Physics
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6..483l&link_type=abstract
Geophysical Research Letters, vol. 6, June 1979, p. 483-486. Swiss National Science Foundation
Physics
7
Dynamic Characteristics, Equatorial Atmosphere, International Sun Earth Explorer 1, Magnetic Storms, Ring Currents, Data Processing, Distribution Functions, Diurnal Variations, Earth Magnetosphere, Energy Spectra, Hydrogen Ions, Ion Injection, Velocity Distribution
Scientific paper
On December 11, 1977 the ISEE-1 spacecraft traversed the equatorial magnetosphere in the prenoon and dawn sectors during the early recovery phase of a magnetic storm with peak DST of -125 gamma. Along the dayside leg O(+) was comparable to or exceeded H(+) in number density in the energy range 0.1-17 keV. The velocity distribution of O(+) showed a characteristic dispersion, consistent with the ions being transported to the dayside from the dusk to midnight sector. The high-energy slope of the H(+) and O(+) distribution functions showed different radial dependence, with the slope of H(+) being consistent with a harder component carrying most of the energy density.
Balsiger Hans
Johnson Richard G.
Lennartsson W.
Sharp R. D.
Shelley Edward G.
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