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1 MeV Electron Dynamics in the Outer Radiation Belt during Geomagnetic Storms on September 7–8, 2017

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

A study is performed of two successive geomagnetic storms that developed under similar conditions but differed by the presence (in the first storm) and absence (in the second storm) of rapid weakening of the relativistic electron flux (dropout) during the main storm phase. It is concluded that the second storm dropout was compensated for by the acceleration of energetic electrons during powerful geomagnetic disturbances that accompanied the storms.

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ACKNOWLEDGMENTS

SuperMAG geomagnetic indices were obtained from the website https://supermag.jhuapl.edu. We thank the participants of the SuperMAG project (https://supermag.jhuapl.edu/info/?page=acknowledgement) for the data used in calculating these indices. ULF index data are available at the website of the Russian Academy of Sciences’ Geophysical Center (http://ulf.gcras.ru/plot_ulf.html). NOAA POES and MetOp satellite data are available at the website https://www.ngdc.noaa.gov/stp/satellite/poes/dataaccess.html. Meteop-M1 satellite data are available at the website of Moscow State University’s Skobel’tsyn Research Institute of Nuclear Physics Center for Space Weather Analysis (http://swx.sinp.msu.ru). The Van Allen Probes satellite data used in this work were obtained at the websites https://emfisis.physics.uiowa.edu/data/index (EMFISIS) and https://www.RBSP-ect.lanl.gov (MagEIS). We thank the leaders and participants of satellite projects and website developers for free access to their data.

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Authors and Affiliations

  1. Polar Geophysical Institute, 184209, Apatity, Russia

    A. G. Yahnin & T. A. Yahnina

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  1. A. G. Yahnin
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  2. T. A. Yahnina
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Correspondence to A. G. Yahnin.

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Translated by E. Maslennikova

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Yahnin, A.G., Yahnina, T.A. 1 MeV Electron Dynamics in the Outer Radiation Belt during Geomagnetic Storms on September 7–8, 2017. Bull. Russ. Acad. Sci. Phys. 86, 275–280 (2022). https://doi.org/10.3103/S1062873822030273

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  • DOI: https://doi.org/10.3103/S1062873822030273

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