Contribution of EMIC and Chorus Waves to the Formation of the Three‐Belt of Ultra‐Relativistic Electrons

Abstract The Earth's radiation belts are usually composed of an inner and an outer zone. Previous studies have reported a third belt of ultra‐relativistic electrons, but the mechanism requires to be further clarified. Here we report a very interesting feature of MeV electrons during two storms in October 2018. During the October 7 storm the electrons in the region were quickly scattered by EMIC waves, leading to a storage ring left between . Over the following days, due to the chorus‐driven acceleration, electron fluxes significantly increased in the region , consequently allowing for a three‐belt structure. During the October 13 storm the electrons in the region were swept away by EMIC waves, leaving a narrow outer radiation belt confined within the region for several days. Numerical calculations demonstrate that the EMIC‐driven loss and chorus‐induced acceleration can account for the formation and evolution of the third‐belt morphology.

Authors

Institutions

Publication Details

Journal
Journal of Geophysical Research Space Physics
Published
2024-12-01
DOI
https://doi.org/10.1029/2024ja033380
Primary Topic
Ionosphere and magnetosphere dynamics
Type
article
Field-Weighted Citation Impact
0.00

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Contribution of EMIC and Chorus Waves to the Formation of the Three‐Belt of Ultra‐Relativistic Electrons

Si Liu, Yihua He, Yuyue Jin, Hongming Yang et al.
Journal of Geophysical Research Space Physics
Ionosphere and magnetosphere dynamics
article

Contribution of EMIC and Chorus Waves to the Formation of the Three‐Belt of Ultra‐Relativistic Electrons

Si Liu, Yihua He, Yuyue Jin, Hongming Yang, Jia Yue, Zhonglei Gao, Fuliang Xiao, Sai Zhang, Zhaoguo He, Qinghua Zhou, Chang Yang, Zhao Hui, Archie James Johnston
article en

Abstract

Abstract The Earth's radiation belts are usually composed of an inner and an outer zone. Previous studies have reported a third belt of ultra‐relativistic electrons, but the mechanism requires to be further clarified. Here we report a very interesting feature of MeV electrons during two storms in October 2018. During the October 7 storm the electrons in the region were quickly scattered by EMIC waves, leading to a storage ring left between . Over the following days, due to the chorus‐driven acceleration, electron fluxes significantly increased in the region , consequently allowing for a three‐belt structure. During the October 13 storm the electrons in the region were swept away by EMIC waves, leaving a narrow outer radiation belt confined within the region for several days. Numerical calculations demonstrate that the EMIC‐driven loss and chorus‐induced acceleration can account for the formation and evolution of the third‐belt morphology.

Journal of Geophysical Research Space PhysicsVol. 129(12)
Macau University of Science and Technology (MO), Changsha University of Science and Technology (CN)
National Natural Science Foundation of China, Basic and Applied Basic Research Foundation of Guangdong Province
Openalex Percentile: Top 83%
Ionosphere and magnetosphere dynamics
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.