A new southern high-latitude index

• Main Authors: Ballatore, P., Maclennan, C. G., Engebretson, M. J., Candidi, M., Bitterly, J., Meng, C.-I., Burns, G.
• Other Authors: Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), Bell Laboratories, Lucent Technologies, Department of Physics Minneapolis, Augsburg College, Institut de physique du globe de Strasbourg (IPGS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Johns Hopkins University Applied Physics Laboratory Laurel, MD (APL), Australian Antarctic Division (AAD), Australian Government, Department of the Environment and Energy
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 1998
• Subjects: [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; Antarctic; Antarc*
• Online Access: https://hal.archives-ouvertes.fr/hal-00329109; https://hal.archives-ouvertes.fr/hal-00329109/document; https://hal.archives-ouvertes.fr/hal-00329109/file/angeo-16-1589-1998.pdf

International audience 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.