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On the generation of field-aligned plasma flow at the boundary of the plasma sheet

Schindler, K. ; Birn, J.

J. Geophys. Res.; (United States), 1987-01, Vol.92 (A1), p.95-107 [Periódico revisado por pares]

Legacy CDMS: Blackwell Publishing Ltd

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  • Título:
    On the generation of field-aligned plasma flow at the boundary of the plasma sheet
  • Autor: Schindler, K. ; Birn, J.
  • Assuntos: 640201 - Atmospheric Physics- Auroral, Ionospheric, & Magetospheric Phenomena ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; EARTH ATMOSPHERE ; EARTH MAGNETOSPHERE ; FLUID MECHANICS ; GEOMAGNETIC FIELD ; Geophysics ; HYDRODYNAMICS ; MAGNETIC FIELDS ; MAGNETIC RECONNECTION ; MAGNETOHYDRODYNAMICS ; MAGNETOTAIL ; MECHANICS ; PLASMA SHEET
  • É parte de: J. Geophys. Res.; (United States), 1987-01, Vol.92 (A1), p.95-107
  • Notas: ArticleID:5A8331
    ark:/67375/WNG-7WTWRHVJ-3
    istex:ED82214214A3984C79AB2C3A0B95C3A5E5436B3E
    CDMS
    Legacy CDMS
    ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
  • Descrição: A possible cause of the large plasma flow velocities parallel to the magnetic field (which were observed in spacecraft experiments) near the boundary of the plasma sheet in the earth's magnetotail is considered in the framework of a magnetohydrodynamic model. It is shown for steady-state configurations that high parallel flow velocities can be expected to exist on field lines connecting to a region of weak magnetic field. The physical mechanism causing large values of the parallel velocity component can be visualized as a strong imbalance of perpendicular mass flux into and out of magnetic flux tubes passing through regions where the magnetic field is weak and inhomogeneous. The value of the parallel velocity component is evaluated, and it is found that it can substantially exceed the perpendicular velocity (by as much as a factor of 40). The results are applied to the earth's magnetotail; it is found that this mechanism is able to explain the parallel flow velocities near the boundary of the plasma sheet in the range of several hundreds of km/s.
  • Editor: Legacy CDMS: Blackwell Publishing Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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