Abstract
This study attempts to demonstrate changes in the ionospheric F1-region daytime ionization during geomagnetic storms. The F1-region is explored using available data from several European middle latitude and lower latitude observatories and a set of geomagnetic storms encompassing a range of seasons and solar activity levels. The results of analysis suggest systematic seasonal and partly latitudinal differences in the F1-region response to geomagnetic storm. The pattern of the response of the F1-region at higher middle latitudes, a decrease in electron density, does not depend on the type of response of the F2-region and on solar activity. A brief interpretation of these findings is presented.
Original language | English |
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Pages (from-to) | 1007-1021 |
Number of pages | 15 |
Journal | Annales Geophysicae |
Volume | 20 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2002 |
Externally published | Yes |
Keywords
- Ionosphere (ionospheric disturbances; midlatitude ionosphere