NDLI: Vortex motions and transportation of fine disperse dust particles in the ionosphere

Content Provider	Springer Nature Link
Author	Besedina, Yu. N. Popel, S. I. Shukla, P. K.
Copyright Year	2009
Abstract	Redistribution of dust particles in the ionosphere as a result of vortical motions is discussed. The following possibilities are studied: capture and evolution of dust particles in acoustic-gravitational (AG) vortices, formation of dust vortices as a result of involving a great number of dust particles into vortex motions, and formation of vertical dust flows (streamers). It is shown that excitation of AG-vortices at altitudes of 110–130 km as a result of development of AG-wave instability, associated with non-zero balance of heat fluxes, owing to solar radiation, water vapors condensation, infrared emission of the atmosphere, and thermal conductivity, leads to a substantial transportation of dust particles and their mixing at altitudes of 110–120 km. Layers of dust particles in the ionosphere with a thickness of about a kilometer, forming at altitudes less than 120 km, distribute within the region of existence of AG-vortical structures. As a result, at altitudes of 110–120 km, dust vortices can appear, and transportation of particles up to altitudes of 130 km becomes possible. One of the ways of transportation of dust particles in the ionosphere is vertical flows (streamers), which are generated by dust vortices as a result of development of parametric instability.
Starting Page	1407
Ending Page	1410
Page Count	4
File Format	PDF
ISSN	1028334X
Journal	Doklady Earth Sciences
Volume Number	429
Issue Number	1
e-ISSN	15318354
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2009-12-11
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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