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
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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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