Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 39, issue 3
Articles | Volume 39, issue 3
https://doi.org/10.5194/angeo-39-413-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-39-413-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 39, issue 3
Regular paper
 | 
12 May 2021
Regular paper |  | 12 May 2021

On the semi-annual variation of relativistic electrons in the outer radiation belt

Christos Katsavrias, Constantinos Papadimitriou, Sigiava Aminalragia-Giamini, Ioannis A. Daglis, Ingmar Sandberg, and Piers Jiggens

Related authors

Electron radiation belt safety indices based on the SafeSpace modelling pipeline and dedicated to the internal charging risk
Nour Dahmen, Antoine Brunet, Sebastien Bourdarie, Christos Katsavrias, Guillerme Bernoux, Stefanos Doulfis, Afroditi Nasi, Ingmar Sandberg, Constantinos Papadimitriou, Jesus Oliveros Fernandez, and Ioannis Daglis
Ann. Geophys., 41, 301–312, https://doi.org/10.5194/angeo-41-301-2023,https://doi.org/10.5194/angeo-41-301-2023, 2023
Short summary
The “SafeSpace” database of ULF power spectral density and radial diffusion coefficients: dependencies and application to simulations
Christos Katsavrias, Afroditi Nasi, Ioannis A. Daglis, Sigiava Aminalragia-Giamini, Nourallah Dahmen, Constantinos Papadimitriou, Marina Georgiou, Antoine Brunet, and Sebastien Bourdarie
Ann. Geophys., 40, 379–393, https://doi.org/10.5194/angeo-40-379-2022,https://doi.org/10.5194/angeo-40-379-2022, 2022
Short summary
Modeling of ion dynamics in the inner geospace during enhanced magnetospheric activity
C. Tsironis, A. Anastasiadis, C. Katsavrias, and I. A. Daglis
Ann. Geophys., 34, 171–185, https://doi.org/10.5194/angeo-34-171-2016,https://doi.org/10.5194/angeo-34-171-2016, 2016
Association of radiation belt electron enhancements with earthward penetration of Pc5 ULF waves: a case study of intense 2001 magnetic storms
M. Georgiou, I. A. Daglis, E. Zesta, G. Balasis, I. R. Mann, C. Katsavrias, and K. Tsinganos
Ann. Geophys., 33, 1431–1442, https://doi.org/10.5194/angeo-33-1431-2015,https://doi.org/10.5194/angeo-33-1431-2015, 2015
Short summary
Combined effects of concurrent Pc5 and chorus waves on relativistic electron dynamics
C. Katsavrias, I. A. Daglis, W. Li, S. Dimitrakoudis, M. Georgiou, D. L. Turner, and C. Papadimitriou
Ann. Geophys., 33, 1173–1181, https://doi.org/10.5194/angeo-33-1173-2015,https://doi.org/10.5194/angeo-33-1173-2015, 2015

