Accession Number : ADA112274

Title :   Temporal and Spatial Structure of Short Wavelength Infrared Auroral Backgrounds.

Descriptive Note : Final rept. 1 Jun 77-31 Mar 81,

Corporate Author : AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA

Personal Author(s) : Huppi,E Ray ; Villanucci,Dennis ; Bruce,Marshall

PDF Url : ADA112274

Report Date : 13 Oct 1981

Pagination or Media Count : 91

Abstract : Infrared auroral backgrounds in the 3 micron region were measured with a filtered radiometer from a KC-135 aircraft. The measurements of temporal and spatial variations in the infrared were compared with simultaneous measurements of 3914A and 5577A visible radiation. Auroral measurements were obtained during dark and sunlit conditions. Frequency analysis shows the 3 micron and 5577A to be delayed and filtered relative to the prompt 3914A N2(+) emission. The ratio of 3 micron to 3914A emission varies by about a factor of 3 and appears to be a function of peak electron deposition altitude. (Author)

Descriptors :   *AURORAE, *BACKGROUND RADIATION, *INFRARED SPECTRA, NITROGEN OXIDES, RADIOMETRY, DATA ACQUISITION, TANKER AIRCRAFT, CHEMILUMINESCENCE, FOURIER TRANSFORMATION, SPATIAL DISTRIBUTION, DIURNAL VARIATIONS, COMPARISON, LOW LIGHT LEVELS, TELEVISION SYSTEMS, PHOTOMETERS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE