Polarization, propagation and MHD wave modes of Pi2 pulsations - SABRE/SAMNET results

Details Polarization, propagation and MHD wave modes of Pi2 pulsations - SABRE/SAMNET results Polarization, propagation and MHD wave modes of Pi2 pulsations - SABRE/SAMNET results

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39..983y&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 39, July 1991, p. 983-998.

Computer Science

19

Auroral Zones, Geomagnetic Pulsations, Magnetohydrodynamic Waves, Magnetometers, Propagation Modes, Radar Measurement, Coherent Radar, Field Aligned Currents, Ionospheric Currents, Magnetic Signatures, Magnetic Storms

Scientific paper

The SABRE coherent radar has been employed in conjunction with the SAMNET magnetometer array to examine the wave characteristics of Pi2 pulsations at auroral/sub-auroral latitudes. The latitude ranges of the two systems have a small overlap, with the SABRE field of view being predominantly poleward of the magnetometer array. The Pi2 pulsations are here divided into two types. For waves in the SABRE field of view which have a compressional nature, as deduced by the ratio of the pulsation backscatter intensity to the pulsation line of sight Doppler velocity, similar wave period and propagation are observed on SABRE and SAMNET. These waves generally correlate with substorms where the SABRE/SAMNET system is distant from the substorm ionospheric currents, as deduced by the bays in the Z component magnetograms. In contrast two events have an Alfvenic mode structure in the SABRE field of view, with large ionospheric velocity modulations. These events have different periods and opposite azimuthal propagation on SABRE than at lower latitudes. The Alfvenic waves generally correlate with substorms breakups relatively close to the SABRE and SAMNET systems, as deduced from the Z component bays.

Affiliated with

Also associated with

No associations

Rating

Polarization, propagation and MHD wave modes of Pi2 pulsations - SABRE/SAMNET results 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 Polarization, propagation and MHD wave modes of Pi2 pulsations - SABRE/SAMNET results, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarization, propagation and MHD wave modes of Pi2 pulsations - SABRE/SAMNET results will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-863729