Physics
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81.3781b&link_type=abstract
Journal of Geophysical Research, vol. 81, Aug. 1, 1976, p. 3781-3785. Research supported by the Instituto de Pesquisas Espaciai
Physics
3
F Region, Nightglow, Oxygen Spectra, Tropical Regions, Wind Effects, Emission Spectra, Latitude, Oxygen Atoms, Plasma Dynamics, Time Dependence, Vertical Distribution
Scientific paper
The paper theoretically investigates the relationship of neutral winds and E x B plasma drifts to the time-dependent distribution of 1356-A and 6300-A airglow intensities in the region of the Appleton anomaly. Radiative recombination, ion-ion neutralization, and dissociative recombination are considered as main mechanisms in producing the atomic oxygen tropical nightglow. A quantitative relation is determined between the neutral wind velocities and the resultant asymmetry in the emissions about the dip equator. The height difference at northern and southern conjugate points is shown to be linearly related to the vector sum of the wind velocity components along the magnetic meridian at the latitude of the conjugate points. The height difference at conjugate points may be used to study the pattern of neutral wind velocities in the tropical ionosphere.
Bittencourt J. A.
Tinsley Brian A.
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