Magnetospheric convection and the high-latitudeF2ionosphere
| Autor: | W. C. Knudsen |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
Convection
Physics Atmospheric Science Ecology Paleontology Soil Science Electron precipitation Forestry Plasma Aquatic Science Oceanography Atmospheric sciences Geophysics Space and Planetary Science Geochemistry and Petrology Ionization Electric field Earth and Planetary Sciences (miscellaneous) Electron temperature Polar Ionosphere Atomic physics Earth-Surface Processes Water Science and Technology |
| Zdroj: | Journal of Geophysical Research. 79:1046-1055 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/ja079i007p01046 |
| Popis: | Behavior of the polar ionospheric F layer as it is convected through the cleft, over the polar cap, and through the nightside F layer trough zone is investigated. Passage through the cleft adds approximately 200,000 ions per cu cm in the vicinity of the F2 peak and redistributes the ionization above approximately 400-km altitude to conform with an increased electron temperature. The redistribution of ionization above 400-km altitude forms the 'averaged' plasma ring seen at 1000-km altitude. The F layer is also raised by approximately 20 km in altitude by the convection electric field. The time required for passage across the polar cap (25 deg) is about the same as that required for the F layer peak concentration to decay by e. The F layer response to passage through the nightside soft electron precipitation zone should be similar to but less than its response to passage through the cleft. |
| Databáze: | OpenAIRE |
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