Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm13a1653h&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM13A-1653
Physics
2455 Particle Precipitation, 2704 Auroral Phenomena (2407), 2721 Field-Aligned Currents And Current Systems (2409), 2736 Magnetosphere/Ionosphere Interactions (2431), 2740 Magnetospheric Configuration And Dynamics
Scientific paper
Both the field-aligned currents and particle precipitation play important roles in the magnetosphere- ionosphere coupling. The polarities and densities of large scale field-aligned currents from the DMSP magnetometer data 1983-2005 were determined using an automated algorithm. The particle precipitations often have characteristics that reflect their source regions in the magnetosphere, which led to the development of the automatic region identification schemes. The particle precipitation regions from the DMSP SSJ4 particle data were also determined from 1983-2005. The relationships between the field-aligned currents and the particle precipitation regions on the dayside were explored and identified. The ion westward and electron eastward drifts may contribute to the prenoon-postnoon asymmetry of the regions. The solar wind-magnetosphere coupling issues were investigated.
Higuchi Takeo
Ohtani Shin
Ueno Genta
Wing Simon
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