Opportunities for analysis of ring current composition change through observation of the equatorial aurora

Details Opportunities for analysis of ring current composition change through observation of the equatorial aurora Opportunities for analysis of ring current composition change through observation of the equatorial aurora

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jatp...39.1203t&link_type=abstract

(IUGG, IAGA, COSPAR, URSI, NOAA, USAF, Australian Academy of Science, and Australian Institute of Physics, International Symposi

Physics

Auroras, Geocoronal Emissions, Plasma Composition, Ring Currents, Tropical Regions, Charge Exchange, Helium Ions, Hydrogen Ions, Ion Temperature, Oxygen Ions

Scientific paper

Theoretical and observational work indicates that He+ and O+ ions eventually outnumber protons in the recovery phase ring current, owing to the different loss rates in each case for charge exchange with geocoronal hydrogen. Satellite and ground-based measurements of hydrogen, oxygen, and helium emissions in the resulting equatorial aurora provide a means of monitoring both composition and flux changes, and perhaps would yield some information on the mean ion energy in each case. Observations from Huancayo are discussed.

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