Mathematics – Logic
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32...69f&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 32, Jan. 1984, p. 69-85. Research supported by the Science and Engineering Re
Mathematics
Logic
46
Atmospheric Circulation, Atmospheric Models, Geomagnetism, Magnetic Storms, Thermosphere, Vortices, Angular Momentum, Anticyclones, Auroral Zones, Coriolis Effect, Cyclones, E Region, Polar Substorms, Three Dimensional Models
Scientific paper
A time-dependent three-dimensional global model is used to simulate the response of the thermosphere to an isolated substorm, which is characterized by a time-invariance of the high latitude convective electric field, with an associated enhancement of auroral E region electron density, from an initially quiet thermosphere. Simulations involving both separated and coincident geographic and geomagnetic poles yield a long-lived vortex phenomenon in the lower thermosphere. A theory is derived to explain and interpret the results, and it is noted that the effect is analogous to a meteorological weather system. The dusk anticyclonic vortex of the present case has, however, a centrifugal acceleration that balances the Coriolis force in place of pressure.
Fuller-Rowell Tim J.
Rees David
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