Ca(+) emission in the sunlit ionosphere

Details Ca(+) emission in the sunlit ionosphere Ca(+) emission in the sunlit ionosphere

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.2379t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, March 1, 1990, p. 2379-2387.

Physics

8

Airglow, Calcium, Ionospheric Ion Density, Metal Ions, Resonance Fluorescence, Brightness Distribution, Emission Spectra, Line Spectra, Meteoroid Showers, Spatial Distribution

Scientific paper

In the course of a program of twilight airglow observations, the resonance fluorescence emissions from calcium ions were measured. In particular, twilight sequences were obtained during the period of December 19-22, 1987, which coincided with the Ursids meteorite shower. During this meteorite event the intensities of the Ca(+) emission lines at 3934A increased to the point that the surface brightness profiles could be inverted to volume emission rate profiles. These profiles show evidence for strong spatial redistribution of the Ca(+) over the course of three days. Observations of these emissions during meteor shower periods could provide a valuable tracer for the processes responsible for the transport of ions in the D, E, and F region, allowing the full altitude and latitude extent of the distribution to be determined.

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