Physics
Scientific paper
Jul 1965
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1965jatp...27..831p&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 27, no. 7, pp. 831-832, IN5, 833-841
Physics
1
Scientific paper
Brightness fluctuations of the [OI]32 and N2+(B2[summation operator]u+ -- X2[summation operator]g+; 0-0) emissions occur "almost always" in quiet auroral forms. A cross-spectral method of analyzing the photometric data is described by which the mean lifetime of the 1S0 level of OI is determined. The results obtained from data recorded at Saskatoon are comparable to those obtained from active forms with other methods by previous workers. Fluctuations of the brightness of these two auroral emissions are presented which indicate the spectral characteristics of the fluctuations in quiet-form aurorae. There are some indications that the mean life of the 1S0 level is related to the frequency of the brightness fluctuations in the N2+(B2[summation operator]u+ -- X2[summation operator]g+; 0-0) emission. If a direct relationship between the mean lifetime and auroral height can be established, the crossspectral method provides an excellent means for auroral height determinations.
Paulson K. V.
Shepherd Gordon G.
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