under chis line of reasonisg ao cctectabie Slas€ wave wouls resuic from tais
shot.
2udsoat develsped a aolel for a shock generated in the ci:mosphere wtere
ultraviolet ctadiatica is compictely absorbed im Che osooe iaver.
He reascoed
that this sechanisa could generatea plane-wave shock waica eculd travel to
the ground with little divergence
fe was speculated further t
oe Concentraticas of ssune 320 Glese
higher altitudes could be burmed out by high radiatioa iztesities and made ineffective as a blast source, thereby lowering the overpressure predicted by
soze indefinite factor.
Arrival cine at @ for sound generated in the ozone
layer would be between 7O and 160 seconds, as compared with wer 200 seconds
for sound generated near the burst.
Hydrodynaaic shock generation in the vicinity of the ultrahigh-altitue
bomb was estinated dy Sethe* to give pressures which would Se the same as those
from one-fourth the yield of a similar detonation at sea lewel and at the sasze
distance.
Consideration was given to a possible third wave, difcerent from that
foraed in the ozone layer and from that produced by kydrodynanic oocions at
the burst point.
The omchanisa was that of absorption of X-rays in air at
some distance from the burst.
If a pressure gradient could be produced in
this way, a wave might start at sooething like 2 or 3 kilometers froa the
burst and outrun the sain hydrodynasic blast to the earth.
Although no effort
was made to predice its probable strength, because of the possibility of derec-
tion, it was moted that such a save should precede the wave produced by bomb
material sotion by about 2 to + seconds.
No such wave could be produced by a
shot at sea level density, sizce the X-ray rean free path £3 less than ore
oeter, and any disturbance sould coalesce with the hydrodveanic shock.
Signal prediccions for French Frigate Shoals and Honolulu sere sade wnly
Co Che extent necessary for establishing sicr-barograph set ranses.
Onl. vers
small asplituce sounds sere axpected because of the icnospicric duct, bet set
ranges sere fixed to contain signal a=plitccdes following tre
cne-fourth-.ield
bupotsesis of Sethe” with ? = gl scaling, found expiricali. trea meaeared
maxicus mplitete,
.
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