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ILLUSTRATIONS
21
Map Showing Location of Stations and Approximate
301
Minimum Frequency Detected at Rongerik for Day of
302
Distances from Bikini
.
2.
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Shot 4, Compared with Normal Values . . . » oe ee 2
Minimum Frequency Detected at Site Elmer for Day of
Shot hy Compared with Normal Values
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33
Highest Frequency of Sporadic-E Reflections at
Rongerik Following Shots 1 through 5, Compared
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Xonospheric Record for 0817 hours on a Normal Day,
305
Ionospheric Records at Rongerik Following Shot 1 by
3.6
Ionospheric Records at Rongerik Following Shot 1 by
59 min to 2 hr 14 min, Showing Unusual Sporadic-E
307
Ionospheric Records at Rongerik Following Shot 2 by
39 min to 2 hr 23 min, Showing Sporadic-E Effects . ..
Ionogpheric Records at Rongerix Following Shot 5 by
38
309
with Normal Values
.
2.
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Showing Typical SporadiceE and FeLayer Traces
27
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28
34 1/2 to 55 min, Showing Sporadic-E Development
.. .
29
and Fl Development
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at Rongerik . ee
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40 min to 2 br 7 min, Showing Unusual Sporadic-E
Effects
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F2eLayer Virtual Height and Critical Frequency at
Rongerik Following Shots J] 1d 2 and at Bikini
oe 6
Following Mike Shot (Opera.ion IVY), Compared
with Normal Values
«2.
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310 Ionospheric Records at Rongerik Folicwing Shot 1
(left) and Shot 2 (right), Showing Earliest F2 Returns
at about 2 1/2 hr after each shot and also F2 Returns
from Several Levels about 3 1/4 hr after each shot
3-11
Ionospheric Records at Rongerik Folloring Shot 1
3012
& Posstple Electron-Density Dietribution Above
..
(left) and Shot 2 (right) by about 3 1/2 to 4 hr,
Showing Stratification of F2 into Two Distinct Layers .
Rongerik at Shot 2 Plus 3 hr 49 min, Compared with
a
Hypothetical Normal Distribution
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3.13 Ionospheric Records at Rongerik Following Shot 1 by
3 br 32 min to 3 hr 50 min, Shcwing Decreasing
301k
23
Virtual Height of the F2 Layer 2. eccce veces
Ionospheric Records at Rongerik Following Shot 2 by
3 br 40 min to 4 br, Showing Decreasing Virtual
Height of the F2 Layer
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F2eLayer Virtual Height and Critical Frequency at
Rongerik Following Shot 4, Compared with Maximum,
Miniman, and Median Normal Values
13
_ SECRET
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8
31