Electrodynamics of transpolar aurorae
2005 (English)In: SOLAR WIND-MAGNETOSPHERE-IONOSPHERE DYNAMICS AND RADIATION MODELS, 2005, Vol. 36, no 10, 1785-1790 p.Conference paper (Refereed)
Polar UV image and Astrid-2 electric and magnetic field data are used to study the evolution of the electrodynamical configuration of the high-latitude ionosphere during a 5-h transpolar arc event. During the course of the event we observe Sunward convection in narrow regions associated with pairs Of upward and downward transpolar are-related field-aligned currents. We also observe Sunward convection deriving from more remotely located field-aligned currents as well as stagnant convection in the centre of the polar region associated with a decoupling of the dawn and dusk side current systems. Schematic pictures of the current closure and convective flows are presented for a variety Of configurations. The different states evolve naturally into each other and do not represent fundamentally different magnetospheric configurations.
Place, publisher, year, edition, pages
2005. Vol. 36, no 10, 1785-1790 p.
, Advances in space research, ISSN 0273-1177
transpolar aurorae, field-aligned currents, high-latitude ionosphere, magnetosphere
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-36979DOI: 10.1016/j.asr.2004.06.022ISI: 000236277300006ScopusID: 2-s2.0-24044502955OAI: oai:DiVA.org:kth-36979DiVA: diva2:435058
2nd World Space Congress/34th COSPAR Scientific Assembly Location: HOUSTON, TX Date: OCT 10-19, 2002
QC 201108172011-08-172011-07-212011-08-17Bibliographically approved