Physics
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..537s&link_type=abstract
Geophysical Research Letters, vol. 7, July 1980, p. 537-540.
Physics
4
Equatorial Atmosphere, Plasma Diagnostics, Plasma Probes, Radar Tracking, Rocket-Borne Instruments, Spread F, Atmospheric Turbulence, Electron Density Profiles, Ion Density (Concentration), Mass Spectrometers, Molecular Ions, Nitrogen Oxides, Oxygen Ions
Scientific paper
To investigate the detailed relationships involving large scale plasma depletions, meter-size irregularities and associated ion-chemical signatures, a rocket payload was launched into the topside F-region ionosphere. The initial coordinated observations of the radar plumes and in situ measurements of the rocket-borne plasma probes and mass spectrometer are presented. The in situ measurements established field alignment of large scale depletions to distances at least as great as 168 km, and ion composition measurements within a topside depletion showed little evidence of bottomside molecular tracer ions. In addition, large scale fluctuations of O+ accompanied by a near-constant level of NO+ and O2+ on the bottomside F-layer gradient suggests that neutral atmospheric turbulence is not a major source for bottomside ionospheric plasma irregularities and the associated triggering of equatorial spread-F.
Holmes John C.
Narcisi R.
Szuszczewicz Edward P.
Tsunoda Roland T.
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