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Titolo:
Observational evidence for a potential relationship between visible auroral arcs and ion beams - A case study
Autore:
Marghitu, O; Blagau, A; Vogt, J; Klecker, B; Haerendel, G; Mobius, E; McFadden, JP; Carlson, CW; Strangeway, R; Elphic, R;
Indirizzi:
Inst Space Sci, R-76900 Bucharest, Romania Inst Space Sci Bucharest Romania R-76900 Sci, R-76900 Bucharest, Romania Max Planck Inst Extraterr Phys, D-85740 Garching, Germany Max Planck Inst Extraterr Phys Garching Germany D-85740 arching, Germany Univ New Hampshire, Durham, NH 03824 USA Univ New Hampshire Durham NH USA03824 ew Hampshire, Durham, NH 03824 USA Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 Sci Lab, Berkeley, CA 94720 USA Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA Univ Calif Los Angeles Los Angeles CA USA 90024 Los Angeles, CA 90024 USA Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA Univ Calif Los Alamos Natl Lab Los Alamos NM USA 87545 amos, NM 87545 USA
Titolo Testata:
PHYSICS AND CHEMISTRY OF THE EARTH PART C-SOLAR-TERRESTIAL AND PLANETARY SCIENCE
fascicolo: 1-3, volume: 26, anno: 2001,
pagine: 223 - 228
SICI:
1464-1917(2001)26:1-3<223:OEFAPR>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
IONOSPHERIC ACCELERATION MECHANISM; ELECTRON-PRECIPITATION; FIELD; SATELLITE; CURRENTS; REGION; MOTION; FLUXES; EVENTS; SHOCKS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Marghitu, O Inst Space Sci, POB MG-23, R-76900 Bucharest, Romania Inst Space Sci POB MG-23 Bucharest Romania R-76900 t, Romania
Citazione:
O. Marghitu et al., "Observational evidence for a potential relationship between visible auroral arcs and ion beams - A case study", PHYS CH P C, 26(1-3), 2001, pp. 223-228

Abstract

Ground optical data in conjunction with particle measurements from FAST orbit 1859 are presented. The satellite crosses the camera field of view for about 2.5 minutes. The recorded data show a large inverted-V with embedded ion beams, pattern most probably resulted from altitude shifts of the lowerborder of the acceleration region. The optical observations cover a longerperiod, and enable connection of satellite determined features with later developments of the auroral structure. On this longer time scale small enhancements in the energy flux pumped into ionosphere, coincident with ion beams, seem to amplify and evolve into fully developed visible arcs. Field aligned electron precipitation measured in front of the ion beams together with normal motion of the auroral structure contribute to building up a coherent: scenario. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 19/01/20 alle ore 00:39:31