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1
may not be due to Dr. Machta's mechanicm of pieferential
vctvatospheric drip in thece middie Laticuces.
In order to alleviate the abcuptrness of the ztep function-type
of assumption in
the modei proposed by the author, calculation.
wece done assumin,, that afte, the first montn, tropospneric
debris cpread »sut to cover a band much wider than in tne firct
mor.th and, in fact, woula cover an entire nemisphere.
In tnis
way, ctheoreticai fa Lout curves were obtained which chow the
j-*
-
total predicted faiiouc at variouw latitudes assuming the avezva.e
annua rainfal:.
It is always necessary to rememper that
particusarly avid places will necessarily iave low faitout aid
one whould realize that thic Leads to othex places having normal
vainfali having higher fallout.
This broau band tneoreticai
model may fit the observations somewnat better than tne rarrow
band model presented eaclier.
Figure 13 gives the iaticudinai profiie of totai failout
from the marrow bana step function calculation and Figure 14 che
bicad band fallout curve.
The important quescior. is whether
these predictions agree witii observations.
*. first and moct
4
sinvortant point is that the aata muct ve valid and not due to
locai fallout.
Mosc are for the United States and the question
ic whetner faliout is somewhat hi.h becauze of the proximity
of the Nevada tert site.
In Table III we compare United States
ana foreign coil strontium-90 content for tne year 1955, tae
“| DOM ARCHIVES .