Burton, R. K., McPherron, R. L., and Russell, C. T.: An empirical relationship
between interplanetary conditions and Dst, J. Geophys. Res.-Space, 80,
4204–4214,
https://doi.org/10.1029/JA080i031p04204, 1975.
a
Cliver, E. W., Kamide, Y., and Ling, A. G.: Mountains versus valleys:
Semiannual variation of geomagnetic activity, J. Geophys. Res.-Space, 105,
2413–2424,
https://doi.org/10.1029/1999JA900439, 2000.
a
Cliver, E. W., Svalgaard, L., and Ling, A. G.: Origins of the semiannual variation of geomagnetic activity in 1954 and 1996, Ann. Geophys., 22, 93–100,
https://doi.org/10.5194/angeo-22-93-2004, 2004.
a
Cnossen, I. and Richmond, A. D.: How changes in the tilt angle of the
geomagnetic dipole affect the coupled magnetosphere-ionosphere-thermosphere
system, J. Geophys. Res.-Space, 117, A10317,
https://doi.org/10.1029/2012JA018056, 2012.
a
Cortie, A. L.: Sun-spots and Terrestrial Magnetic Phenomena, 1898–1911:
the Cause of the Annual Variation in Magnetic Disturbances, Mon. Not. R.
Astron. Soc., 73, 52–60,
https://doi.org/10.1093/mnras/73.1.52, 1912.
a
Fennell, J. F., Claudepierre, S. G., Blake, J. B., O'Brien, T. P., Clemmons, J. H., Baker, D. N., Spence, H. E., and Reeves, G. D.: Van Allen Probes show
that the inner radiation zone contains no MeV electrons: ECT/MagEIS data,
Geophys. Res. Lett., 42, 1283–1289,
https://doi.org/10.1002/2014GL062874, 2015.
a
Finch, I. D., Lockwood, M. L., and Rouillard, A. P.: Effects of solar wind
magnetosphere coupling recorded at different geomagnetic latitudes:
Separation of directly-driven and storage/release systems, Geophys. Res.
Lett., 35, L21105,
https://doi.org/10.1029/2008GL035399, 2008.
a
Foster, J. C., Erickson, P. J., Omura, Y., Baker, D. N., Kletzing, C. A., and
Claudepierre, S. G.: Van Allen Probes observations of prompt MeV radiation
belt electron acceleration in nonlinear interactions with VLF chorus, J.
Geophys. Res.-Space, 122, 324–339,
https://doi.org/10.1002/2016JA023429, 2017.
a
Hajra, R. and Tsurutani, B. T.: Chapter 14 – Magnetospheric “Killer” Relativistic Electron Dropouts (REDs) and Repopulation: A Cyclical Process,
in: Extreme Events in Geospace: Origins, Predictability, and Consequences,
edited by: Buzulukova, N., Elsevier, the Netherlands, 373–400,
https://doi.org/10.1016/B978-0-12-812700-1.00014-5, 2018.
a
Hajra, R., Echer, E., Tsurutani, B. T., and Gonzalez, W. D.: Solar cycle
dependence of High-Intensity Long-Duration Continuous AE Activity (HILDCAA)
events, relativistic electron predictors?, J. Geophys. Res.-Space, 118,
5626–5638,
https://doi.org/10.1002/jgra.50530, 2013.
a
Hajra, R., Echer, E., Tsurutani, B. T., and Gonzalez, W. D.: Superposed epoch
analyses of HILDCAAs and their interplanetary drivers: Solar cycle and
seasonal dependences, J. Atmos. Sol.-Terr. Phy., 121, 24–31,
https://doi.org/10.1016/j.jastp.2014.09.012, 2014a.
a
Hajra, R., Tsurutani, B. T., Echer, E., and Gonzalez, W. D.: Relativistic
electron acceleration during high-intensity, long-duration, continuous AE
activity (HILDCAA) events: Solar cycle phase dependences, Geophys. Res.
