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Electrodynamics of transpolar aurorae
KTH, Skolan för elektro- och systemteknik (EES), Rymd- och plasmafysik.
KTH, Skolan för elektro- och systemteknik (EES), Rymd- och plasmafysik.
2005 (engelsk)Inngår i: SOLAR WIND-MAGNETOSPHERE-IONOSPHERE DYNAMICS AND RADIATION MODELS, 2005, Vol. 36, nr 10, s. 1785-1790Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2005. Vol. 36, nr 10, s. 1785-1790
Serie
Advances in space research, ISSN 0273-1177
Emneord [en]
transpolar aurorae, field-aligned currents, high-latitude ionosphere, magnetosphere
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-36979DOI: 10.1016/j.asr.2004.06.022ISI: 000236277300006Scopus ID: 2-s2.0-24044502955OAI: oai:DiVA.org:kth-36979DiVA, id: diva2:435058
Konferanse
2nd World Space Congress/34th COSPAR Scientific Assembly Location: HOUSTON, TX Date: OCT 10-19, 2002
Merknad
QC 20110817Tilgjengelig fra: 2011-08-17 Laget: 2011-07-21 Sist oppdatert: 2011-08-17bibliografisk kontrollert

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Totalt: 53 treff
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