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Science 27 April 1979:
Vol. 204. no. 4391, pp. 371 - 375
DOI: 10.1126/science.204.4391.371
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Articles

Brontides: Natural Explosive Noises

Thomas Gold 1 and Steven Soter 1

1 Director and Steven Soter is a research associate at the Center for Radiophysics and Space Research, Cornell University, Ithaca, New York 14853

Episodes of explosive noises of natural origin, or brontides, have been well documented, often in association with seismic activity and in a few cases as precursors to major earthquakes. Ground-to-air acoustic transmission from shallow earthquakes can account for many of these episodes, but not for all, and other causes, such as the sudden eruption of gas from high-pressure sources in the ground may at times have been responsible. Confusion with distant thunder or artillery at times of anomalous sound propagation complicates the analysis, and more recently the greatly increased frequency of artificial explosive noises and sonic booms has tended to mask the recognition of natural brontides.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Natural Explosive Noises.
D. J. Stierman and D. J. STIERMAN (1981)
Science 212, 1296-1297
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Earthquake sounds and animal cues; some field observations.
D. J. STIERMAN (1980)
Bulletin of the Seismological Society of America 70, 639-643
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Science. ISSN 0036-8075 (print), 1095-9203 (online)