Visual and radar studies of meteor head echoes

Details Visual and radar studies of meteor head echoes Visual and radar studies of meteor head echoes

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39..873j&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 39, June 1991, p. 873-878. NSERC-supported research.

Mathematics

Probability

21

Meteoroid Showers, Radar Echoes, Radio Meteors, Visual Observation, Aquarid Meteoroids, Atmospheric Ionization, Geminid Meteoroids, Orionid Meteoroids, Perseid Meteoroids

Scientific paper

Simultaneous visual and radar observations of several of the major meteor showers made over two decades have been analyzed to determine the conditions favorable for meteor head echoes. The probability of getting a head echo depends quite strongly on range, and somewhat less so on the brightness of the meteor. The scattering area associated with the head echo varies widely even for meteors of a given meteor shower and that the minimum radius of the equivalent reflecting sphere is of the order of 0.8 m. The distribution of the scattering areas associated with the head echo is approximately a truncated power law, whose index varies from shower to shower. An explanation based on the composite meteoroid model of Hawkes and Jones (1975) is proposed.

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