Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsa21b0443m&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SA21B-0443
Physics
2700 Magnetospheric Physics, 2704 Auroral Phenomena (2407), 2788 Storms And Substorms
Scientific paper
Major magnetic storm activity was detected between April 17 and 20, 2002. Precipitating electron spectral data from DMSP satellites (F12 through F15) were used to identify boundary of the auroral oval during the storm period. The boundaries for MLT between 18:00 and 06:00 (night side) were scaled to define the auroral oval boundaries at 24:00 MLT. There was a good agreement between the calculated change in the 24:00 MLT boundary and Dst, IMF Bz, AE index, and auroral hemispheric power. We have investigated the relation between the boundary and state of the magnetosphere. The boundaries calculated from the DMSP satellites electron spectra also agree well with those obtained from TIMED/GUVI observations. The mechanism behind this phenomenon and its application will be discussed.
Christensen Andrew B.
Meng Ching I.
Newell Patrick T.
Paxton Larry J.
Sotirelis Thomas S.
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