Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa34a..03m&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SA34A-03
Physics
[2431] Ionosphere / Ionosphere/Magnetosphere Interactions, [2443] Ionosphere / Midlatitude Ionosphere, [2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions, [2768] Magnetospheric Physics / Plasmasphere
Scientific paper
The equatorial edge of the mid-latitude trough has been shown to be an ionospheric signature of the plasmapause from both ground-based and space-based observations. However, identifying the trough is not always possible due to broad latitudinal density gradients, local time and seasonal effects, and storm and substorm dynamics. We review the current methods of identifying the trough from ground and space-based observations and describe the main deficiencies in these methods especially for tracking the trough/plasmapause during storms and substorms. We discuss the ionospheric signature of plasmaspheric plumes and their relationship to trough/plasmapause signatures. We conclude with some new multi-instrument observations that help clarify the ionospheric trough signature during geomagnetically active periods.
Moldwin Mark
Sibanda P.
Yizengaw Endawoke
Zou Shengrong
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