Lett., 41, 1876–1881,
https://doi.org/10.1002/2014GL059383, 2014b.
a
Hajra, R., Tsurutani, B. T., Echer, E., Gonzalez, W. D., Brum, C. G. M.,
Vieira, L. E. A., and Santolik, O.: Relativistic electron acceleration during
HILDCAA events: are precursor CIR magnetic storms important?, Earth Planets
Space, 67, 109,
https://doi.org/10.1186/s40623-015-0280-5, 2015a.
a
Hajra, R., Tsurutani, B. T., Echer, E., Gonzalez, W. D., and Santolik, O.:
Relativistic (E
> 0.6,
>2.0, and
>4.0 MeV) electron acceleration at
geosynchronous orbit during high-intensity, long-duration, continuous AE
activity (HILDCAA) events, Astrophys. J., 799, 39,
https://doi.org/10.1088/0004-637x/799/1/39, 2015b.
a
Hajra, R., Tsurutani, B. T., and Lakhina, G. S.: The Complex Space Weather
Events of 2017 September, Astrophys. J., 899, 3,
https://doi.org/10.3847/1538-4357/aba2c5, 2020.
a
Horne, R. B. and Thorne, R. M.: Potential waves for relativistic electron
scattering and stochastic acceleration during magnetic storms, Geophys. Res.
Lett., 25, 3011–3014,
https://doi.org/10.1029/98GL01002, 1998.
a
Horne, R. B. and Thorne, R. M.: Relativistic electron acceleration and
precipitation during resonant interactions with whistler-mode chorus,
Geophys. Res. Lett., 30,
https://doi.org/10.1029/2003GL016973, 2003.
a
Horne, R. B., Glauert, S. A., Meredith, N. P., Boscher, D., Maget, V.,
Heynderickx, D., and Pitchford, D.: Space weather impacts on satellites and
forecasting the Earth's electron radiation belts with SPACECAST, Space
Weather, 11, 169–186,
https://doi.org/10.1002/swe.20023, 2013.
a
Inan, U. S., Bell, T. F., and Helliwell, R. A.: Nonlinear pitch angle
scattering of energetic electrons by coherent VLF waves in the magnetosphere, J. Geophys. Res.-Space, 83, 3235–3253,
https://doi.org/10.1029/JA083iA07p03235, 1978.
a
Iucci, N., Levitin, A. E., Belov, A. V., Eroshenko, E. A., Ptitsyna, N. G.,
Villoresi, G., Chizhenkov, G. V., Dorman, L. I., Gromova, L. I., Parisi, M.,
Tyasto, M. I., and Yanke, V. G.: Space weather conditions and spacecraft
anomalies in different orbits, Space Weather, 3, S01001,
https://doi.org/10.1029/2003SW000056,
2005.
a
Kanekal, S. G., Baker, D. N., and McPherron, R. L.: On the seasonal dependence of relativistic electron fluxes, Ann. Geophys., 28, 1101–1106,
https://doi.org/10.5194/angeo-28-1101-2010, 2010.
a,
b
Li, W., Thorne, R. M., Bortnik, J., Baker, D. N., Reeves, G. D., Kanekal, S. G., Spence, H. E., and Green, J. C.: Solar wind conditions leading to
efficient radiation belt electron acceleration: A superposed epoch analysis,
Geophys. Res. Lett., 42, 6906–6915,
https://doi.org/10.1002/2015GL065342, 2015.
a
Li, X., Baker, D. N., Kanekal, S. G., Looper, M., and Temerin, M.: Long term
measurements of radiation belts by SAMPEX and their variations, Geophys. Res.
