Substorm onset observations by IMAGE-FUV: Southern Hemisphere 2003-2005

Details Substorm onset observations by IMAGE-FUV: Southern Hemisphere 2003-2005 Substorm onset observations by IMAGE-FUV: Southern Hemisphere 2003-2005

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm31a0388f&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM31A-0388

Physics

2704 Auroral Phenomena (2407), 2716 Energetic Particles: Precipitating, 2736 Magnetosphere/Ionosphere Interactions (2431), 2788 Magnetic Storms And Substorms (7954), 2790 Substorms

Scientific paper

Over the first 2.5 years of operation (May 2000 to December 2002), the FUV instrument on the IMAGE spacecraft observed more than 2400 substorm onsets in the Northern Hemisphere. The list of all observed onset is published in [Frey et al., 2004]. In 2003, the fast migration of the line of apsides (50° per year) moved the IMAGE orbit apogee across the equator into the southern hemisphere. 1300 substorm onsets could be detected between the ~2.5 years of January 2003 to April 2005. Most of them were made in the Southern Hemisphere. Here we compare the major properties of the southern substorm onsets (absolute value of the onset geomagnetic latitude and MLT) with the results from the northern hemisphere. We find similar values, regardless of the different phases within the solar cycle for both data sets.

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