Periodic activity variations during the 1999 Leonid meteor storm in various data sets

Details Periodic activity variations during the 1999 Leonid meteor storm in various data sets Periodic activity variations during the 1999 Leonid meteor storm in various data sets

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.495..155r&link_type=abstract

In: Proceedings of the Meteoroids 2001 Conference, 6 - 10 August 2001, Kiruna, Sweden. Ed.: Barbara Warmbein. ESA SP-495, Noordw

Physics

2

Leonids, Meteors, Meteor Storms

Scientific paper

Observational data obtained during the 1999 Leonid meteor storm using intensified video meteor cameras as well as meteor radar systems at different locations distributed over distances of about 6000 km show significant rate fluctuations. Applying a wavelet analysis to the data it is shown that we see quasi-periodic variations with a typical period of 7 - 8 minutes. Given the geocentric velocity of the Leonid meteoroids, this hints at structures within the stream at a scale of about 30000 km along the Earth's passage, or about 9000 km vertical to the stream's plane. Collection of sufficient data samples within about 2 minutes to detect small-scale structures are only possible during meteor storms.

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