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Title:
Electrophonic sounds from large meteor fireballs
Authors:
Keay, Colin S. L.
Affiliation:
AA(Newcastle, University, Australia)
Publication:
Meteoritics (ISSN 0026-1114), vol. 27, no. 2, June 1992, p. 144-148. Research supported by Herzberg Institute for Astrophysics, Queen Mary and Westfield College, and SERC.
Publication Date:
06/1992
Category:
Geophysics
Origin:
STI
NASA/STI Keywords:
Bolides, Radio Emission, Sound Waves, Extremely Low Radio Frequencies, Light Curve, Very Low Frequencies
Bibliographic Code:
1992Metic..27..144K

Abstract

Anomalous sounds from large meteor fireballs, anomalous because they are audible simultaneously with the sighting, have been a matter for debate for over two centuries. Only a minority of observers perceive them. Ten years ago a viable physical explanation was developed (Keay, 1980) which accounts for the phenomenon in terms of ELF/VLF radiation from the fireball plasma being transduced into acoustic waves whenever appropriate objects happen to be in the vicinity of an observer. This explanation has now been verified observationally and supported by other evidence including the study of meteor fireball light curves reported here.

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