Abstract
The nuclear explosions in the atmosphere produce disturbances in the ionosphere on a world-wide scale. These may be observed at large distances (more than 1500 km) from the explosion point and from its magnetic conjugate.(a)A series of wave oscillations is observed propagating from the explosion point. The velocity is of several hundred m/s, and the period at about 40–90 mn. The maximum electron density oscillates assuming quite abnormal values in the course of the alterations.These effects may be interpreted in terms of a mechanical wave, or a series of waves, which propagate at preferred altitudes.(b)From the measurements of atmospheric noise (27 kHz) an anomaly is observed, which may be explained by the trapped particles.
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