Dynamo action in the ionosphere and motions of the magnetospheric plasma
| Autor: | S.-I. Akasofu, R.N. Dewitt |
|---|---|
| Rok vydání: | 1964 |
| Předmět: |
Field (physics)
Astrophysics::High Energy Astrophysical Phenomena Magnetosphere Conductivity Physics::Geophysics symbols.namesake Physics::Plasma Physics Electric field Physics Ionospheric dynamo region Astronomy and Astrophysics Plasma Geophysics Charged particle Action (physics) Magnetic field Space and Planetary Science Van Allen radiation belt Quantum electrodynamics Physics::Space Physics Dynamo theory symbols Astrophysics::Earth and Planetary Astrophysics Atomic physics Ionosphere Dynamo |
| Zdroj: | Planetary and Space Science. 12:1147-1156 |
| ISSN: | 0032-0633 |
| DOI: | 10.1016/0032-0633(64)90160-6 |
| Popis: | The generalized Pedersen conductivity is calculated by taking into account the mass motion of neutral particles in typical ionospheric conditions. It is shown that for electrostatic fields of periods more than 6 hr the generalized Pedersen conductivity is significantly less than the well-known Pedersen conductivity beyond 150 km in altitude. This suggests that the mass motion of neutral particles (namely a wind) is generated by the interaction between the charged particles and the neutral particles, resulting in dynamo action. The importance of this apparent reduction of the conductivity is discussed in the transmission of an electrostatic field from the magnetosphere (or from the dynamo effective region of the ionosphere) to the upper ionosphere. |
| Databáze: | OpenAIRE |
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