Photometer and spectrometer search of the oxygen green and red lines during artificial ionospheric heating in the auroral zone

Details Photometer and spectrometer search of the oxygen green and red lines during artificial ionospheric heating in the auroral zone Photometer and spectrometer search of the oxygen green and red lines during artificial ionospheric heating in the auroral zone

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984angeo...2...73h&link_type=abstract

Annales Geophysical (ISSN 0755-0685), vol. 2, Jan.-Feb. 1984, p. 73-75. Army-sponsored research.

Physics

1

Auroral Spectroscopy, Ionospheric Heating, Oxygen Spectra, Radio Attenuation, Airglow, Atmospheric Circulation, F Region, Line Spectra, Radio Frequencies, Spectrograms, Spectrophotometers, Thermosphere

Scientific paper

During four campaigns in 1980-1981 the oxygen green and red lines have been observed for several hours with the heating transmitter operating during obviously quiet ionospheric periods. There has been no period with intensity modulation which could unambiguously be due to ionospheric heating caused by the continuous RF radiation. The main reason for the absence of intensity modulation is most likely insufficient energization of the atmospheric electrons. Secondly, the possibly excited O(1D) atoms can be dispersed over wide areas by thermospheric winds before they radiate. These hindrances have most likely prevented the resulting red line from increasing to a detectable level.

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