Physics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985georl..12..329k&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 12, May 1985, p. 329-332. NASA-supported research.
Physics
90
Magnetic Storms, Magnetospheric Proton Density, Ring Currents, Energy Spectra, Flux Density, Helium Ions, Oxygen Ions, Satellite Observation, Sudden Storm Commencements
Scientific paper
Compositional studies of the equatorial distributions of ring current ions during the September 4, 1984 magnetic storm have been made possible by comprehensive energy, charge state, and mass coverage data from the Charge Composition Explorer satellite. An examination of ion spectra at an L value of about 4 on September 5, in the local evening sector, shows that energy density was dominated by protons, with O ions contributing about 27 percent at the peak of about 150 keV, while He ions contributed less than about 2 percent. September 6 ion spectra, taken during the recovery phase of the storm, indicate that ion densities at more than 20 keV had decreased markedly, and that the ring current energy density was primarily provided by protons.
Gloeckler George
Krimigis Stamatios M.
McEntire Richard W.
Potemra Thomas A.
Scarf Frederick L.
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