Patterns of Mid-Latitude Ionospheric Convection Based on Measurements From the Wallops Island HF Radar

Details Patterns of Mid-Latitude Ionospheric Convection Based on Measurements From the Wallops Island HF Radar Patterns of Mid-Latitude Ionospheric Convection Based on Measurements From the Wallops Island HF Radar

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsa33a..06b&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SA33A-06

Physics

2407 Auroral Ionosphere (2704), 2443 Midlatitude Ionosphere, 2463 Plasma Convection (2760), 2494 Instruments And Techniques

Scientific paper

We present the first SuperDARN statistical patterns of ionospheric convection compiled using Doppler plasma drift measurements from the new mid-latitude HF radar at Wallops Island, Virginia, which commenced operations in June 2005. The convection patterns are based on measurements obtained between June- October 2005. We analyze the effect that including Wallops Island data has on SuperDARN convection patterns, particularly during periods of heightened geomagnetic activity. To this end, we bin the data by the SYM-H magnetic index and produce convection patterns from datasets with and without Wallops Island measurements. Including the Wallops Island data significantly increases the dynamic range of the cross-polar potential measured by the SuperDARN radars: lower potentials during weak activity; higher potentials during enhanced activity. Including mid-latitude data also changes the morphology of the convection in the midnight sector during disturbed conditions by moving the separatrix between the dusk and dawn cells from pre- midnight to post-midnight.

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