The flywheel effect - Ionospheric currents after a geomagnetic storm

Details The flywheel effect - Ionospheric currents after a geomagnetic storm The flywheel effect - Ionospheric currents after a geomagnetic storm

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.1845d&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, Oct. 1991, p. 1845-1848.

Physics

24

Field Aligned Currents, Hall Effect, Ionospheric Currents, Magnetic Storms, Thermosphere, Computerized Simulation, Neutral Atmospheres, Polar Regions, Spatial Distribution

Scientific paper

The origin of 'flywheel' currents that persist in the ionosphere after a geomagnetic storm are investigated by simulating a storm which occurred in November 23, 1982, using the NCAR Thermosphere Ionosphere GCM. Results of the analysis of the components of the high-latitude height-integrated Hall currents show that the neutral component of these currents may drive as much as 80 percent of the high-latitude current system immediately after the storm has ended, and may continue to dominate this system for 4 to 5 hours.

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