Physics
Scientific paper
Jul 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.7405s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 92, July 1, 1987, p. 7405-7412.
Physics
63
Atmospheric Models, Geomagnetic Tail, Magnetic Field Configurations, Magnetohydrodynamics, Space Plasmas, Atmospheric Boundary Layer, Current Sheets, Daytime, Earth Magnetosphere, Magnetosheath, Plasma Interactions
Scientific paper
The Coroniti-Kennel MHD model for the open magnetotail boundary, in which a standing slow-mode expansion fan turns the magnetosheath flow into the plasma mantle and converts the magnetosheath field into the tail lobe field, is quantitatively tested here and verified. It is shown how the relatively thick and rapidly propagating high-latitude expansion automatically thins and slows at lower latitudes. The model shows how the dawn-to-dusk current sheet that bisects the tail horizontally can return to dawn over the tail's back uninterruptedly across a seamless juncture between the high-and low-latitude boundary layers. A rotational discontinuity preconditions the field to pass through the slow mode wave and induces a secondary circulation in the cross-sectional plane which sweeps plasma sheet dawnward and duskward away from the tail's midplane and draws it up the tail's flanks.
Sanchez Ernesto
Siscoe George L.
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