Physics – Space Physics
Scientific paper
Jun 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jgra..108.1253m&link_type=abstract
Journal of Geophysical Research Space Physics, Volume 108, Issue A6, pp. SIA 7-1, CiteID 1253, DOI 10.1029/2003JA009894
Physics
Space Physics
6
Ionosphere: Instruments And Techniques, Ionosphere: Midlatitude Ionosphere, Ionosphere: Ionospheric Dynamics, Ionosphere: Ionospheric Disturbances
Scientific paper
We develop a technique to create two-dimensional maps of the field line integrated, F-layer Pedersen conductivity from images of the 630.0-nm emission at midlatitudes. By modeling the 630.0-nm and the height-integrated Pedersen conductivity, we show that the former can be used as a surrogate for the latter to within 0.2 mhos if information on the height of the F-layer is known. A simple thin-shell model is used to convert the height-integrated conductivity to field line integrated conductivity, a more useful parameter in the study of midlatitude ionospheric dynamics. Two nights are studied using this technique, one with a gradient in electron density seen to the south and one with severe depletions. In the latter case, bands of alternating low and high field line integrated Pedersen conductivity are seen to align from the northwest to southeast, just as predicted by Perkins [1973].
Kelley Michael C.
Makela Jonathan J.
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