Lett., 28, 3827–3830,
https://doi.org/10.1029/2001GL013586, 2001.
a,
b
Li, X., Temerin, M., Baker, D. N., and Reeves, G. D.: Behavior of MeV electrons
at geosynchronous orbit during last two solar cycles, J. Geophys. Res.-Space,
116, A11207,
https://doi.org/10.1029/2011JA016934, 2011.
a
Lockwood, M., Owens, M. J., Barnard, L. A., Haines, C., Scott, C. J.,
McWilliams, K. A., and Coxon, J. C.: Semi-annual, annual and Universal Time
variations in the magnetosphere and in geomagnetic activity: 1. Geomagnetic
data, J. Space Weather Spac., 10, 23,
https://doi.org/10.1051/swsc/2020023, 2020.
a
Matsui, H., Torbert, R. B., Spence, H. E., Argall, M. R., Alm, L., Farrugia, C. J., Kurth, W. S., Baker, D. N., Blake, J. B., Funsten, H. O., Reeves, G. D., Ergun, R. E., Khotyaintsev, Y. V., and Lindqvist, P.-A.: Relativistic
Electron Increase During Chorus Wave Activities on the 6–8 March 2016
Geomagnetic Storm, J. Geophys. Res.-Space, 122, 11302–11319,
https://doi.org/10.1002/2017JA024540, 2017.
a
Mauk, B. H., Fox, N. J., Kanekal, S. G., Kessel, R. L., Sibeck, D. G., and
Ukhorskiy, A.: Science Objectives and Rationale for the Radiation Belt Storm
Probes Mission, Space Sci. Rev., 179, 3–27,
https://doi.org/10.1007/s11214-012-9908-y,
2013.
a
Miyoshi, Y. and Kataoka, R.: Solar cycle variations of outer radiation belt and
its relationship to solar wind structure dependences, J. Atmos. Sol.-Terr.
Phy., 73, 77–87,
https://doi.org/10.1016/j.jastp.2010.09.031, 2011.
a
Mursula, K., Tanskanen, E., and Love, J. J.: Spring-fall asymmetry of substorm
strength, geomagnetic activity and solar wind: Implications for semiannual
variation and solar hemispheric asymmetry, Geophys. Res. Lett., 38, L06104,
https://doi.org/10.1029/2011GL046751, 2011.
a
NASA: CDAWeb Selector Error, CDAWeb, available at:
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval1.cgi (last access: 7 September 2020), 2020a.
NASA: Paths to Magnetic field, Plasma, Energetic particle data relevant to heliospheric studies and resident at Goddard's Space Physics Data Facility, available at:
https://omniweb.gsfc.nasa.gov/ (last access: 7 September 2020), 2020b.
Nowada, M., Shue, J. H., and Russell, C. T.: Effects of dipole tilt angle on
geomagnetic activity, Planet. Space Sci., 57, 1254–1259,
https://doi.org/10.1016/j.pss.2009.04.007, 2009.
a
Omura, Y., Hsieh, Y.-K., Foster, J. C., Erickson, P. J., Kletzing, C. A., and
Baker, D. N.: Cyclotron Acceleration of Relativistic Electrons Through Landau
Resonance With Obliquely Propagating Whistler-Mode Chorus Emissions, J.
Geophys. Res.-Space, 124, 2795–2810,
https://doi.org/10.1029/2018JA026374, 2019.
a
Scargle, J. D.: Studies in astronomical time series analysis. II. Statistical
aspects of spectral analysis of unevenly spaced data, Astrophys. J., 263,
835–853, 1982. a
Selesnick, R. S., Su, Y.-J., and Blake, J. B.: Control of the innermost
electron radiation belt by large-scale electric fields, J. Geophys. Res.-Space, 121, 8417–8427,
https://doi.org/10.1002/2016JA022973, 2016.
a
Summers, D., Ni, B., and Meredith, N. P.: Timescales for radiation belt
electron acceleration and loss due to resonant wave-particle interactions: 2.
