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Titolo:
Auroral forms and the field-aligned current structure associated with field line resonances
Autore:
Milan, SE; Sato, N; Ejiri, M; Moen, J;
Indirizzi:
Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England UnivLeicester Leicester Leics England LE1 7RH er LE1 7RH, Leics, England Natl Inst Polar Res, Itabashi Ku, Tokyo 1738515, Japan Natl Inst Polar Res Tokyo Japan 1738515 tabashi Ku, Tokyo 1738515, Japan Univ Oslo, Dept Phys, N-0316 Oslo, Norway Univ Oslo Oslo Norway N-0316Univ Oslo, Dept Phys, N-0316 Oslo, Norway Univ Courses Svalbard, Longyearbyen, Norway Univ Courses Svalbard Longyearbyen Norway valbard, Longyearbyen, Norway
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
fascicolo: A11, volume: 106, anno: 2001,
pagine: 25825 - 25833
SICI:
0148-0227(20011101)106:A11<25825:AFATFC>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
WAVES; MODEL; ARCS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Milan, SE Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England Univ Leicester Univ Rd Leicester Leics England LE1 7RH , England
Citazione:
S.E. Milan et al., "Auroral forms and the field-aligned current structure associated with field line resonances", J GEO R-S P, 106(A11), 2001, pp. 25825-25833

Abstract

We show evidence to suggest that some auroral forms may be related to the field-aligned current structure associated with magnetohydrodynamic wave activity, specifically field line resonances. These auroras appear as a series of azimuthally spaced east-west elongated arcs, inclined slightly from north to south. Modeling shows that this "braided" appearance reflects the locations of upward field-aligned current driven by the wave. Moreover, more complicated auroral structures can be produced if several harmonically related waves occur together. We model a situation in which two harmonic components are present at the latitude of resonance and demonstrate the striking similarity between the resulting field-aligned current structures and actual auroral observations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 04:47:05