Physics
Scientific paper
Mar 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978kosis..16..226k&link_type=abstract
Kosmicheskie Issledovaniia, vol. 16, Mar.-Apr. 1978, p. 226-237. In Russian.
Physics
Geomagnetism, Magnetic Storms, Proton Belts, Ring Currents, Solar Protons, Lines Of Force, Molniya Satellites, Proton Flux Density, Solar Activity Effects
Scientific paper
Data on differential proton fluxes with energies of 31 to 92, 67 to 122, and 182 to 377 keV are analyzed which were obtained by the Molniya 1 satellite during the moderate geomagnetic storm of January 25, 1974. It is found that the radiation-belt zone is divided into two regions: an inner region where the mean differential-spectrum energy is proportional to the inverse cube of L shell and an outer region where the variation of mean energy with L shell is approximately constant. The results also indicate that the proton energy density in the range from 31 to 377 keV exceeds the geomagnetic-field energy density at vertices of lines of force in the outer region, that the boundary between the two regions is located at L of approximately 7 during magnetically quiet times, and that this boundary approaches earth during magnetic disturbances. The boundary is shown to have descended to L of approximately 5 during the main phase of the investigated storm.
Kovtiukh A. S.
Panasiuk M. I.
Sosnovets Eh. N.
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