Characterizing SMCs by the Balance of Reconnection Rates

Details Characterizing SMCs by the Balance of Reconnection Rates Characterizing SMCs by the Balance of Reconnection Rates

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm31a0291d&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM31A-0291

Physics

2407 Auroral Ionosphere (2704), 2723 Magnetic Reconnection (7526, 7835), 2740 Magnetospheric Configuration And Dynamics, 2784 Solar Wind/Magnetosphere Interactions, 2788 Magnetic Storms And Substorms (7954)

Scientific paper

Periods of enhanced magnetospheric convection without substorm signatures have been called Steady Magnetospheric Convection events (SMC). We have recently started investigating SMCs under the hypothesis that during these events dayside and nightside reconnection rates will balance. When this occurs the poleward auroral boundary, as measured by Polar UVI and IMAGE FUV images, should remain steady. If the boundary is steady for 3 hours or more and we see no substorm signatures, then the reconnection rates are fairly well balanced and we have an SMC. However, not all SMCs are perfectly balanced, some show a slow growth in polar cap area and some fail to begin or end with a substorm. We will investigate five different events: two in which the polar cap area is well balanced, one that has a slow growth in the area before a substorm, one that has no storm to begin the event, and one that dies out with no substorm. We will study the solar wind and IMF conditions both preceding and during the events to see what may cause these differences in the balancing of reconnection rates. We will also look at geosynchronous and Geotail data, when available, to study the conditions of the magnetosphere during the events.

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