Other
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusmsa24a..03b&link_type=abstract
American Geophysical Union, Spring Meeting 2009, abstract #SA24A-03
Other
2407 Auroral Ionosphere (2704), 2411 Electric Fields (2712), 2431 Ionosphere/Magnetosphere Interactions (2736), 2443 Midlatitude Ionosphere, 2463 Plasma Convection (2760)
Scientific paper
The Super Dual Auroral Radar Network (SuperDARN) of coherent scatter radars provides measurements of ionospheric electric fields, plasma structuring, acoustic gravity waves, mesospheric winds, and other effects in the coupled magnetosphere - ionosphere - atmosphere system. These measurements are obtained continuously and provide high time resolution over extended spatial scales. The original array of SuperDARN radars was constructed at magnetic latitudes near 60 degrees to optimize the spatial coverage during moderate levels of geomagnetic activity. In recent years there has been a simultaneous expansion of the network to higher and lower latitudes. New radars at middle latitudes have increased the capabilities for SuperDARN to measure ionospheric convection during enhanced levels of geomagnetic activity, such as magnetic storms. In addition, the mid-latitude radars are able to monitor influences in the sub-auroral ionosphere in the vicinity of the plasmapause during quiet times. In this presentation I will provide an overview of how the SuperDARN radars are providing valuable new information about: (1) the expansion of geomagnetic effects from high-latitudes to middle latitudes during magnetic storms; (2) subauroral polarization plasma streams and associated electric fields; and (3) substorm effects at middle latitudes.
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