Interplanetary energetic ions and polar radio wave absorption

Details Interplanetary energetic ions and polar radio wave absorption Interplanetary energetic ions and polar radio wave absorption

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.3543a&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, April 1, 1989, p. 3543-3554. Research supported by the University of

Physics

10

Atmospheric Ionization, Electromagnetic Absorption, Energetic Particles, Interplanetary Medium, Polar Regions, Energy Spectra, Solar Protons, Southern Hemisphere, Spaceborne Experiments

Scientific paper

Data on interplanetary energetic ions observed with the IMP 8 spacecraft were related to the associated polar radio wave absorption which was derived from 20-, 30-, and 51.4-MHz riometer measurements made at the South Pole Station. These results demonstrate that measurements of interplanetary ions by the IMP 8 satellite orbiting the earth at 30-35 earth radii can be used to accurately estimate the amount of radio wave absorption in the polar ionosphere. In order to obtain good agreement between the computed and observed absorptions, both absolute fluxes and energy spectra for protons and alpha particles had to be taken into account in the propagation of the charged particle through the seasonally adjusted polar atmosphere.

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