Relationship of the interplanetary electric field to the high-latitude ionospheric electric field and currents Observations and model simulation

Details Relationship of the interplanetary electric field to the high-latitude ionospheric electric field and currents Observations and model simulation Relationship of the interplanetary electric field to the high-latitude ionospheric electric field and currents Observations and model simulation

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.6959c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, June 1, 1986, p. 6959-6971.

Computer Science

Sound

57

Electric Fields, F Region, Interplanetary Magnetic Fields, Ionospheric Currents, Polar Regions, Solar Terrestrial Interactions, Solar Wind, Convection, Earth Magnetosphere, Field Aligned Currents, Incoherent Scatter Radar, Ion Motion, Ionospheric Sounding

Scientific paper

The electrical coupling between the solar wind, magnetosphere, and ionosphere is studied. The coupling is analyzed using observations of high-latitude ion convection measured by the Sondre Stromfjord radar in Greenland and a computer simulation. The computer simulation calculates the ionospheric electric potential distribution for a given configuration of field-aligned currents and conductivity distribution. The technique for measuring F-region in velocities at high time resolution over a large range of latitudes is described. Variations in the currents on ionospheric plasma convection are examined using a model of field-aligned currents linking the solar wind with the dayside, high-latitude ionosphere. The data reveal that high-latitude ionospheric convection patterns, electric fields, and field-aligned currents are dependent on IMF orientation; it is observed that the electric field, which drives the F-region plasma curve, responds within about 14 minutes to IMF variations in the magnetopause. Comparisons of the simulated plasma convection with the ion velocity measurements reveal good correlation between the data.

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