Physics
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81.3283s&link_type=abstract
Journal of Geophysical Research, vol. 81, July 1, 1976, p. 3283-3291. Research supported by the Lockheed Independent Research P
Physics
9
Magnetic Storms, Oxygen Ions, Particle Energy, Hydrogen Ions, Morphology, Night Sky, Northern Hemisphere, Precipitation, Time Response
Scientific paper
Results are presented for a statistical analysis of the temporal variations of precipitating O(+) and H(+) ions in the energy range 0.7-12 keV during the magnetic storms on Dec. 16-18, 1971. Emphasis is on the temporal variations of parameters describing the intensity, average energy, and spatial location of the precipitation zones of the two ionic species. It is shown that the intensity of the precipitating O(+) ions correlate well with the geomagnetic indices which measure the strength of magnetospheric substorm activity and the strength of the storm time ring current, indicating that a previously unknown strong coupling mechanism existed between the magnetosphere and the ionosphere during the storm period. Correlations are found between the locations of the O(+) and H(+) precipitation zones and between the average energies of the two ionic species. Precipitation is shown to be an important loss mechanism for ring current ions with energy less than 12 keV during the magnetic storm period studied.
Johnson Richard G.
Sharp R. D.
Shelley Edward G.
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