Mathematics – Logic
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..281j&link_type=abstract
In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 281-284 (SEE N93-19113 06-90)
Mathematics
Logic
Geminid Meteoroids, Mesosphere, Meteor Trails, Meteoroid Showers, Meteoroids, Meteorological Radar, Radar Beams, Stratosphere, Troposphere, Ablation, Confinement, Curvature, Diffusion, Height, Zenith
Scientific paper
The observation of meteor trails by a vertical mesosphere - stratosphere - troposphere (MST) radar beam has the advantage of good height resolution and an approximate knowledge of the zenith angle since the trails are horizontal or near-horizontal. An extension of the ablation theory of meteors was developed for near horizontal trails which takes into account the curvature of the earth. Observations of the Geminid meteor shower by MST radar reveal the 'diffusion heights' to be in fair agreement with the true height, but with some discrepancies that can amount to 4 km. The true heights are almost entirely confined to the range 87-91 km, although the upper limit is attributed to the coherent integration time of the existing MST radar processing.
Jones William
Kingsley S. P.
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