Correlated observations of the equatorward diffuse auroral boundary

Details Correlated observations of the equatorward diffuse auroral boundary Correlated observations of the equatorward diffuse auroral boundary

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85..531s&link_type=abstract

Journal of Geophysical Research, vol. 85, Feb. 1, 1980, p. 531-542.

Physics

6

Auroral Zones, Correlation Detection, Electrophotometers, Equatorial Atmosphere, Oxygen Spectra, Airglow, Electron Precipitation, Emission Spectra, Ionospheric Electron Density, Kp Index, Night Sky, Satellite-Borne Instruments, Spectrophotometry, Time Dependence

Scientific paper

The equatorward boundary of the diffuse auroral zone, as viewed via the 6300-A (O/1D/) emission line, has been examined by using ground-based photometer data. These observations are supplemented with in situ measurements of ionospheric parameters by satellite-borne instrumentation within the photometer field of view. High spatial correlation among 6300-A emission, low-energy (E less than 1 keV) electron precipitation, and the high-latitude recovery of ambient electron density which constitutes the poleward cliff of the main ionospheric trough are found. A model is developed of the statistical equatorward boundary of the diffuse aurora as a function of magnetic local time and magnetic activity (as monitored by Kp index).

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