Interaction of the lower thermosphere with the solid component of the interplanetary medium
| Autor: | A. V. Manochina, V.B. Shushkova, V.N. Lebedinets |
|---|---|
| Rok vydání: | 1973 |
| Předmět: |
Meteor (satellite)
Physics Meteoroid Interplanetary medium Astronomy Astronomy and Astrophysics Kinetic energy Physics::History of Physics Computational physics Atmosphere Space and Planetary Science Thermal radiation Ionization Astrophysics::Earth and Planetary Astrophysics Thermosphere Physics::Atmospheric and Oceanic Physics |
| Zdroj: | Planetary and Space Science. 21:1317-1332 |
| ISSN: | 0032-0633 |
| DOI: | 10.1016/0032-0633(73)90224-9 |
| Popis: | We consider in this paper the motion of small meteoroids near to the Earth taking into account gravitation, acceleration and heating of particles in the upper atmosphere, and also the processes of thermal radiation, sputtering and evaporation. It is concluded that during an encounter of the Earth with a meteor stream a dust cloud can be formed only at very small geocentric velocities of the particles. We also carry out calculation of the ion-formation rate in the atmosphere due to the collision of ablated meteor atoms and air molecules reflected from a meteoroid with air molecules encountered. Meteor ionization makes the contribution necessary to the maintenance of the high E-region ionization. During annual meteor showers the rate of meteor ion-formation increases by not more than four times. Additional night sources of ionization of air molecules influence the relative number of atmospheric and meteor ions in the E-region. The contribution of the kinetic energy of meteor matter to the heating of the upper atmosphere is evaluated. |
| Databáze: | OpenAIRE |
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