Letter | Published:

Microbarograph Records from the Russian Large Nuclear Explosions

Nature volume 192, page 857 (02 December 1961) | Download Citation

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Abstract

DURING the recent series of Russian atomic weapon tests, microbarographs were operated at this Establishment. The instruments used were purely mechanical devices having limited frequency response. Excellent records were obtained from several of the larger firings at Novaya Zemlya and particularly from the 50-megaton firing of October 30. Taking the origin time as 08.33 hr. from a study of the seismic signal, we saw the start of the first characteristic microbarograph record (Fig. 1a) 3 hr. 11 min. later at 11.44 hr. on October 30; subsequent to this, we obtained clear signals at approximately 16.40 hr. on October 31 (Fig. 1b); 00.10 hr. on November 1 (Fig. 1c); and 12.40 hr. on November 2 (Fig. 1e). We looked for a signal at around 05.10 hr. on November 2 but could not see one against the background (Fig. 1d).

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References

  1. 1.

    , , and , Phil. Trans. Roy. Soc., A, No. 1011, 275 (1960).

  2. 2.

    , , and , Bull. Seism. Soc. Amer., 51, 2, 247 (1961).

  3. 3.

    Symond G. J. (ed.), The Eruption of Krakatoa and Subsequent Phenomena (Trubner and Co., London, 1888).

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Affiliations

  1. Atomic Weapons Research Establishment, Foulness, Southend-on-Sea, Essex.

    • E. W. CARPENTER
    • , G. HARWOOD
    •  & T. WHITESIDE

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https://doi.org/10.1038/192857a0

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