Simulation of storm-time partial ring current system and the dawn-dusk asymmetry of geomagnetic variation

Details Simulation of storm-time partial ring current system and the dawn-dusk asymmetry of geomagnetic variation Simulation of storm-time partial ring current system and the dawn-dusk asymmetry of geomagnetic variation

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39..821t&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 39, June 1991, p. 821-832.

Computer Science

12

Diurnal Variations, Magnetic Storms, Magnetic Variations, Midlatitude Atmosphere, Ring Currents, Systems Simulation, Field Aligned Currents, Ionospheric Currents, Magnetic Disturbances, Particle Motion

Scientific paper

The ring current has been simulated using a monochromatic model; the temporal variation of the divergence of the ring current is thereby obtained. Assuming that the divergence of the ring current is closed by the field-aligned currents, the ionospheric currents and the geomagnetic variation on the earth surface are derived. Results of the variation of the H component at midlatitudes caused by the field-aligned current agree with observational results. The simulated asymmetry of the H component is much larger than the simulated symmetric part of the H component. This suggests that some part of the D(st) development is caused by a ring current which does not have the current divergence.

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