Related subject area

Subject: Magnetosphere & space plasma physics | Keywords: Radiation belts
Electron radiation belt safety indices based on the SafeSpace modelling pipeline and dedicated to the internal charging risk
Nour Dahmen, Antoine Brunet, Sebastien Bourdarie, Christos Katsavrias, Guillerme Bernoux, Stefanos Doulfis, Afroditi Nasi, Ingmar Sandberg, Constantinos Papadimitriou, Jesus Oliveros Fernandez, and Ioannis Daglis
Ann. Geophys., 41, 301–312, https://doi.org/10.5194/angeo-41-301-2023,https://doi.org/10.5194/angeo-41-301-2023, 2023
Short summary
Comparison of radiation belts electron fluxes simultaneously measured with PROBA-V/EPT and RBSP/MagEIS instruments
Alexandre Winant, Viviane Pierrard, and Edith Botek
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2023-8,https://doi.org/10.5194/angeo-2023-8, 2023
Revised manuscript accepted for ANGEO
Short summary
The “SafeSpace” database of ULF power spectral density and radial diffusion coefficients: dependencies and application to simulations
Christos Katsavrias, Afroditi Nasi, Ioannis A. Daglis, Sigiava Aminalragia-Giamini, Nourallah Dahmen, Constantinos Papadimitriou, Marina Georgiou, Antoine Brunet, and Sebastien Bourdarie
Ann. Geophys., 40, 379–393, https://doi.org/10.5194/angeo-40-379-2022,https://doi.org/10.5194/angeo-40-379-2022, 2022
Short summary
Quantifying the non-linear dependence of energetic electron fluxes in the Earth's radiation belts with radial diffusion drivers
Adnane Osmane, Mikko Savola, Emilia Kilpua, Hannu Koskinen, Joseph E. Borovsky, and Milla Kalliokoski
Ann. Geophys., 40, 37–53, https://doi.org/10.5194/angeo-40-37-2022,https://doi.org/10.5194/angeo-40-37-2022, 2022
Short summary
Seasonal dependence of the Earth's radiation belt – new insights
Rajkumar Hajra
Ann. Geophys., 39, 181–187, https://doi.org/10.5194/angeo-39-181-2021,https://doi.org/10.5194/angeo-39-181-2021, 2021
Short summary
More articles (6)

Cited articles

Akasofu, S. I.: Energy coupling between the solar wind and the magnetosphere, 28, 121–190, https://doi.org/10.1007/BF00218810, 1981. a
Baker, D. N., Kanekal, S. G., Pulkkinen, T. I., and Blake, J. B.: Equinoctial and solstitial averages of magnetospheric relativistic electrons: A strong semiannual modulation, Geophys., Res. Lett., 26, 3193–3196, https://doi.org/10.1029/1999GL003638, 1999. a, b, c
Baker, D. N., Kanekal, S. G., Hoxie, V. C., Batiste, S., Bolton, M., Li, X., Elkington, S. R., Monk, S., Reukauf, R., Steg, S., Westfall, J., Belting, C., Bolton, B., Braun, D., Cervelli, B., Hubbell, K., Kien, M., Knappmiller, S., Wade, S., Lamprecht,B., Stevens, K., Wallace, J., Yehle, A., Spence, H. E., and Friedel, R.: The Relativistic Electron–Proton Telescope (REPT) instrument on board the Radiation Belt Storm Probes (RBSP) spacecraft: Characterization of Earth's radiation belt high–energy particle populations, Space Sci. Rev., 65, 1385–1398, https://doi.org/10.1007/s11214-012-9950-9, 2012. a
Blake, J. B., Carranza, P. A., Claudepierre, S. G., Clemmons, J. H., Crain, W. R, Dotan, Y., Fennell, J. F., Fuentes, F. H., Galvan, R. M., George, J. S., Henderson, M. G., Lalic, M., Lin, A. Y., Looper, M. D., Mabry, D. J., Mazur, J. E., McCarthy, B., Nguyen, C. Q., O'Brien, T. P., Perez, M. A., Redding, M. T., Roeder, J. L., Salvaggio, D. J., Sorensen, G. A., Spence, H. E., Yi, S., and Zakrzewski, M. P.: The Magnetic Electron Ion Spectrometer (MagEIS) instruments aboard the Radiation Belt Storm Probes (RBSP) spacecraft, Space Sci. Rev., 179, 383–421, https://doi.org/10.1007/s11214-013-9991-8, 2013. a
Bourdarie, S. and O'Brien, T. P.: International Radiation Belt Environment Modelling Library, Space Res. Today, 174, 27–28, https://doi.org/10.1016/j.srt.2009.03.006, 2009. a
More articles (40)
Download
Short summary
The nature of the semi-annual variation in the relativistic electron fluxes in the Earth's outer radiation belt has been a debate for over 30 years. Our work shows that it is primarily driven by the Russell–McPherron effect, which indicates that reconnection is responsible not only for the short-scale but also the seasonal variability of the electron belt as well. Moreover, it is more pronounced during the descending phase of the solar cycles and coexists with periods of fast solar wind speed.
Read more