Observation of low frequency electromagnetic activity at 1000 km altitude
2001 (English)In: Annales Geophysicae, ISSN 0992-7689, E-ISSN 1432-0576, Vol. 19, 643-648 p.Article in journal (Refereed) Published
We present a statistical study of low frequency fluctuations of electric and magnetic fields, commonly interpreted as Alfvenic activity. The data base consists of six months of electric and magnetic field measurements by the Astrid-2 microsatellite. The occurrence of the events is studied with respect to the location and general activity. Large regions of broadband Alfvenic activity are persistently observed in the cusp/cleft and, during the periods of high geomagnetic activity, also in the pre-midnight sector of the auroral oval.
Place, publisher, year, edition, pages
2001. Vol. 19, 643-648 p.
ionosphere; auroral ionosphere; space plasma physics; waves and instabilities; magnetospheric physics; magnetosphere-ionosphere interactions
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-92661OAI: oai:DiVA.org:kth-92661DiVA: diva2:514230
NR 201408052012-04-072012-04-072012-04-07Bibliographically approved