Abstract
THE heavy nuclear explosion on October 30, 1961, at 8.33.33 G.M.T. at a distance of 1,160 km. in Novaya Zemlya (presumably at tropospheric heights) was recorded at Sodankylä by means of a seismograph, a microbarograph, a magnetograph, and a vertical incidence ionosonde. The deflexion of the microbarograph took place at 9.42 G.M.T. with an amplitude of about ± 1 mb. The ionosonde showed a sudden, heavy disturbance in the E and F regions at 9 G.M.T., that is, 42 min. before the deflexion of the microbarograph (Fig. 1).
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References
Mitra, S. K., The Upper Atmosphere, second ed., 51 (Asiatic Soc., Calcutta, 1952).
Newell, jun., H. E., in Physics of the Upper Atmosphere, edit. by Ratcliffe, J. A., 83 (Academic Press, New York and London, 1960).
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ROSE, G., OKSMAN, J. & KATAJA, E. Round-the-World Sound Waves produced by the Nuclear Explosion on October 30, 1961, and their Effect on the Ionosphere at Sodankylä. Nature 192, 1173–1174 (1961). https://doi.org/10.1038/1921173a0
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DOI: https://doi.org/10.1038/1921173a0
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