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Global ULF wave analysis of radial diffusion coefficients using a global MHD model for the 17 March 2015 storm

The 17\textendash18 March 2015 storm is the largest geomagnetic storm in the Van Allen Probes era to date. The Lyon-Fedder-Mobarry global MHD model has been run for this event using ARTEMIS data as solar wind input. The ULF wave power spectral density of the azimuthal electric field and compressional magnetic field is analyzed in the 0.5\textendash8.3 mHz range. The lowest three azimuthal modes account for 70\% of the total power during quiet times. However, during high activity, they are not exclusively dominant. The calcul ...

Li, Zhao; Hudson, Mary; Paral, Jan; Wiltberger, Michael; Turner, Drew;

YEAR: 2016     DOI: 10.1002/2016JA022508

March 2015; radial diffusion; radial diffusion coefficient; Radiation belt; ULF waves; Van Allen Probes