It is seen that the U. S. map gives data consistent to better than +0. 1
percent, while the Japanese chart is internally inconsistent to something
like 1.0 percent.
Scaling on the chart between known islands which retain the same shape
on both charts, we get the following ranges in feet:
_
+
twee
North end, Parry - South end, Engebi
100,300
100, 100
-0.2%
|
North end, Parry - Rigili
South edge, Eniwetok -center Elugelab
102, 700
128,700
102,900
127,900
+0.2%
- 0.6%
|
Parry tower - Elugelab
114, 050
113,950
7 9.1%
12.
Meteorological Data
The U.S. Air Force, in support of the AEC, will fly weather -sounding
balloons shortly before shot time, from Eniwetok Island.
These balloons
will radio to ground receivers data as to the air pressure, temperature, and
dew point as functions of altitude.
Although Eniwetok Island is more than
twenty miles from the point of burst, it is certain that the meteorological
data so obtained represent co:ditions above the bomb within the prescribed
limits of error.
In order that the U. N. Observers may have a check-reading as to air
density, the USAEC will provide a mercury barometer anda sling-psychrom-
eter so that these data may be obtained at ground level on Parry Island.
The determination of air density from the given raw data is treated ~
in the literature; tables will be provided to help in the reduction of data.
13.
Films
Photographyof the Pinon shot will be accomplished by meansof special emulsions manufactured by the Eastman Kodak Company.
These films
are Similar to commercial Microfile film, used as a high-contrast, high-
resolution material in microfilming documents and records.
For the
purposes of fireball photography the special Microfile is provided with a
Panchromatic, rather than Orthochromatic, spectral response. This
film, identified as Nike S.O. 918", has a response from about 0. 4 to 0. 7.
microns,
The emulsion is very thin, and is coated by machine on standard
acetate base; it can also be obtained on glass plates.
-19.-