The Dynamic Reconnection-Driven Polar Cap as seen by HF Radar (PolarDARN)

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2723 Magnetic Reconnection (7526, 7835), 2736 Magnetosphere/Ionosphere Interactions (2431), 2760 Plasma Convection (2463), 2776 Polar Cap Phenomena, 2784 Solar Wind/Magnetosphere Interactions

Scientific paper

The SuperDARN HF radar pair (called PolarDARN) at Rankin Inlet (73.2° AACGM LAT) and Inuvik (71.2° AACGM LAT) is now fully operational (Rankin, May 2006 and Inuvik, Nov. 2007). For the first time, detailed two-dimensional radar convection maps of the polar cap region and poleward portion of the auroral oval are available with a one-minute time resolution. These radar images show clearly the signature of reconnection in the proximity of the ionospheric mapping of the OCFLB (open-closed field line boundary). Near magnetic noon (midnight), high-speed flows into (out of) the polar cap, away from (toward) the radars, are seen regularly, presumably mapping the fast outflows from the dayside and nightside reconnection regions. The convection maps reveal a very dynamic polar cap, with substantial changes in the convection pattern from one minute to the next. Examples of the reconnection-driven convection are presented, for By-dominant conditions and for both Bz+ and Bz- IMF conditions. The noon region for Bz+ conditions appears to be the counterpart of the auroral proton spot seen clearly with the IMAGE FUV instrument (Frey et al., JGR, 107, A7, 2002; Fusilier et al., JGR, 107, A7, 2002; Frey et al., Nature, 426, 533, 2003; Phan et al., GRL, 30, 10, 2003).

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

The Dynamic Reconnection-Driven Polar Cap as seen by HF Radar (PolarDARN) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Dynamic Reconnection-Driven Polar Cap as seen by HF Radar (PolarDARN), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Dynamic Reconnection-Driven Polar Cap as seen by HF Radar (PolarDARN) will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1421090

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.