Ki
1.434 OM
800 ~
600 =
400
200
KM.
2.442'4M
800+
600
400
200
KMS
600
400
200
2
3
4
6
8
10
@
«0M
2
3.64
6
8
10
14
uc
Fig. 3.5 - Ionospheric Records at Rongerik Following Shot 1 by 34 1/2
to 55 min, Showing Sporadic-E Development
59 min - a picture typical of this period showing a strong
lower boundary and considerable scatter above
1 hr 18 min - two principal levels of Es (also first indications of Fl at 200 to 300 km, 3 to 4 mc)
1 br 27 min =~ Es continues strong but Fl is "seen" through
it
1 hr 45 min - Es continues wmusual, (Fl ordinary and extraordinary are clear but "spread")
1 hr 59 min - Es less complicated but still unusual, (Fl
returns show continued turbulence)
2 br 14 min ~ Es still present, (Fl appears to be stra*i-
fied ~ it later developed into F2).
29
SECRET
,