Type IPDP magnetic pulsations and the development of their sources

Details Type IPDP magnetic pulsations and the development of their sources Type IPDP magnetic pulsations and the development of their sources

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.6204p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Aug. 1, 1983, p. 6204-6212. Research supported by the Finnish-Soviet

Physics

11

Geomagnetic Pulsations, Ion Cyclotron Radiation, Magnetohydrodynamic Stability, Magnetospheric Instability, Particle Interactions, Plasma Interactions, Magnetic Storms, Plasma Waves, Plasmapause

Scientific paper

Intervals of pulsations of diminishing periods (IPDP) magnetic pulsation data have been analyzed from several recording campaigns and from stations that are widely spaced in both meridional and azimuthal directions. On the basis of their local time occurrence it seems useful to divide the events into at least two main categories: LT = 1400-1800 and 1800-2400. Those events which are only observed at auroral latitudes typically develop slowly and extend at the most to 1 Hz, whereas those events that are observed at a low-latitude station may extend to several Hz. Simultaneous observations at several meridians extending over 100 deg show that the IPDP source region moves from east to west at a speed of 2-5 deg/min. There are necessarily no remarkable changes in frequency-time characteristics of IPDP pulsations. In the radial direction, IPDP wave frequency seems to be related to the He(+) gyrofrequency in the equatorial plane. Observations are shown to be in general agreement with the evolution of the ion cyclotron instability in the plasma convection system of the magnetosphere. Several mechanisms seem to contribute simultaneously to the frequency shift of pulsations during IPDP events.

Affiliated with

Also associated with

No associations

Rating

Type IPDP magnetic pulsations and the development of their sources 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 Type IPDP magnetic pulsations and the development of their sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Type IPDP magnetic pulsations and the development of their sources will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-748476