Modeling magnetotail ion distributions with global magnetohydrodynamic and ion trajectory calculations : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 1998

Идентификатор DOI: 10.1029/GM104p0291

Аннотация: On February 9,1995, the Comprehensive Plasma Instrumentation (CPI) on the Geotail spacecraft observed a complex, structured ion distribution function near the magnetotail midplane at x ~ -30 RE. On this same day the Wind spacecraft observed a quiet solar wind and an interplanetary magnetic field (IMF) that was northward for more thПоказать полностьюan five hours, and an IMF By component with a magnitude comparable to that of the IMF Bz component. In this study, we determined the sources of the ions in this distribution function by following approximately 90,000 ion trajectories backward in time, using the time-dependent electric and magnetic fields obtained from a global MHD simulation. The Wind observations were used as input for the MHD model. The ion distribution function observed by Geotail at 1347 UT was found to consist primarily of particles from the dawn side low latitude boundary layer (LLBL) and from the dusk side LLBL; fewer than 2% of the particles originated in the ionosphere.

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Издание

Журнал: Geophysical Monograph Series

Выпуск журнала: Т. 104

Номера страниц: 291-296

ISSN журнала: 00658448

Авторы

  • El-Alaoui M. (Institute of Geophysics and Planetary Physics,University of California)
  • Ashour-Abdalla M. (Institute of Geophysics and Planetary Physics,University of California)
  • Raeder J. (Institute of Geophysics and Planetary Physics,University of California)
  • Peroomian V. (Institute of Geophysics and Planetary Physics,University of California)
  • Frank L.A. (Department of Physics and Astronomy,The University of Iowa)
  • Paterson W.R. (Department of Physics and Astronomy,The University of Iowa)
  • Bosqued J.M. (Centre d’Etude Spatiale des Rayonnements,CNRS)

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