Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm33b1336e&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SM33B-1336
Physics
2740 Magnetospheric Configuration And Dynamics, 2778 Ring Current, 2784 Solar Wind/Magnetosphere Interactions, 2788 Magnetic Storms And Substorms (7954), 7954 Magnetic Storms (2788)
Scientific paper
We have investigated the ring current asymmetry during super-intense magnetic storms (peak Dst ¡Ü-250 nT). In order to conduct this study, we have used high-resolution low-latitude ground-based magnetometer data. After removing the Sq variation, the disturbance in the H component (dH) was determined for each observatory and each superstorm. For each superstorm, we determined the peak dH and local time of occurrence for each observatory. With this information, we obtained a distribuiton of local-time X dH for all the superstorms studied. We have observed that most of the superstorms have the peak in dH observed at the dusk sector, but for a few of them the peak occurs near mid-night sector. These results are compared with previous works concerning storms of different intensity levels.
Echer Ezequiel
Gonzalez Walter
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