Audible fireballs and geophysical electrophonics

Details Audible fireballs and geophysical electrophonics Audible fireballs and geophysical electrophonics

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasau..11...12k&link_type=abstract

Astronomical Society of Australia, Proceedings (ISSN 0066-9997), vol. 11, no. 1, p. 12-15

Astronomy and Astrophysics

Astrophysics

Audio Frequencies, Bolides, Electromagnetic Wave Transmission, Meteor Trails, Plasma Turbulence, Astrophysics, Geophysics, Mathematical Models

Scientific paper

The long-standing enigma of audible sound production simultaneous with the distant flight of large meteor fireballs is becoming increasingly well understood. Utilising Keay's model linking the production of Extremely Low Frequency (ELF)/Very Low Frequency (VLF) electromagnetic radiation with turbulence in the fireball's plasma trail, it has proved possible to adapt Ceplecha's fireball model to include the criteria for turbulence and the consequent production of electrophonic sounds, yielding an excellent match with observations. It is becoming apparent that other geophysical phenomena also have the capacity to produce electrophonic sounds. These include aurorae, lightning and earthquakes.

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