ring current

Jang, E., Yue, C., Zong, Q., Fu, S., & Fu, H. B. (2021). The effect of non-storm time substorms on the ring current dynamics. Earth And Planetary Physics, 5, eepp2021032. http://doi.org/https://doi.org/10.26464/epp2021032 (Original work published June 2021)
Claudepierre, S., Liu, X., Chen, L., & Takahashi, K. (2021). Observational evidence of the excitation of magnetosonic waves by an He ion ring distribution. Journal Of Geophysical Research: Space Physics, n/a, e2021JA029532. http://doi.org/https://doi.org/10.1029/2021JA029532 (Original work published July 2021)
Kim, H., Schiller, Q., Engebretson, M., Noh, S., Kuzichev, I., Lanzerotti, L., et al. (2021). Observations of Particle Loss due to Injection-Associated EMIC Waves. Journal Of Geophysical Research: Space Physics, n/a, e2020JA028503. http://doi.org/https://doi.org/10.1029/2020JA028503 (Original work published January 2021)
Sandhu, J., Rae, I., & Walach, M. -T. (2021). Challenging the Use of Ring Current Indices During Geomagnetic Storms. Journal Of Geophysical Research: Space Physics, n/a, e2020JA028423. http://doi.org/https://doi.org/10.1029/2020JA028423 (Original work published January 2021)
Kistler, L. (2020). Observations and measurement techniques. In Ring Current Investigations The Quest for Space Weather Prediction. Amsterdam: Elsevier. http://doi.org/10.1016/B978-0-12-815571-4.00010-X
K.Jordanova, V. (2020). Ring Current Decay. In Ring Current Investigations The Quest for Space Weather Prediction. Amsterdam: Elsevier. http://doi.org/10.1016/B978-0-12-815571-4.00006-8
Li, X. -Y., Liu, Z. -Y., Zong, Q. -G., Zhou, X. -Z., Hao, Y. -X., Rankin, R., & Zhang, X. -X. (2021). Pitch Angle Phase Shift in Ring Current Ions Interacting with ULF Waves: Van Allen Probes Observations. Journal Of Geophysical Research: Space Physics, n/a, e2020JA029025. http://doi.org/https://doi.org/10.1029/2020JA029025 (Original work published March 2021)
Inaba, Y., Shiokawa, K., Oyama, S. -I., Otsuka, Y., Connors, M., Schofield, I., et al. (2021). Multi-event Analysis of Plasma and Field Variations in Source of Stable Auroral Red (SAR) Arcs in Inner Magnetosphere during Non-storm-time Substorms. Journal Of Geophysical Research: Space Physics, n/a, e2020JA029081. http://doi.org/https://doi.org/10.1029/2020JA029081 (Original work published March 2021)
Zhou, X. -Z., Ren, J., Yang, F., Yue, C., Zong, Q. -G., Fu, S. -Y., & Wang, Y. (2020). On the Formation of Wedge-Like Ion Spectral Structures in the Nightside Inner Magnetosphere. Journal Of Geophysical Research: Space Physics, 125, e2020JA028420. http://doi.org/https://doi.org/10.1029/2020JA028420 (Original work published November 2020)
Wang, Z., Su, Z., Liu, N., Dai, G., Zheng, H., Wang, Y., & Wang, S. (2020). Suprathermal Electron Evolution Under the Competition Between Plasmaspheric Plume Hiss Wave Heating and Collisional Cooling. Geophysical Research Letters, 47, e2020GL089649. http://doi.org/https://doi.org/10.1029/2020GL089649 (Original work published September 2020)