Anomalous electron temperature above the South American magnetic field anomaly

Details Anomalous electron temperature above the South American magnetic field anomaly Anomalous electron temperature above the South American magnetic field anomaly

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32.1513o&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 32, Dec. 1984, p. 1513-1522.

Computer Science

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10

Electron Energy, F Region, Geomagnetism, Magnetic Anomalies, Night Sky, Exos-A Satellite, Japanese Spacecraft, Particle Precipitation, Satellite Sounding, South America, Vertical Distribution

Scientific paper

Electron temperature measurements performed by the EXOS-A satellite in the night-time topside F-region above the South American magnetic field anomaly are reported. It is shown that out of a total of 29 observed cases of electron temperature enhancement, 23 occurred above the South American anomaly near a low magnetic field and at a magnetic field inclination of -20 degrees. The peak electron temperature was recorded at altitudes between 650 and 900 km between the minimal magnetic field and the minimum satellite altitude. No correlation was found between magnetic disturbances and the occurrence of anomalous electron temperature. Electron temperature increases of more than 1000 K were detected above the night-time topside F-region. Simultaneously enhanced wave emissions were found at frequencies of 45 kHz, 2 MHz, and 3 MHz. The theoretical principles used in the design of the electron temperature probe are discussed in an appendix.

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