Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 44, issue 2
Articles | Volume 44, issue 2
https://doi.org/10.5194/angeo-44-881-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-44-881-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 44, issue 2
Regular paper
 | 
01 Sep 2026
Regular paper |  | 01 Sep 2026

Magnetotail response to corotating interaction region driven geomagnetic storms: Cluster observations

Adriane Marques de Souza Franco, Rashmi Rawat, Mauricio José Alves Bolzan, and Ezequiel Echer

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Short summary
This study investigates 40 geomagnetic storms driven by corotating interaction regions and their impact on Earth's magnetotail. We find that short, 4 h energy pulses dominate the magnetotail during cyclic substorms. Furthermore, High-Intensity, Long-Duration, Continuous Auroral Activity (HILDCAA) events in the recovery phase facilitate energy distribution across 2–12 h periodicities in the auroral region. Spectral indices indicate strong turbulence in both regions.
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