Other
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsm43d..02z&link_type=abstract
American Geophysical Union, Spring Meeting 2005, abstract #SM43D-02
Other
2788 Storms And Substorms, 7513 Coronal Mass Ejections, 7519 Flares, 7531 Prominence Eruptions
Scientific paper
A systematic process of identifying solar sources of major geomagnetic storms is presented. From 1996 to 2004, there are 77 major geomagnetic storms (defined as Dst <= -100). For each of the 77 events, we make use combined remote-sensing solar observations and in-situ solar-wind data to identify their possible sources. The data include (1) solar wind plasma and magnetic observations in near-Earth space from ACE and WIND experiments, (2) solar CME observations from the LASCO (Large Angle and Spectrometric Coronagraph) on SOHO, (3) coronal observations from the EIT (Extreme Ultraviolet Imaging Telescope) on SOHO, and (4) other synoptic solar observations including flares and filament eruptions. Solar wind data are necessary in the identification process because it provides constraints on the duration of backward search window. A major geomagnetic storm may be caused by (1) a single halo CME, (2) multiple halo CMEs, or (3) CIR (corotating interaction region). The properties of those responsible solar events will be discussed.
Poomvises Watanachak
Zhang James J.
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