Dust particles in the atmosphere during the Leonid meteor showers of 1998 and 1999

Citation
N. Mateshvili et al., Dust particles in the atmosphere during the Leonid meteor showers of 1998 and 1999, EARTH MOON, 82-3, 2000, pp. 489-504
Citations number
43
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
EARTH MOON AND PLANETS
ISSN journal
0167-9295 → ACNP
Volume
82-3
Year of publication
2000
Pages
489 - 504
Database
ISI
SICI code
0167-9295(2000)82-3:<489:DPITAD>2.0.ZU;2-Q
Abstract
November twilight sounding experiments carried out in the Abastumani Astrop hysical Observatory including the Leonid showers of 1998 and 1999 provided an opportunity to obtain height distributions of dust of meteoric origin be tween 20 km to 140 km altitudes. The formation of several dust layers and t heir subsequent descent and dissipation were observed during these periods. The layers at 117 km and 54 km were estimated to consist of particles of 0 .01 mum and 21-23 mum radii respectively, according to settling velocities of these layers. The particle number density at 117 km altitude was estimat ed to be similar to 30 p cm(-)3.