Energy flow and dynamical coupling in the solar wind-magnetosphere-ionosphere system
Article first published online: 7 DEC 2012
Copyright 1983 by the American Geophysical Union.
Volume 18, Issue 6, pages 971–980, November-December 1983
How to Cite
1983), Energy flow and dynamical coupling in the solar wind-magnetosphere-ionosphere system, Radio Sci., 18(6), 971–980, doi:10.1029/RS018i006p00971.(
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 10 MAY 1983
- Manuscript Received: 18 OCT 1982
An attempt is made first to describe the solar wind-magnetosphere-ionosphere system in the simplest way in terms of a directly driven system powered by the solar wind-magnetosphere dynamo. The dynamo feeds the Pedersen currents to the ionosphere by generating the field-aligned currents, resulting in the convective motion of the ionosphere and the joule heat production. The field-aligned currents associated with both the Pedersen and Hall currents introduce a considerable complexity to this simple system by generating a potential drop along the geomagnetic field lines. It is also pointed out that the geometry of the open region, namely the polar cap, changes drastically as the BZ component of the interplanetary magnetic field becomes positive. Therefore, one must be cautious in organizing and analyzing data from the highest-latitude region.