SURVEY OF RADIOACTIVITY IN THE SEA AND IN PELAGIC MARINE
LIFE WEST OF THE MARSHALL ISLANDS SEPTEMBER 1-20, 1956
INTRODUCTION
The amount of radioactivity in the sea and in pelagic
marine life during and following weapons tests at the Pacific
Froving Ground has been the subject of reports by United States
tennant st ie Rares ie
ee
and Japanese laboratories.
Following the 1954 test series, the Japanese survey ship,
Shunkotsu-Maru, made & general survey of the amount and distritution of radioactivity in sea water and in some of the ma-
rine life in the region west of the Marshall Islands.
The re-
port of the Japanese survey indicated that measurable amounts
of radioactivity were to be found in the sea even @és late as
the spring of 1955.
Operation Troll’ vas conducted during the spring of 1955
to measure the level of radioactivity in the sea and the movement of the water mass containing the radioactivity.
This was
a joint operation of the New York Operations Office, U. 8S.
Atomic Energy Commission,
Scripps Institute of Oceanography,
DOE ARCHIVES