Physics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jatp...48..585p&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 48, June 1986, p. 585-595. Research supported by the Finni
Physics
6
Auroral Absorption, Auroral Zones, Diurnal Variations, Electron Precipitation, Geomagnetic Pulsations, Riometers, Atmospheric Models, Ground Stations, Ion Cyclotron Radiation
Scientific paper
Data from the Finnish north-south chain of riometers and pulsation magnetometers is analyzed to show that there is a type of electron precipitation event in the afternoon-to-evening sector of the auroral and subauroral zone which occurs simultaneously with IPDP pulsation events. These events show concurrent motions of their sources. It is concluded that in these cases riometer absorption events can be used to trace the movements of the source field line of pulsations. This information is used in model calculations which simulate the motions of the IPDP source region by taking into account the geometry of the particle injection boundary in the midnight sector and the westward drift of energetic protons in the magnetosphere.
Kangas Jorma
Maltseva N.
Pikkarainen T.
Ranta Aarne
Ranta Hilkka
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