Mathematics – Logic
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38..627g&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 38, May 1990, p. 627-632. Research supported by Fundo Nacional de Desenvolvim
Mathematics
Logic
27
Energy Transfer, Magnetopause, Solar Terrestrial Interactions, Solar Wind, Coupled Modes, Mach Number, Magnetohydrodynamic Flow
Scientific paper
It is shown that all widely used coupling functions about the solar wind-magnetosphere interaction can be derived as particular cases of general expressions for the electric field and the energy transfer at the magnetopause due to large scale reconnection. Although the solar wind electric field gets transmitted along the reconnection line (e.g., Gonzalez and Mozer, 1974), it is also shown that the net effect of this transmission in the magnetosphere seems to be associated only to the transverse component (dawn to dusk direction) of this field with respect to the geomagnetic field at the magnetopause. Furthermore, the most general expression for power transfer from the solar wind to the magnetosphere via a MHD process is shown to lead to similar limits for the coupling as those obtained from the general expression for the reconnection power when the particular values for the power law index introduced by Vasyliunas et al. (1982), about the dependence of the power transfer on the interplanetary Alfven Mach number, are used.
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