oe eee i eneeare ~e Sem TAS IE TP, OT fs Chsom 's 3 ‘ Fige. 329 © Ionospheric Records at Okinawa Following Shot 5, Showing Possible Effects In Fige 3.29 is showm a sequence constituting an interesting - phenomenon that may have been an effect of Shot 5, If it were. its occurrence at about +7 hr 9 min indicates a velocity of 9.9 --/nxin. ~— apparently moving in horizontally (its maximum frequency is seen, in the third ionogram of Fig. 3.29, to be about 5.5 me for the ordinary . , It consisted of a sudden appearance of a region of higher im density, wave and 6.0 me for the extraordinary); this was followed by tho smoothing out of the cusp between the Fl ard Fz layers at 4.3 m (ordinary), this cusp being replaced by what had bsen the F2-layer ° ordinary critical frequency which dropped from 5.3 m to 4.5 m while the new, higher density region became the rm ‘on of maximum ion density of the F2 layer. 59 SECRET we ROT ee y .

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