Variations in the strength of the Sq current system
The strength of the Sq current system is measured by taking the difference between magnetic variations on either side of the current system focus. This is carried out for several longitude sectors. A distinct semiannual variation is sometimes found but its incidence varies with longitude, local...
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1995-06-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/13/627/1995/angeo-13-627-1995.pdf |
| Summary: | The strength of the Sq current system is
measured by taking the difference between magnetic variations on either side of
the current system focus. This is carried out for several longitude sectors. A
distinct semiannual variation is sometimes found but its incidence varies with
longitude, local time and hemisphere. Other semiannual effects in the ionosphere
are reviewed and the possibility of a diurnal modulation of the strength of the
12-h tide is suggested. |
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| ISSN: | 0992-7689 1432-0576 |