Computer Science – Numerical Analysis
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jatp...41..841r&link_type=abstract
(COSPAR, SCOSTEP, IAU, IUGG, URSI, and IUPAP, International Symposium on Solar-Terrestrial Physics, 5th, Innsbruck, Austria, May
Computer Science
Numerical Analysis
8
Auroras, Dynamic Response, Gravity Waves, Ionospheric Propagation, Temperate Regions, Traveling Ionospheric Disturbances, Diurnal Variations, Electron Energy, F Region, Gas Temperature, Ionospheric Electron Density, Ionospheric Storms, Neutral Gases, Nocturnal Variations, Numerical Analysis
Scientific paper
The paper reviews aurora-generated large-scale traveling ionospheric disturbances, and presents results of numerical simulations of one such event. It is shown that large-scale gravity waves are generated in the high-latitude thermosphere during geomagnetic disturbances. Traveling to middle and low latitudes within the thermosphere, these waves interact with the ionosphere to produce large-scale traveling ionospheric disturbances. Relatively large amplitude waves generated by the Joule heating due to high latitude ionospheric electric currents can propagate many thousands of kilometers at speeds of 300-1000m/s, with periods of 30 min to several hours and horizontal wavelengths of thousands of kilometers. They affect the ionosphere not only by imparting vertical motion to the ionization, but also by altering the chemical reaction rates and heat transfer rates.
Richmond Arthur D.
Roble Raymond G.
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