Physics
Scientific paper
Jun 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977p%26ss...25..541t&link_type=abstract
Planetary and Space Science, vol. 25, June 1977, p. 541-547.
Physics
3
Airglow, Annual Variations, Diurnal Variations, Hydroxyl Emission, Oxygen Spectra, Atmospheric Density, Brazil, Magnetic Disturbances, Night Sky, Temperature Effects, Tides
Scientific paper
Results of OH (8, 3) emission-intensity and rotational-temperature measurements made in the Brazilian sector (23 deg S) from 1972 to 1974 are presented. Diurnal variations of both parameters are found to fall into distinct classes, showing significant seasonal effects. A correlative study with the O I 5577-A emission measured simultaneously is also presented. It is shown that both the phase and amplitude of the major part of the mean nocturnal intensity variations of the two emissions can be explained by density and temperature perturbations caused by the solar semidiurnal tide. The OH emission is found to increase slightly during magnetic disturbances.
Batista Pedro
Clemesha Barclay R.
Sahai Yogeshwar
Takahashi Hiroyuki
Teixeira N. R.
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