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Station 123.03 was located 16,140 feet from GZ on a reef between
Charlie and Dog. There was a low high tide at shot time, again leaving
most of the gage mount above the water level.
The high horizontal or radial acceleration was, prohably produced
through the pendulum action of the gage and gage mount. The
accelerometer element vibrated at a frequency probably due to the
shock wave, This vibration is very clearly impressed on the frequency
pattern of the gage mount, which is predominant. Again the vertical
acceleration is probably a truer indication of the applied acceleration.
The coral reef once more acted as a baffle to the gage. The shock wave
was again impresced in a coincidental plane with the vert‘cal axis of
the gage.
~
Shot 4
Station 122.17
Gage did not run until shock wave arrived. If there are any
acceleration records they are indistinguishable from the resulting
hash,during the process of putting the elements in place.
‘Station 122.19
Ho vertical acceleration record.
Horizontal
Acceleration
mge
I (0-30 gts)
Deflection in_mils
let.“peakme
end. peg}5
drd peak
Acceleration in es)
lst pe
and peak
3rd peak
5 g's
: g's
iB g's
Frequency
LNot readable
Duration
Pressure
1.5 mils
2 mils
2 mils
'
3.33 seconds
10.5 ps
bl
Station 122.19 was located 5, 420'feet from GZ in the clearing on
Uncle,
Ls
The acceleration indicated on this daze is acceptable within the
limits expected.
‘
Station 122.20
t
Rorizontal
Acceleration
Vertical
Accelsration
Element and range
Deflection in mils
L (0-20 g's)
i D\(-15 gts)
Duration
1.66 seconds
Acceleration in g's
lg
Frequency
1.75 cps
Pressure
7.4 pat
mils
bh gts
°3:85 seconds
Not readable