For purposes of comparison, an ionogram for a normal day is
given in Fig. 3.4, showing a typical sporadic-E trace from 2.4 to 4 m
at 115 kn (intermittent above 3.3 m).
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Figs 3.4 = Ionospheric Record for 0817 hours on a Normal Day, Showing
Typical Sporadic-E and Felayer Traces at Rongerik
To illustrate the unusual nature of the sporadic-E echoes ob-
served at Rongerik following the shots, Figs. 3.5 through 3.8 are presented, each arranged to be read from top to bottm, starting at the
left, with the elapsed time from zero indicated in hours and minutes.
A brief description follors:
Shot 1 plus (see Figs. 3.5 and 3.6)
34 1/2 min - first visible echo of any kind after the shot;
Es at 110 kn
.
42 1/2 min - Es at two levels = 110 and 150 km
46 min - Es (at two levels) goes above 8 me
47 nin - Es at several levels
52 min « further development of multiple Es
55 min = more scattering
28
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