On separation of the potential and vortex parts of the magnetotail electric field

Details On separation of the potential and vortex parts of the magnetotail electric field On separation of the potential and vortex parts of the magnetotail electric field

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39..563p&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 39, April 1991, p. 563-568.

Computer Science

15

Auroral Arcs, Geoelectricity, Geomagnetic Tail, Magnetic Storms, Magnetic Field Configurations, Magnetic Field Reconnection, Plasma Layers, Solar Terrestrial Interactions

Scientific paper

Development of magnetospheric substorms is controlled by variations of two components of the magnetospheric electric field: a potential field and a vortex one. It is shown that the motion of auroral arcs located at closed magnetic field lines is determined by the potential field only, while the motion of arcs located at the field lines passing the reconnection (neutral) line in the plasma sheet is determined by the vertex field only. The regularities of the auroral arc motion at various phases of the substorm are studied, and the energy budget of magnetospheric substorms is discussed.

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