Coupling Processes in the Inner Magnetosphere Associated with Midlatitude Red Auroras during Superstorms

Details Coupling Processes in the Inner Magnetosphere Associated with Midlatitude Red Auroras during Superstorms Coupling Processes in the Inner Magnetosphere Associated with Midlatitude Red Auroras during Superstorms

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm12b..03k&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SM12B-03

Physics

2730 Magnetosphere: Inner, 2736 Magnetosphere/Ionosphere Interactions, 2788 Storms And Substorms

Scientific paper

During recent superstorms, observations from IMAGE, Iridium, FAST, DMSP, TIMED, LANL Geo and ground-based photometers at vantage points throughout the geospace system are used to investigate, for the first time, features that map from the inner magnetosphere to strong red emissions at mid-latitudes, reaching as far equatorward as 33 deg MLAT. At the lowest latitudes, emissions have very little structure being described as a diffuse but intense red glow. The observations imply that these visible unstructured mid-latitude emissions are in fact extreme stable auroral red (SAR) arcs, and that large-scale coupling processes, within the inner magnetosphere are key to producing an enhanced energy source to drive SAR-arc intensities into the visible range. This presentation will focus on the 31 March 2001 and 11 April 2001 extreme events but draw upon a larger set of storms for supporting observations. New questions raised by these observations, as well as initial modeling results, will be presented.

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