Ionospheric Echoes With High Velocities and Very Narrow Spectral Widths Observed by the Syowa SuperDARN Radars During High Geomagnetic Activity

Details Ionospheric Echoes With High Velocities and Very Narrow Spectral Widths Observed by the Syowa SuperDARN Radars During High Geomagnetic Activity Ionospheric Echoes With High Velocities and Very Narrow Spectral Widths Observed by the Syowa SuperDARN Radars During High Geomagnetic Activity

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm31a0740n&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM31A-0740

Physics

2411 Electric Fields (2712), 2439 Ionospheric Irregularities, 2475 Polar Cap Ionosphere, 2736 Magnetosphere/Ionosphere Interactions, 2788 Storms And Substorms

Scientific paper

The spectral width of the ionospheric backscatter echoes obtained with the SuperDARN radars has been regarded as a useful tool for locating specific ionospheric regions such as the cusp. In this paper we report the presence of ionospheric echoes with high (> 400 m/s) Doppler velocity and very narrow (< 50 m/s) spectral width, observed by the Syowa East and South SuperDARN radars. These echoes have the following characteristics. (1) They have close correlation with geomagnetic activity; with the decrease of the Dst index, the radars tend to observe ionospheric echoes with high Doppler velocity and very narrow spectral width more frequently. (2) Their existence does not depend on magnetic local time. (3) They are located preferably in the polar cap region, where anti-sunward convection prevails. (4) They sometimes exist over a wide range, so they are more likely to be F-region echoes than E-region ones. Detailed discussion of the generation mechanisms of such kind of echoes with high velocity and very narrow spectral width will be presented.

Affiliated with

Also associated with

No associations

Rating

Ionospheric Echoes With High Velocities and Very Narrow Spectral Widths Observed by the Syowa SuperDARN Radars During High Geomagnetic Activity 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 Ionospheric Echoes With High Velocities and Very Narrow Spectral Widths Observed by the Syowa SuperDARN Radars During High Geomagnetic Activity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ionospheric Echoes With High Velocities and Very Narrow Spectral Widths Observed by the Syowa SuperDARN Radars During High Geomagnetic Activity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1384000