Magnetospheric waves and the atmosphere-ionosphere layer

Details Magnetospheric waves and the atmosphere-ionosphere layer Magnetospheric waves and the atmosphere-ionosphere layer

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9621125h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Dec. 1, 1991, p. 21,125-21,134.

Physics

13

Earth Magnetosphere, Geomagnetic Micropulsations, Ionospheric Conductivity, Ionospheric Currents, Magnetohydrodynamic Waves, Boundary Conditions, Current Sheets, Magnetosonic Resonance, Wavelengths

Scientific paper

A novel approach to the issue of what effect the ionosphere and atmosphere have on magnetospheric phenomena, an approach that provides explicit boundary conditions for coupled hydromagnetic waves and makes it possible to give an explicit solution to the pulsation problem within a particularly simple configuration, is presented. It is shown that, consistent with well-known observations, the amplitude of resonantly excited micropulsations is much larger in the dayside magnetosphere than in the nightside because of the larger dayside ionospheric conductivity. It is argued that the efficiency of wave damping by the low-conductivity nightside ionosphere is not a convincing explanation of this phenomenon. The present alternative interpretation is that the Alfven resonances are not efficiently excited where the inospheric conductivity is low because boundary conditions impose different field-aligned structure on the compressional and transverse parts of a signal. The differences diminish as the conductivity increases, allowing resonant coupling to become efficient.

Affiliated with

Also associated with

No associations

Rating

Magnetospheric waves and the atmosphere-ionosphere layer 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 waves and the atmosphere-ionosphere layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetospheric waves and the atmosphere-ionosphere layer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1539766