Small-scale auroral Arc deformations

Details Small-scale auroral Arc deformations Small-scale auroral Arc deformations

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.8013w&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Oct. 1, 1983, p. 8013-8019.

Physics

33

Auroral Arcs, Magnetohydrodynamic Stability, Electric Potential, Electron Density (Concentration), Ion Density (Concentration), Mathematical Models

Scientific paper

An auroral arc undergoes various types of deformations, such as curls, folds and spirals. In this paper the formation mechanism of folds is examined by a plasma simulation method. It is suggested that folds, as well as curls, can arise from electrostatic shear-induced instabilities. The differences between the two forms are controlled by the presence of ambient ions that must be present to shield the electric field of the precipitating electron charge sheet. It is shown that curls form when the ion sheath thickness is large in comparison with the electron sheet. Folds form when the ion sheath is thin and lags slightly behind the electron guiding centers, setting up an additional electric field that controls the late stages of instability growth.

Affiliated with

Also associated with

No associations

Rating

Small-scale auroral Arc deformations 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 Small-scale auroral Arc deformations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Small-scale auroral Arc deformations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1193931