A multi-satellite survey scheme for addressing open questions on the Earth’s outer radiation belt dynamics

Yang, Xiaochao; Li, Xinlin; Dai, Lei; Wu, Ji; Kalegaev, Vladimir; Li, Wen; Miyoshi, Yoshizumi; Liu, Wenlong; Xiang, Zheng; Ni, Binbin; Liu, Si; Baker, Daniel N.; Wang, Chi; Deng, Li; Li, Yulun; Praks, Jaan; Anger, Marius; Wang, Jingdong; Zhou, Bin; Zhang, Shenyi; dos Santos, Walter Abrahao; Ma, Yingqi

doi:10.1016/j.asr.2024.08.008

Advances in Space Research

2024

DOI: 10.1016/j.asr.2024.08.008

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A multi-satellite survey scheme for addressing open questions on the Earth’s outer radiation belt dynamics

Xiaochao Yang,

Xinlin Li,

Lei Dai

et al.

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The Evolution of Earth's Outer Radiation Belt Over Geomagnetic Storm Phase in Van Allen Probe Era

Wang,

Dai,

Yong

et al. 2024

JGR Space Physics

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Earth's outer radiation belts are highly dynamic during geomagnetic storms. Using electron flux data from 226 keV to 2.6 MeV measured by the Van Allen Probes, we statistically analyzed the peak flux position and inner boundary position of the outer radiation belt across different storm phases: pre‐storm quiet time, main phase, early recovery phase, and later recovery phase. This analysis covered 196 geomagnetic storm events from October 2012 to September 2019. Our results indicate that: (a) During the pre‐storm, decreases with increasing energy. From the pre‐storm to the early recovery phase, shifts inward for energies below 1 MeV and outward for energies above 1 MeV. For all energies, converges to approximately L = 4.3–4.6 in the early recovery phase. (b) Below approximately 1 MeV, generally move inward from the main phase to the early recovery phase. Above 1 MeV, remains nearly unchanged across different storm phases. (c) The half‐width (−) of the outer belt decreases during the main phase for energies below 1 MeV and increases during the recovery phase for energies above 1.5 MeV. (d) In the early recovery phase, and at 593–742 keV show a moderate correlation with storm intensity (CC 0.7–0.8), while and at energies greater than 1.1 MeV exhibit low correlations (CC0.4) during each phase. These results confirm the complex, energy‐dependent morphology of the outer radiation belt throughout geomagnetic storm phases.

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The Evolution of Earth's Outer Radiation Belt Over Geomagnetic Storm Phase in Van Allen Probe Era

Wang,

Dai,

Yong

et al. 2024

JGR Space Physics

View full text Add to dashboard Cite

show abstract

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A multi-satellite survey scheme for addressing open questions on the Earth’s outer radiation belt dynamics

Cited by 1 publication

References 162 publications

The Evolution of Earth's Outer Radiation Belt Over Geomagnetic Storm Phase in Van Allen Probe Era

The Evolution of Earth's Outer Radiation Belt Over Geomagnetic Storm Phase in Van Allen Probe Era

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