Reference : IMAGE-FUV multispectral observation of theta auroras.
Scientific congresses and symposiums : Unpublished conference
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/8886
IMAGE-FUV multispectral observation of theta auroras.
English
Hubert, Benoît mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Gérard, Jean-Claude mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Mende, S. B. mailto [S.S.L., Centennial Drive at Grizzly Peak Blvd., Berkeley, CA 94720-7450 United States;]
Frey, H. U. mailto [S.S.L., Centennial Drive at Grizzly Peak Blvd., Berkeley, CA 94720-7450 United States;]
Immel, T. J. mailto [S.S.L., Centennial Drive at Grizzly Peak Blvd., Berkeley, CA 94720-7450 United States;]
Meurant, M. mailto [L.P.A.P. (Ulg), Institut d'Astrophysique et Géophysique, Allée du 6 août, 17, Liège, 4000 Belgium;]
Coumans, Valérie mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
1-May-2002
No
No
International
AGU Spring meeting
Mai 2002
[en] 2704 Auroral phenomena (2407) ; 2776 Polar cap phenomena ; 2788 Storms and substorms
[en] The theta aurora is an auroral structure presenting a sun-aligned transpolar arc. Five different dynamic evolution of the transpolar arcs are known, some of them being symmetrical to each other, leaving three basically different types of transpolar auroral features. The theta aurora was previously studied with in-situ particles detectors onboard polar orbiting satellites and by ultraviolet imagers. Previous imaging works focused on the electron aurora. We use the FUV imagers onboard the IMAGE spacecraft to study separately the proton and electron contributions to the transpolar arcs at the global scale. The imagers of the IMAGE-FUV experiment remotely sense the electron aurora with the WIC and SI13 imagers observing respectively the N[SUB]2[/SUB]-LBH and OI-135.6 nm emission, while the SI12 spectrographic imager measures the Doppler-shifted Lyman-ë± emission which is solely due to the auroral proton precipitation. The three different types of transpolar aurora will be analyzed using the IMAGE-FUV imagers. In particular, the relative contribution of proton and electron to the excitation of the theta aurora will be presented.
Researchers ; Professionals
http://hdl.handle.net/2268/8886
http://adsabs.harvard.edu/abs/2002AGUSMSM41C..04H

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