Physics
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.4750l&link_type=abstract
Journal of Geophysical Research, vol. 82, Oct. 1, 1977, p. 4750-4756.
Physics
1
Electron Precipitation, Geomagnetic Pulsations, High Energy Electrons, Magnetic Storms, Plasma-Particle Interactions, Plasmapause, Auroral Zones, Energy Absorption, Magnetometers, Riometers
Scientific paper
Magnetometer and riometer data from the Finnish north-south chain ranging from L = 3.3 to L = 6.0 are used to study simultaneous IPDP (intervals of pulsations of diminishing period) magnetic pulsations and strong absorption events. A strong correlation is found between the absorption events (localized at L = 3.7-4.8) and the IPDPs, the latitude distribution of pulsation amplitudes being very similar to that of riometer absorption and the equatorward shift of absorption accompanied by the concurrent motion of the latitude of the maximum amplitude and by an increase in the wave frequency. It is suggested that these absorption events are due to the parasitic interactions of IPDP waves and relativistic electrons.
Kangas Jorma
Lukkari L.
Ranta Hilkka
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