-log plot,
|
the decay patterns of six
Ordinal
Samples counted on more than three occasions.
Ordinal values apply
only to eich curve separately, and do not permit comparison of absolute racitoactivity between curves.
as March 1,
The date of reference is taken
1354 because the detonation of this date is believed to
nave contributed many times as much radioactivity to the atoll as
”*{ARCHIVESYor
=
ep ee
atia