Ion distributions upstream of earthward propagating dipolarization fronts

Details Ion distributions upstream of earthward propagating dipolarization fronts Ion distributions upstream of earthward propagating dipolarization fronts

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm13c2096z&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SM13C-2096

Physics

Plasma Physics

[2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions, [2744] Magnetospheric Physics / Magnetotail, [2764] Magnetospheric Physics / Plasma Sheet, [7807] Space Plasma Physics / Charged Particle Motion And Acceleration

Scientific paper

We present case studies of THEMIS multi-point observations on ion distributions in the magnetotail plasma sheet at various locations upstream of earthward propagating dipolarization fronts. Gradual enhancements of earthward-moving ion fluxes have been observed in the central plasma sheet ~ 30 seconds before front arrivals, a characteristic signature well explained in previous studies as front-reflected ions coexisting with the ambient population in a confined region characterized by their gyroradii over background Bz field. In the plasma sheet boundary layer, observations have shown the appearances of earthward moving ions a few more minutes earlier than their appearances in the central plasma sheet, indicating a larger accessibility region of front-reflected ions. As the magnetic field lines are predominantly in the x direction in the plasma sheet boundary layer, the reflected ions could move along the field lines and eventually result in auroral activities in the ionosphere. Numerical simulations, as well as theoretical analysis of ion dynamics, have been carried out to interpret the observed patterns of ion distributions, and to improve our understandings of interactions between earthward propagating fronts and the ambient plasma in the near-Earth magnetotail.

Affiliated with

Also associated with

No associations

Rating

Ion distributions upstream of earthward propagating dipolarization fronts 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 Ion distributions upstream of earthward propagating dipolarization fronts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ion distributions upstream of earthward propagating dipolarization fronts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1889685