Physics
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88..381l&link_type=abstract
Journal of Geophysical Research, vol. 88, Jan. 1, 1983, p. 381-394.
Physics
29
Auroral Zones, Collisionless Plasmas, Ion Acoustic Waves, Plasma-Particle Interactions, Solitary Waves, Doppler Effect, Ion Motion, Ionospheric Ion Density, Plasma Layers, Propagation Velocity
Scientific paper
A theory of spiky electric fields in 'inverted V' precipitation regions is elaborated and compared with recent spacecraft observations of solitary waves and double layers. A prediction from the theory is that the electric fields propagate along the magnetic field as perturbed ion acoustic solitons that intensify by exchanging momentum with reflected particles. The solitons have minimum scale lengths of approximately 100 m and maximum electric potential and field amplitudes of 1-10 V and 1-10 mV/m. They propagate at the local ion acoustic speed and are Doppler-shifted by the drift speed of upward flowing cold ions. Both rarefactive and compressive solitons with, respectively, negative and positive electric potentials are possible. It is noted that upward propagating compressive modes intensify when the upward flow of ionospheric ions exceeds approximately 10 times the local ion acoustic speed. The kinematic and dynamic properties of rarefactive solitons are found to be consistent with recent observations.
Kennel Charles F.
Lotko William
No associations
LandOfFree
Spiky ion acoustic waves in collisionless auroral plasma 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 Spiky ion acoustic waves in collisionless auroral plasma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spiky ion acoustic waves in collisionless auroral plasma will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1197417