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| Titel |
Multistation digisonde observations of equatorial spread F in South America |
| VerfasserIn |
B. W. Reinisch, M. Abdu, I. Batista, G. S. Sales, G. Khmyrov, T. A. Bullett, J. Chau, V. Rios |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 22, no. 9 ; Nr. 22, no. 9 (2004-09-23), S.3145-3153 |
| Datensatznummer |
250014996
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| Publikation (Nr.) |
 copernicus.org/angeo-22-3145-2004.pdf |
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| Zusammenfassung |
| Directional ionogram and F-region drift observations were conducted at seven
digisonde stations in South America during the COPEX campaign from October
to December 2002. Five stations in Brazil, one in Argentina, and one in Peru,
monitored the ionosphere across the continent to study the onset and
development of F-region density depletions that cause equatorial spread F
(ESF). New ionosonde techniques quantitatively describe the prereversal
uplifting of the F layer at the magnetic equator and the eastward motion of
the depletions over the stations. Three of the Brazilian stations were
located along a field line with a 350-km apex over the equator to
investigate the relation of the occurrence of ESF and the presence of
sporadic E-layers at the two E-region intersections of the field line. No
simple correlation was found. |
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