Energy coupling function and solar wind-magnetosphere dynamo
Article first published online: 7 DEC 2012
Copyright 1979 by the American Geophysical Union.
Geophysical Research Letters
Volume 6, Issue 7, pages 577–580, July 1979
How to Cite
(1979), Energy coupling function and solar wind-magnetosphere dynamo. Geophysical Research Letters, 6: 577–580. doi: 10.1029/GL006i007p00577
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 21 MAY 1979
- Manuscript Received: 19 MAR 1979
The power delivered by the solar wind dynamo to the open magnetosphere is calculated based on the concept of field line reconnection, independent of the MHD steady reconnection theories. By recognizing a previously overlooked geometrical relationship between the reconnection electric field and the magnetic field, the calculated power is shown to be approximately proportional to the Akasofu-Perreault energy coupling function for the magnetospheric substorm. In addition to the polar cap potential, field line reconnection also gives rise to parallel electric fields on open field lines in the high-latitude cusp and the polar cap regions.