과제정보
This work was supported by the research grant of the Chungbuk National University in 2021. The author also gratefully acknowledges partial support of this research by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (2020R1A2C1013159). We thank the GSFC/SPDF OMNIWeb for providing the Kp index used in this study. The Van Allen Probe data are available from http://emfisis.physics.uiowa. edu/Flight and https://rbsp-ect.lanl.gov/data_pub. We thank the Van Allen Probes team, especially the EMFISIS and ECT teams.
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