Physics – Plasma Physics
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...100.9585z&link_type=abstract
Journal of Geophysical Research, Volume 100, Issue A6, p. 9585-9590
Physics
Plasma Physics
2
Magnetospheric Physics: Mhd Waves And Instabilities, Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Space Plasma Physics: Waves And Instabilities
Scientific paper
We present a ray-tracing study of the propagation of Pc 3 Alfvén mode waves originating at the dayside magnetopause. This study reveals interesting features of a magnetospheric filter effect for these waves. Pc 3 Alfvén mode waves cannot penetrate to low Earth altitudes unless the wave frequency is below approximately 30 mHz. Configurations of the dispersion curves and the refractive index, show that the gyroresonance and pseudo-cutoff introduced by the heavy ion O+ block the waves. When the O+ concentration is removed from the plasma composition, the barriers caused by the O+ no longer exist, and waves with much higher frequencies than 30 mHz can penetrate to low altitudes. The result that the 30-mHz or lower frequency Alfvén waves can be guided to low altitudes agrees with ground-based power spectrum observations at high latitudes.
Comfort Richard H.
Gallagher Dennis L.
Green James L.
Moore Thomas Earle
Musielak Zdzislaw E.
No associations
LandOfFree
Magnetospheric filter effect for Pc 3 Alfvén mode waves 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 Magnetospheric filter effect for Pc 3 Alfvén mode waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetospheric filter effect for Pc 3 Alfvén mode waves will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-755385