Geomagnetic activity dependence of the inner magnetospheric proton distribution: An empirical approach for the 21-25 April 2001 storm

Details Geomagnetic activity dependence of the inner magnetospheric proton distribution: An empirical approach for the 21-25 April 2001 storm Geomagnetic activity dependence of the inner magnetospheric proton distribution: An empirical approach for the 21-25 April 2001 storm

Nov 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jgra..11111s13m&link_type=abstract

Journal of Geophysical Research, Volume 111, Issue A11, CiteID A11S13

Physics

3

Magnetospheric Physics: Energetic Particles: Trapped, Magnetospheric Physics: Magnetosphere: Inner, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions, Magnetospheric Physics: Magnetic Storms And Substorms (7954), Space Weather: Magnetic Storms (2788)

Scientific paper

The empirical approach in global modeling the proton distributions of the inner magnetosphere (Orsini et al., 2004) is here applied for a detailed analysis of the 21-25 April 2001 storm. This method, based on comparison of the Milillo et al. (2001) model with local proton spectra, results as a simple and powerful tool for inner magnetospheric studies. In this work we use the Los Alamos National Laboratory proton spectra in order to obtain the time-evolving model parameters at different magnetic local times (MLT). We compare the model parameters with the geomagnetic indexes as well as with the solar wind data. The final outcome of this study is the analysis of the evolution of the magnetospheric populations during storms. This analysis shows that specific local characteristics of the proton fluxes, as the width of proton spectra, can be interpreted as global plasma distributions tracers. Furthermore, their temporal evolution is recurrent during any storm development, depending on solar wind characteristics. In particular, this study suggests the existence of a MLT-dependent time delay between the solar wind disturbance arrival and the broadening of the energy spectra of proton fluxes in the inner magnetosphere. Finally, the model shows how the particles convected or injected from the nightside during storm main phase quickly decay or diffuse gaining energy so that the diffused particles play a major role during the recovery phase.

Affiliated with

Also associated with

No associations

Rating

Geomagnetic activity dependence of the inner magnetospheric proton distribution: An empirical approach for the 21-25 April 2001 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 Geomagnetic activity dependence of the inner magnetospheric proton distribution: An empirical approach for the 21-25 April 2001 storm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Geomagnetic activity dependence of the inner magnetospheric proton distribution: An empirical approach for the 21-25 April 2001 storm will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1339304