the data points fall below the curve ~ that is, the indicated yield is
less than the actual yleld,
b. There 4s no lmown theoretical reason for a fourth-power
relation between period and yield, A third-power would ba expected, As
a matter-of-fact, a third-powor law curve does fit the data sanewhat better
than a fourth-power for yields lower then about 100 KT,
ce. The question has been raised several times whether the height
of burst affects the yleld estimate, Table 8 gives the pertinent data for
each U.S, shot, Table 9 presents the actual yield and the estimated yield
for shots within a series which appear most significant toward revealing
any altitude effects,
Underground,
For example, compare Jangle—Surface with Jangle-~
These shots had tha same yield, 1.3 KT, and wore within 10 days
of each other but one was on the surface and the other wes 17 feet undor
ground,
The estimated yield was 0,75 KT for each ~ about le—too low,
compare Buster Baker with dangle Surface,
Or,
These shots were 1.3 KT and 3.5 KT,
reupsatively, and Baker was at 1118 fest above ground,
Both yield estirates
were low — Baker by 1.5¢- and Surfece by 1,0. Finally, note the remarkable
similarity of Teapot Wasp 2 and HA, Both were 3,1 KT end they were fired
within 8 days of each other but Wasp 2 was at 600 feet end HA was at 36,000
feet. Both gave the sam estinated yield of 0.75 - about -2.0-—error. From
all of these comparisons it 4s concluded that the existing data sho.s no
effect of altitude on the acoustic yield estimates up to altitudes of 36,000
feet,
ds Another question frequently raised concerns the change in period
with distance from the explosion, Plots of period vs, distence for cach
shot are shown in Figures 3 through 9,
Within the liritations of the
méusurenents, no major trend is apparent,
e,
The question has also been raised regarding the applicability of
the period vs. yield curve for explosions at different locations. Data fron
U.S, shots is linited to Feveda end the Pacific Proving Ground. There is not
too mich overlap of data fron these locations since yields of Kevada shots
were all less than 60 KT and yields of PPG ahots were all
apy SRG, V.
up through the Castle seriea, About all that can be said at present is that
there is no obvious difference in results at Nevada and at PPG, Prelizina
data from Redwing support this conclusion for yields as
;
5,
Conclusions.
a. Figure 2 presents a single yield vs, period curve for yields
fron 5 KT to 20 MT, Even down to 1 KT the curve fits the data fairly well.
b.
Estimated errors in the high yield renge (500 KT and above)
based on the data fron shots of all yield probably err on the high side,
hote in Figure 2 that all of the points fall within the #1 standard error
renge for the higher yield shots,