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Titolo:
THE SUBSOLAR MAGNETOSHEATH AND MAGNETOPAUSE FOR HIGH SOLAR-WIND RAM PRESSURE - WIND OBSERVATIONS
Autore:
PHAN TD; LARSON DE; LIN RP; MCFADDEN JP; ANDERSON KA; CARLSON CW; ERGUN RE; ASHFORD SM; MCCARTHY MP; PARKS GK; REME H; BOSQUED JM; DUSTON C; WENZEL KP; SANDERSON TR; SZABO A;
Indirizzi:
UNIV CALIF BERKELEY,SPACE SCI LAB BERKELEY CA 94720 CTR ETUD SPATIALE RAYONNEMENTS F-31029 TOULOUSE FRANCE EUROPEAN SPACE AGCY,ESTEC,DEPT SPACE SCI 2200 AG NOORDWIJK NETHERLANDS NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB GREENBELT MD 20771 UNIV WASHINGTON,GEOPHYS PROGRAM SEATTLE WA 98195
Titolo Testata:
Geophysical research letters
fascicolo: 10, volume: 23, anno: 1996,
pagine: 1279 - 1282
SICI:
0094-8276(1996)23:10<1279:TSMAMF>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
T.D. Phan et al., "THE SUBSOLAR MAGNETOSHEATH AND MAGNETOPAUSE FOR HIGH SOLAR-WIND RAM PRESSURE - WIND OBSERVATIONS", Geophysical research letters, 23(10), 1996, pp. 1279-1282

Abstract

On a rapid inward pass through the subsolar magnetosheath (MSH) and magnetopause (MP), the WIND spacecraft initially encountered a moderately-compressed low-magnetic shear MP (at a radial distance of 8.6 R(E)), followed by multiple crossings of a high-shear MP (at 8.2 R(E)). Thelarge shear resulted from a southward turning of the external MSH field. Strong magnetic field pile-up, a plasma depletion layer (PDL), andplasma flow acceleration and rotation to become more perpendicular tothe local magnetic field were observed in the MSH on approach to the low-shear MP. At the high-shear MP, magnetic reconnection flows were detected, and there are some indications that plasma depletion effects were weak or absent in the adjacent MSH. We attribute the changes in the MP and MSH properties to the sudden rotation of the MSH field direction. In essence, the structure of the MP regions under the unusually high solar wind ram pressure condition in this case does not seem to be qualitatively different from that observed under more typical (less compressed) conditions. Also similar to previous observations, the mirror mode is marginally unstable in the MSH proper, but is stable in the PDL. In this region, the proton temperature anisotropy is inversely correlated with beta(p parallel to). Finally, the electron distributions are observed to be anisotropic (T-e perpendicular to/T-e parallel to similar to 1.3) throughout the entire MSH.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 17:44:39