Radial Transport of Radiation Belt Electrons due to Variability of Solar Wind Parameters

Details Radial Transport of Radiation Belt Electrons due to Variability of Solar Wind Parameters Radial Transport of Radiation Belt Electrons due to Variability of Solar Wind Parameters

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm41c..02u&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM41C-02

Physics

2720 Energetic Particles: Trapped, 2730 Magnetosphere: Inner, 2774 Radiation Belts, 2778 Ring Current, 7845 Particle Acceleration

Scientific paper

During geomagnetic storms relativistic electron fluxes in Earth's radiation belt exhibit complex behavior. Flux levels after a storm may increase, decrease or stay similar to their pre-storm values. One of the dominant mechanisms responsible for variability of the belt is radial transport of electrons across their drift shells. Driven by oscillations of the inner magnetospheric fields capable of violating the third adiabatic invariant of trapped electrons, radial transport is commonly believed to be a diffusive process. According to recent modeling analysis, quasi-periodic changes in solar wind parameters induce large oscillations of inductive electric filed that can effectively scatter relativistic electrons. Associated with variations in global magnetospheric current systems, these oscillations are spatially coherent and thus result in a non-diffusive radial transport. In this study we investigate how propagation of fast magnetosonic waves affects radial transport in the belt. After wave fields are computed with a 2D ideal MHD model, a test particle approach is used to analyze electron motion due to these waves. Two basic questions are addressed: (1) can magnetosonic waves be an important driver of radial transport? (2) do transient wave fields break spatial coherence of large-scale field oscillations and thus lead to a diffusive radial transport?

Affiliated with

Also associated with

No associations

Rating

Radial Transport of Radiation Belt Electrons due to Variability of Solar Wind Parameters 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 Radial Transport of Radiation Belt Electrons due to Variability of Solar Wind Parameters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial Transport of Radiation Belt Electrons due to Variability of Solar Wind Parameters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-973627