Large-scale dynamics of the magnetospheric boundary: Comparisons between global MHD simulation results and ISTP Observations : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 1998

Идентификатор DOI: 10.1029/GM104p0247

Аннотация: Understanding the large-scale dynamics of the magnetospheric boundary is an important step towards achieving the ISTP mission’s broad objective of assessing the global transport of plasma and energy through the geospace environment. Our approach is based on three-dimensional global magnetohydrodynamic (MHD) simulations of the solarПоказать полностьюwind-magnetosphere-ionosphere system, and consists of using interplanetary magnetic field (IMF) and plasma parameters measured by solar wind monitors upstream of the bow shock as input to the simulations for predicting the large-scale dynamics of the magnetospheric boundary. The validity of these predictions is tested by comparing local data streams with time series measured by downstream spacecraft crossing the magnetospheric boundary. In this paper, we review results from several case studies which confirm that our MHD model reproduces very well the large-scale motion of the magnetospheric boundary. The first case illustrates the complexity of the magnetic field topology that can occur at the dayside magnetospheric boundary for periods of northward IMF with strong Bx and BY components. The second comparison reviewed combines dynamic and topological aspects in an investigation of the evolution of the distant tail at 200 RE from the Earth.

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Издание

Журнал: Geophysical Monograph Series

Выпуск журнала: Т. 104

Номера страниц: 247-260

ISSN журнала: 00658448

Авторы

  • Berchem J. (Institute of Geophysics and Planetary Physics,University of California)
  • Raeder J. (Institute of Geophysics and Planetary Physics,University of California)
  • Ashour-Abdalla M. (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)
  • Ackerson K.L. (Department of Physics and Astronomy,The University of Iowa)
  • Kokubun S. (Solar-Terrestrial Environment Laboratory,Nagoya University)
  • Yamamoto T. (Institute of Space and Astronautical Science)
  • Lepping R.P. (NASA,Goddard Space Flight Center)

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