Mathematics – Logic
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16..915k&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 16, Aug. 1989, p. 915-918. Research supported by AN SSSR.
Mathematics
Logic
7
Interplanetary Magnetic Fields, Magnetic Field Reconnection, Mars (Planet), Planetary Magnetospheres, Bow Waves, Dynamic Characteristics, Larmor Radius, Magnetopause, Solar Wind, Mars, Dynamics, Bow Shock, Magnetosheath, Magnetopause, Magnetic Fields, Dayside, Magnetotail, Ionosphere, Diagrams, Theoretical Studies, Convection, Magnetosphere
Scientific paper
If Mars has a small intrinsic magnetic moment, Mars' magnetosphere could vary on time scales of a few minutes due to reconnection with the solar wind magnetic field. The day-side magnetopause will be one or two reflected-ion Larmor radii from the bow shock. Substorms will have scale-times of about six minutes. Mars' high ionospheric conductance will virtually stop polar cap convection, and create a magnetic 'topological crisis' unless convecting magnetic flux finds a dissipative way to return to the day-side. The strong magnetic shear induced by magnetospheric convection above the ionosphere could be tearing unstable. The magnetic field might diffusively 'percolate' through the tearing layer. This shearing also draws field aligned currents from the ionosphere which could inject few KeV heavy ionospheric ions into the magnetotail.
Coroniti Ferdinan V.
Kennel Charles F.
Moses Stewart L.
Zelenyi Lev M.
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