756
Ogawa, Iwao
FALLOUT AND RICE CONTAMINATION IN JAPAN.
Bulietinof
Pace, F. C.
RADIOACTIVE FALLOUT FROM ATOMIC WEAPONS.
Behindthe
whee vee oe.
~
Scientists 1+, 35-8 (1958).
76.
Headlines 16, 1-12 (1956).
77.
Yt POW Oia 68 Were
Redicineand
Bioloey 26, 32-5 (1988),
awe
Obo, Piajio: Wekamatu, Chikanori; Riwatashi, Yoshihire;
Tamari, Taneniko; Nakae, Yosniteke; and Tadima, Daisaburo.
BADIOACTIVITY OF FISHES. IV. AHALYSIS OF FISH-ASHES.
Rafter, T. A.s and Fergusson, G. J.
ATOMIC BOMB EFFECT-RECENT INCREASE OF CARBON-]1% CONTENT
OFree ATMOSPHERE AND BIOSPHERE.
.
Science 126, 557-8
ol
An indication of increasing
content of the atmoSphere was found during a project of sampling atmo-
Spheric C02 in New Zealand in 1954.
The collection of
Samples was continued in order to determine whether the
enrichment was due to seasonal variation of C+", or an
enrichment of the atmosphere, cavsed by atomic explosions. The 9 samples, assayed since 1953, showed an
enrichment of 7.8 per cent with respect to the New
Zealand wond standard of 1953.
This walue, correla
for “industrial effect", (depletion of atmosphere C
mn
Ba(0OH)2 solution_to the atmosphere, such samples showed
an increase in cl+ specific activity of 4.9 + 0.6 per
cent between May 1955 and May 1957.
This increase was
detectable in leaves, trees, and grass from a location
from which samples had been previously assayed. By
using Libby's data (C.A. 50, 10522hn) to estimate fron
the C+* increase the total power of atomic weapons to
date, the +.8 per cent increase for the atmosphere
would account for 48 megaton of TNT equivalent of
fission for the southern hemisphere and greater for the
northern femisphere, where ail the atomic tests took
place.
From a comparison of the atmosphere Cl
specific activity with time in che 2 hemispheres, the
possible rade and mechanisa of mixing can be estimated.
mae re me
:
b,!
ete enn ee ee oeeeBE
phere. Other methods of sampling were used to verify
this result. One was to expose a tay, filled with
ae MOTO Red UMP OP Ome, fe
due to combustion of fossil fuel), was found to be 4.6
+ 0.5 per cent of the atmosphere of the southern hemis-