Polar Cap Dynamics and the PolarDARN radars: Status, rationale, first results

Details Polar Cap Dynamics and the PolarDARN radars: Status, rationale, first results Polar Cap Dynamics and the PolarDARN radars: Status, rationale, first results

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm11d..04s&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM11D-04

Physics

2712 Electric Fields (2411), 2721 Field-Aligned Currents And Current Systems (2409), 2723 Magnetic Reconnection (7526, 7835), 2760 Plasma Convection (2463), 2776 Polar Cap Phenomena

Scientific paper

PolarDARN consists of a pair of HF radars located so as to focus on the dynamics of convection in the polar cap and the poleward edge of the auroral oval. Being an extension of the SuperDARN network, the primary objectives are to study convection (electric fields), radio scattering conditions and field-aligned currents. PolarDARN will act as the coherent radar complement to the AMISR Resolute Bay (MLAT 83.9° N) ISR radars. The PolarDARN radar locations are Rankin Inlet (MLAT 73.1° N) and Inuvik (MLAT 71.2° N). The Rankin Inlet radar became operational May 11, 2006. The radar has operated very successfully during the quiet solar wind conditions at the end of Solar Cycle 23. In spite of the often extremely quiet conditions, the radar is providing virtually continuous echoes 24 hours a day. The bulk of these are from an antisunward flow stream at the equatorward edge of the polar cap and/or poleward edge of the auroral oval, rather than from the interior of the polar cap. A brief discussion of these initial PolarDARN results and their relationship to predictions about high-latitude convection will be presented.

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