102
om
|
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—
a
are
—
_
—
10! L
—_
E
=
—
=
a
—
>
—
—
a
=
4
=x
+
=
=
_ 10° _—_
<
—
=
—
—
——
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i
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A
=
ran
Q
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PREDICTED
—
-
™
107!
OBSERVED,
—
=
}—
—
.
Fig.
7—The caiculated and ob-
served gamma dose rate at H+
1 hr as a function of distance
along the hot line of the Danny
Boy pattern (diagnostic calcula—~
tion).
C
“|
1072
0
|
L
l
10
20
30
40
DISTANCE, NAUTICAL MILES
pattern breadth at 25 miles downwind is about 7 miles; the observedpattern breadth at 25 miles downwind is 5.5 miles. It should be noted
that the closure of the isodose-rate line of 10-4 r/hr at H+ 1 hr in the
plotted pattern is artificial and is the result of the logic used for the
computer plotting rather than of the logic used for the cratering fallout
model, All isodose-rate lines will apparently be closed at the downwind
edge of the pattern if computed dose-rate informationis insufficient for
their appropriate extension downwind. The observed (H + 1)~hr gamma-
dose-rate pattern for Danny Boy is shown inFig. 9 for comparison with
the computer-plotted pattern.
INDEPENDENT TESTS OF THE MODEL
An independent test calculation of the cratering fallout model (calibrated on Sedan) was performed by using data from the Teapot ESS