Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2014, Vol. 11, No. 2, pp. 277-287
Effect of meteoric activity of Leonid stream at the emission of the upper Earth's atmosphere
E.S. Komarova
1,2 , A.V. Mikhalev
1
1 Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, Russia
2 Irkutsk State University, Irkutsk, Russia
Meteoric astronomy sets perspective scientific tasks for researchers today. Interfering in Earth atmosphere, the meteoric substance causes a number of interesting phenomena, studying which we can explain processes in the upper atmosphere of Earth in more detail.
This paper considers the Earth's upper atmosphere emission (OI 557,7 nm, OH, Na) variations caused by the Leonids meteoroid flux. We have used airglow observations by the Institute of Solar-Terrestrial Physics SB RAS Geophysical Observatory. Interdiurnal variations in the OI 557,7 nm, OH, Na emission intensity are analyzed both for years of high activity of the Leonids meteoroid flux (1998 and 2001) and for years of its medium activity. Emission intensity of hydroxyl tends to increase by the time of the meteoric stream maximum, falling down over subsequent several days. We can reveal the increase of sodium during action of a meteoric stream.
We discuss possible reasons and mechanisms for the observed emission intensity variations in the periods considered.
Keywords: emission, glow, upper atmosphere, meteor, meteor activity, meteoric stream, Leonids.
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