Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm43b..07d&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM43B-07
Physics
2720 Energetic Particles: Trapped, 2730 Magnetosphere: Inner, 2752 Mhd Waves And Instabilities (2149, 6050, 7836), 2774 Radiation Belts, 7845 Particle Acceleration
Scientific paper
Ground-based observations during an interval of narrow-band ULF activity following a geomagnetic storm on November 25, 2001 are used to constrain the temporal and spatial characteristics of waves produced by a global model for ULF waves in the magnetosphere. This event is characterized by a long interval of high solar wind speed, and a strong field line resonance (FLR) localized to the local dusk sector. Both Polar and Cluster satellite observations during the interval of interest indicate that MHD fast waves produced by the Kelvin-Helmholtz instability along the dusk magnetopause flank are the likely source of wave power for the FLR. Based on this interpretation, an anti-sunward propagating ULF wave source is prescribed along the magnetopause boundary of the ULF wave model. The model is constrained by adjusting parameters that specify the source power distribution and bandwidth to improve local comparisons between the model output and observed time-series for field lines mapping to ground-based magnetometer stations. In order to assess the effects of these ULF waves on the relativistic electron population within the magnetosphere, the output from the ULF wave model is used to provide a time dependent magnetic field input for the bounce-averaged electron dynamics model developed by M-C Fok. This model computes the non-diffusive transport of electron phase space density (PSD) due to electrostatic and electromagnetic perturbations, assuming initial and outer boundary conditions for PSD that are dependent on solar wind parameters. The first results of this study will be presented.
Degeling A. W.
Jonathan Rae I.
Khazanov George V.
Rankin Robert
No associations
LandOfFree
Global modeling of Pc5 ULF Wave Activity and Relativistic Electron Dynamics following a Large Geomagnetic Storm 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 Global modeling of Pc5 ULF Wave Activity and Relativistic Electron Dynamics following a Large Geomagnetic Storm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Global modeling of Pc5 ULF Wave Activity and Relativistic Electron Dynamics following a Large Geomagnetic Storm will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1098084