The Magnetospheric and Ionospheric Response to Solar Wind Dynamic Pressure Variations

  1. Gordon R. Wilson
  1. D. G. Sibeck

Published Online: 18 MAR 2013

DOI: 10.1029/GM062p0001

Modeling Magnetospheric Plasma Processes

Modeling Magnetospheric Plasma Processes

How to Cite

Sibeck, D. G. (1991) The Magnetospheric and Ionospheric Response to Solar Wind Dynamic Pressure Variations, in Modeling Magnetospheric Plasma Processes (ed G. R. Wilson), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM062p0001

Author Information

  1. The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland 20723

Publication History

  1. Published Online: 18 MAR 2013
  2. Published Print: 1 JAN 1991

ISBN Information

Print ISBN: 9780875900285

Online ISBN: 9781118663905



  • Space plasmas—Mathematical models—Congresses;
  • Magnetosphere—Mathematical models—Congresses


We discuss the characteristics of solar wind dynamic pressure variations associated with solar wind tangential discontinuties and transient processes at the Earth's bow shock. We quantify existing models for the transient magnetospheric and ionospheric response to the solar wind dynamic pressure variations. The largest variations in solar wind dynamic pressure drive large amplitude (∼1 RE magnetopause motion with radial velocities of ∼60 km s−1 and produce transient dayside ionospheric flows of 2 km s−1 which are organized into double convection vortices. Ground magnetometer signatures are most pronounced under the auroral ionosphere, where they reach 60–300 nT, and under the equatorial electrojet.