The Response of the Magnetosphere-Ionosphere System to Solar Wind Dynamic Pressure Variations

  1. C. T. Russell,
  2. E. R. Priest and
  3. L. C. Lee
  1. M. P. Freeman1,
  2. C. J. Farrugia1,
  3. S. W. H. Cowley1,
  4. D. J. Southwood1,
  5. M. Lockwood2 and
  6. A. Etemadi3

Published Online: 21 MAR 2013

DOI: 10.1029/GM058p0611

Physics of Magnetic Flux Ropes

Physics of Magnetic Flux Ropes

How to Cite

Freeman, M. P., Farrugia, C. J., Cowley, S. W. H., Southwood, D. J., Lockwood, M. and Etemadi, A. (1990) The Response of the Magnetosphere-Ionosphere System to Solar Wind Dynamic Pressure Variations, in Physics of Magnetic Flux Ropes (eds C. T. Russell, E. R. Priest and L. C. Lee), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM058p0611

Author Information

  1. 1

    Blackett Lab., Imperial College, London, SW7 2BZ, UK

  2. 2

    Rutherford Appleton Lab., Chilton, Didcot, Oxon., OX11 0QX, UK

  3. 3

    Mullard Space Science Lab., Holmbury St. Mary, Dorking, RH5 6NT, UK

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1990

ISBN Information

Print ISBN: 9780875900261

Online ISBN: 9781118663868

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Keywords:

  • Solar photosphere;
  • Magnetic flux;
  • Astrophysics

Summary

We study the causal chain of events by which variations in the solar wind dynamic pressure cause the magnetopause boundary to move and excite magnetic perturbations at the ground. The observation of large ground magnetic transients is argued to be due to the coupling of the magnetohydrodynamic compressional wave to the field-guided Alfvén wave, which carrying current, can thereby transfer momentum to the ionosphere. The study highlights the similarity of the ionospheric signatures at a single station arising from the response of the coupled magnetosphere-ionosphere system to disparate impulsive processes at the magnetopause.