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2.4.2
Program 31, Microbarography
2.4.2.1 Project 31.1
The principal objectives of Project 31.1 were (1) to study the propa-
gation of pressure signals in air from large-scale detonations, and (2) to
measure microbarograph signals received through the ozonosphere and
ionosphere in tropical regions. These measurements determined the wind
direction, speed, and temperatures at extremely high altitudes; such information will help define the environment of the ICBM and other weapons.
Five dual-receiving stations equipped with Wiancko microbarographic
equipment were located on several islands from 20 to 250 miles from GZ.
Sensing heads of the microbarographs were located about one mile apart on
a radial line from the blast in order to determine the angle of pressure
incidence.
Preliminary observations of the records reveal that the desired information of wind velocity and temperatures at high altitudes was obtained on
12 shots.
A more specific evaluation awaits further study.
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