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| Titel |
A new southern high-latitude index |
| VerfasserIn |
P. Ballatore, C. G. Maclennan, M. J. Engebretson, M. Candidi, J. Bitterly, C.-I. Meng, G. Burns |
| 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 ; 16, no. 12 ; Nr. 16, no. 12, S.1589-1598 |
| Datensatznummer |
250013597
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| Publikation (Nr.) |
 copernicus.org/angeo-16-1589-1998.pdf |
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| Zusammenfassung |
We have developed and examined a new regional
geomagnetic index AES-80, defined similarly to the classical auroral electrojet
AE index, using data from five Antarctic stations located at corrected
geomagnetic latitudes about 80 °S. Because only sparse ground-based information
can be derived from auroral latitudes in the Southern Hemisphere, and because no
index comparable to AE can be constructed from locations in the south, the
possibility of using AES-80 as a measure of high latitudes and polar cap
activity is investigated. As a global average activity level indicator, it is
found that in general AES-80 gives results rather similar to the classical AE
index. However AES-80 provides a more robust measure of the occurrence of
high-latitude geomagnetic activity.
Key words. Magnetospheric physics (auroral phenomena;
polar cap phenomena). |
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