_
Thus *L represerts the reduction of the radiation density above
the surface due to the dowrward @iffusion of the fission prodwts,
If AET>A”, then a god appracimstion tem, is
The largerthe value of £, the better in this approximtion,
.
' The question now arises as to the proper value of K, The
jJarger K, the mre rapid the diffusion, and the less the valu: of %, .
the least
m The
Referring to *The Oceans*by Sverdrup, Johnson and Fl
value of K ever measured was in Danish Waters at depths
value of K ranged from 0.@ up te 0.6, ‘These waters are of great
and moderate currents, The witer is greatly stabilised by
ty gradient, and the surface wmter is nearly fresh.
a saline
4 mich more comparable case for our purposes is found in the Bay
of Biscay « Here the depth ef wter ms 100 meters and the values of
Krange from 2 to 16. It 4s therefore considered that Ke
lis
|
FesMigeetthe MasSetalee vate St
d
nigntiy onthetlghskis, Swstibcting
———-¥sT
“¥
;
1
:
©
0.25 5 OAZ7 2 O12
aso: 0.337
1h
§ Oth
2 010
1 0.35
+ 2h 10625
¢ 100
3634 12,00 3 G20
¢ 0.50
t 0420
10,20 10.50 1 Oth
3: GO
: be12,07 e005 O05
be
:
:
_t
that the effect of She eddy ditfasion at ‘two
radioactivity hy a factor 10, At four hours,
i ot
: Bek
sinistic value that 0,001 of the fission e@ sea over 2 circle of radius 1000 fest,
i
i
>,
10,9372 0.275 + 2h
> Ol, +: 200 1010120
=
¥e8
a
he
cr
J rf
tS
9: 20
Tt will be
COPIED/DOE 3
a
20
$0
LANL RG/%..:
rok
e value, amd
en, as it moves with the tide will be ~