Physics
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990angeo...8..223n&link_type=abstract
Annales Geophysicae (ISSN 0992-7689), vol. 8, March 1990, p. 223-228. Research supported by the Max-Planck-Gesellschaft zur Foer
Physics
Auroras, Eiscat Radar System (Europe), Ionospheric Heating, Polar Regions, Diurnal Variations, Gravity Waves, Particle Precipitation, Solar Cycles, Temporal Distribution
Scientific paper
Height-integrated heat input from Joule dissipation and particle precipitation into the high latitude ionosphere, as derived from 1985 and 1986, EISCAT monostatic observations are presented. The results, representative for solar minimum conditions, are shown separately for winter and summer experiments as well as for low and high magnetic activity conditions as a function of universal time. Enhanced Joule and particle heating occur mainly before and after magnetic local midnight when EISCAT looks into the auroral oval. Significant deviations from this general pattern are observed depending on season and activity level. The average results are helpful for modeling purposes and estimates of gravity wave generation.
Natorf L.
Schlegel Kristian
Wernik Andrzej W.
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