DRAFT
—————
Studies of these physical aspects, ae well as mo2sure~
ments of the background of radioactivity, were conducted
aboardthe Seripps vessel M. V. HORIZON during 5 April -~ 5
May 1956 in a rectangular area reaching 100 miles to the south,
200 miles to the west and north, and 250 miles to the cast of
Bikini Atoll (Fig. 1A4).2
Particular attention was given to
background radioactivity anc res neer Bikini end the most
probable fallout areas (Fig. 1B),
ckereune in and rate of
eflux of water from Bikini Llageon, and fallout particles on
the deep ocean bottom fron the CASTLE events.
rediosetivity was
Paar
studied in Atlinginae Legcon.
As vseG in this report, redioactivity Lackgercvnd is tke
total amount duo to the combinetion of naturally cccurring
radicactive elercnts and the radioactivity
s
remaining from
eport was prepared in the field during and immedi-«
ately following thc cata collecticns; it is for uso by Progran
Ocsenogzreanher.
_-_—
2e
=
ee
ee
wee
Ail figures ere at the end of the rescert,
12
[2
Corier LAM
Ro we
¢