Radio observations of the auroral F-region
Abstract
Satellite and ground-based radio observations of the characteristics of the high-latitude F region are reviewed. Consideration is given to bottom and topside ionogram studies concerning the influence of the auroral oval on F region ionization, the trough in F region ionization between latitudes of approximately 60 and 75 deg, the slant sporadic E layer and lacuna, the anomalous behavior of the polar F layer in the magnetic noon sector, and the general morphology of the F layer and its diurnal variations at arctic and antarctic stations. Studies of irregularities in electron density in the high latitude region are examined which relate to the spatial and temporal distribution of radio scintillation intensity, scattering from the radar aurora, travelling ionospheric disturbances, and short-period oscillations. Incoherent scatter observations of particle precipitation events, magnetic substorms, auroral zone electric fields, conductivities and plasma flows made by the Chatanika facility are noted, and the proposed subject of investigation of the Eiscat installation are outlined.
- Publication:
-
Exploration of the Polar Upper Atmosphere
- Pub Date:
- 1981
- Bibcode:
- 1981epua.proc...67J
- Keywords:
-
- Auroral Zones;
- F Region;
- Ionospheric Sounding;
- Radio Probing;
- Incoherent Scattering;
- Ionospheric Electron Density;
- Temporal Distribution;
- Traveling Ionospheric Disturbances;
- Geophysics