fg
- Z) -
e.-
aa
trop sphecic failsut will ve minimal and taking the spring i950
daca we ovcain ax averaz,e of 2.6 mii_icuvies pez cquare mie
at that time.
Doing tne same thing in i956 we obtain 6.5
miilicuries per square mite for a aifferer:ce of 3.7 miilicuries
pec square mile o¢ an average faiiout cate of 1.u milsicucies
per square mile per year.
Takin, the mean -tratospheric
inventory from Figure 6 fox the year 1957 of about 24 megatone
or 12 miliicuries pex square mile we calculate the stratospheric
vecidence time which agrees with this.
The recult is 5.5 years
wiiieh number will obvioucty agree we.i with the data vhown in
Fivure i5.
The difference Setween the United Ctates and foreizn
coliections in the VJiven latitude ave welt iiluctrated by the
monthniy cain data for July, Auguct ana September, 1957. __.
Tne avera.ze of Unite: Crates ctaciois for those three montis wac
we £ .25 miliicuries per square miie while the average for
fovelsi stations is, the came Latituae was 1.3 + 4.zZ, a ain
It ic to be
ayreein,; witn te soi. data chown im Table III.
hopeu that we wiiit scou have anaiyves of the 1955 coil coilectione
pecauce it ic clear that tne:e data ave of extxeme importance
deciding about tne meciianiim of ctratospheric falzout.
Tue /shean Protect, the proiect for samplin, the stra
cpnesce by means of val.oone and fistecs continues out analytical
’
>
Lifficultie. have calc zsrxne uoudt on tue vaiidaity of the data.
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