Abstract
The correlation between the parameters of electromagnetic ion cyclotron waves in Earth’s magnetosphere and the parameters of trapped and precipitating ring current ions is analyzed using the example of a single event. It is shown that the observed energies and the degree of isotropy of proton fluxes at low altitudes correspond to the results from calculating the coefficient of pitch-angle diffusion using data on ion cyclotron wave parameters.
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ACKNOWLEDGMENTS
We thank the creators of the Van Allen Probe satellite and instrument developers for allowing free access to their data (Craig Kletzing, EMFISIS, John Wygant, EFW, Geoff Reeves, HOPE, and Luis Lanzerotti, RBSPICE); NOAA for their free access to the POES satellite data at https://www.ngdc.noaa.gov/stp/satellite/poes/; and Johns Hopkins University’s Applied Physics Laboratory for providing DMSP satellite (http://ssusi.jhuapl.edu) and ground magnetometer data (http://supermag.jhuapl.edu).
Funding
This work was performed as part of a State Task for the Polar Geophysical Institute, project no. AAAA-A18-118012490100-7.
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Translated by O. Pismenov
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Popova, T.A., Demekhov, A.G. & Yahnin, A.G. Proton Precipitation and Electromagnetic Ion Cyclotron Waves Associated with Substorm Injections. Bull. Russ. Acad. Sci. Phys. 85, 292–297 (2021). https://doi.org/10.3103/S1062873821030199
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DOI: https://doi.org/10.3103/S1062873821030199