Estimating drift velocity of polar cap patches with all-sky airglow imager at Resolute Bay, Canada

Details Estimating drift velocity of polar cap patches with all-sky airglow imager at Resolute Bay, Canada Estimating drift velocity of polar cap patches with all-sky airglow imager at Resolute Bay, Canada

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3315111h&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 15, CiteID L15111

Physics

16

Ionosphere: Polar Cap Ionosphere, Ionosphere: Plasma Convection (2760), Ionosphere: Ionosphere/Magnetosphere Interactions (2736), Ionosphere: Ionospheric Irregularities, Ionosphere: Instruments And Techniques

Scientific paper

Highly sensitive all-sky airglow imager has been operative at Resolute Bay, Canada (74.73°N, 265.07°E AACGM latitude 82.9°) since January 2005. We present, as a first result from the imager, an event of polar cap patches drifting anti-sunward during the southward IMF conditions. Magnitude and direction of patch drift velocities are computed with a temporal resolution of 2 min by using the newly developed patch-tracking algorithm based on 2D cross correlation analysis. It is well visualized that the patches change their moving speed and direction drastically in a short time scale (a few minutes). Speed of the patch is primally controlled by the IMF Bz. Dawn-dusk component of the patch drift velocities is well correlated with the IMF By in agreement with published By dependence of the nightside polar cap convection. However, response of the patch drift direction to the IMF By is found to be much slower (~20 min) than that of the drift speed to the IMF Bz (almost instantaneous).

Affiliated with

Also associated with

No associations

Rating

Estimating drift velocity of polar cap patches with all-sky airglow imager at Resolute Bay, Canada 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 Estimating drift velocity of polar cap patches with all-sky airglow imager at Resolute Bay, Canada, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimating drift velocity of polar cap patches with all-sky airglow imager at Resolute Bay, Canada will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1780386