LATITUDINAL AND DIURNAL VARIATIONS OF THE IONOSPHERIC ELECTRON CONTENT NEAR THE AURORAL ZONE IN WINTER.
KIRUNA GEOPHYSICAL OBSERVATORY (SWEDEN)
Pagination or Media Count:
The analysis of three months observations of Faraday rotation observed on S-66 transmissions made at Kiruna Geophysical Observatory 67.8 degrees N, 20.3 degrees E is presented. The ionospheric electron content along the subionospheric path of the satellite was computed for almost 400 transits. Also effective slab thicknesses were calculated using critical frequency values from 6 Scandinavian stations, covering an interval of 10 degrees of latitude. Latitudinal and diurnal variations of the ionospheric electron content and the effective thickness were studied. The most striking feature of the latitudinal variation of the total electron content was a distinct minimum at the southern boundary of the auroral zone during winter night-time. This minimum coincides with the trough observed by topside sounding satellites. Author
- Atmospheric Physics