A new southern high-latitude index

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 aur...

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Bibliographic Details
Published in:Annales Geophysicae
Main Authors: Ballatore, P., Maclennan, C. G., Engebretson, M. J., Candidi, M., Bitterly, J., Meng, C.-I., Burns, G.
Format: Article in Journal/Newspaper
Language:English
Published: Springer Verlag 1998
Subjects:
article
Verlagsveröffentlichung
Antarctic
Antarc*
Online Access:https://doi.org/10.1007/s00585-998-1589-1
https://noa.gwlb.de/receive/cop_mods_00037171
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00037125/angeo-16-1589-1998.pdf
https://angeo.copernicus.org/articles/16/1589/1998/angeo-16-1589-1998.pdf
Description
Summary: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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