Evaluation for VLF chorus, ELF hiss, and electromagnetic ion cyclotron waves, J. Geophys. Res.-Space, 112, A04207,
https://doi.org/10.1029/2006JA011993, 2007.
a
Tsurutani, B. T., Gonzalez, W. D., Tang, F., and Lee, Y. T.: Great magnetic
storms, Geophys. Res. Lett., 19, 73–76,
https://doi.org/10.1029/91GL02783, 1992.
a
Tsurutani, B. T., Gonzalez, W. D., Gonzalez, A. L. C., Tang, F., Arballo, J. K., and Okada, M.: Interplanetary origin of geomagnetic activity in the
declining phase of the solar cycle, J. Geophys. Res.-Space, 100,
21717–21733,
https://doi.org/10.1029/95JA01476, 1995.
a
Tsurutani, B. T., Gonzalez, W. D., Guarnieri, F., Kamide, Y., Zhou, X., and
Arballo, J. K.: Are high-intensity long-duration continuous AE activity
(HILDCAA) events substorm expansion events?, J. Atmos. Sol.-Terr. Phy., 66,
167–176,
https://doi.org/10.1016/j.jastp.2003.08.015, 2004.
a
Tsurutani, B. T., Gonzalez, W. D., Gonzalez, A. L. C., Guarnieri, F. L.,
Gopalswamy, N., Grande, M., Kamide, Y., Kasahara, Y., Lu, G., Mann, I.,
McPherron, R., Soraas, F., and Vasyliunas, V.: Corotating solar wind streams
and recurrent geomagnetic activity: A review, J. Geophys. Res.-Space, 111, A07S01,
https://doi.org/10.1029/2005JA011273, 2006.
a
Tsurutani, B. T., Lakhina, G. S., and Verkhoglyadova, O. P.: Energetic electron
(
>10 keV) microburst precipitation,
∼5–15 s X-ray pulsations, chorus,
and wave-particle interactions: A review, J. Geophys. Res.-Space, 118,
2296–2312,
https://doi.org/10.1002/jgra.50264, 2013.
a,
b
Tsurutani, B. T., Hajra, R., Tanimori, T., Takada, A., Remya, B., Mannucci, A. J., Lakhina, G. S., Kozyra, J. U., Shiokawa, K., Lee, L. C., Echer, E.,
Reddy, R. V., and Gonzalez, W. D.: Heliospheric plasma sheet (HPS)
impingement onto the magnetosphere as a cause of relativistic electron
dropouts (REDs) via coherent EMIC wave scattering with possible consequences
for climate change mechanisms, J. Geophys. Res.-Space, 121, 10130–10156,
https://doi.org/10.1002/2016JA022499, 2016.
a
Tsurutani, B. T., Lakhina, G. S., and Hajra, R.: The physics of space weather/solar-terrestrial physics (STP): what we know now and what the current and future challenges are, Nonlin. Processes Geophys., 27, 75–119,
https://doi.org/10.5194/npg-27-75-2020, 2020.
a
Van Allen, J. A., Ludwig, G. H., Ray, E. C., and McIlwain, C. E.: Observation
of High Intensity Radiation by Satellites 1958 Alpha and Gamma, Jet
Propulsion, 28, 588–592,
https://doi.org/10.2514/8.7396, 1958.
a
Wrenn, G. L.: Conclusive evidence for internal dielectric charging anomalies on
geosynchronous communications spacecraft, J. Spacecraft Rockets, 32, 514–520,
https://doi.org/10.2514/3.26645, 1995.
a
Xiao, F., Yang, C., He, Z., Su, Z., Zhou, Q., He, Y., Kletzing, C. A., Kurth, W. S., Hospodarsky, G. B., Spence, H. E., Reeves, G. D., Funsten, H. O.,
Blake, J. B., Baker, D. N., and Wygant, J. R.: Chorus acceleration of
radiation belt relativistic electrons during March 2013 geomagnetic storm, J.
Geophys. Res.-Space, 119, 3325–3332,
https://doi.org/10.1002/2014JA019822, 2014.
a
Zhang, Z., Chen, L., Liu, S., Xiong, Y., Li, X., Wang, Y., Chu, W., Zeren, Z.,
and Shen, X.: Chorus Acceleration of Relativistic Electrons in Extremely Low
L-Shell During Geomagnetic Storm of August 2018, Geophys. Res. Lett., 47,
e2019GL086226,
https://doi.org/10.1029/2019GL086226, 2020.
a
