An auroral enhancement of O2 at lambda 1.27-micron emission

Details An auroral enhancement of O2 at lambda 1.27-micron emission An auroral enhancement of O2 at lambda 1.27-micron emission

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978p%26ss...26..619b&link_type=abstract

Planetary and Space Sciences, vol. 26, July 1978, p. 619-634.

Computer Science

1

Auroras, Emission Spectra, Infrared Spectra, Oxygen Spectra, Spectral Bands, Ion Production Rates, Near Infrared Radiation, Nightglow, Optical Measurement, Radar Measurement

Scientific paper

The ground-level zenith radiance of the atmospheric emission at 1.27 microns was radiometrically observed to increase by a factor of approximately two with the onset of an IBC III(+) auroral breakup above Chatanika, Alaska, on March 10, 1975. Time-resolved optical spectra clearly show that the slow component of the enhancement is associated with the (0,0) band of the infrared atmospheric system of O2. Photometric and incoherent scatter radar data are used to define the energy-deposition profile and the absolute energy flux for the event. The magnitude of the O2 1.27-micron enhancement compares favorably with the predictions of an auroral excitation model which includes only secondary-electron excitation of molecular oxygen in the O2 source term.

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