GLOBAL DISTRIBUTION OF TRITIUM
1S Sooo
—
661
rTTtTy. 7... UT TS
=
=
S|
10°
5S_
OE
107
—=m
—
Woh
_
@ GOOSE BAY
o GROENNEDAL
4 BETHEL
5
7
4
Lrirs tit ip it srt ire tere p dr pe pate eis
Jan.—~ Dec.
Jan.— Dec.
Jan.— Dec.
1961
1962
19463
of
(a)
WETTT TTT TTT TT YT TTT TTT TTT TT TIT TTT TTS
T
4
ba
—_
1
35
f~
Ee
oF
—=
a
1
4
,0
=
10!
4
\
@ WHITEHORSE
Zz
© EDMONTON
a
Litpipt itr tlipyp rip peptide tet tt
Jan.- Dec.
Jan.— Dec.
Jan.— Dec.
1941
1962
(b)
1963
Fig. 8—Tritium fallout in northern Canada.
Similarly, Pretoria (at about 5000 ft) has shown relatively higher
tritium peaks than other South African sites, according to data of the
International Meteorological Institute. The New Zealand Institute of
Nuclear Science has provided data from Mount Cook that shows a
strong altitude effect. Snow at 6800 ft measured 40 T.U. in 1961, a
value much higher than values found in measurements at sea-level