Width of plasmaspheric plumes related to the level of geomagnetic storm intensity
<p>The plume is a plasma region in the magnetosphere that is detached from the main plasmasphere. It significantly contributes to the dynamic processes in both the inner and outer magnetosphere. In this paper, using Van Allen Probe A (VAP-A), the correlation between plume width and the level o...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2022-12-01
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| Series: | Annales Geophysicae |
| Online Access: | https://angeo.copernicus.org/articles/40/673/2022/angeo-40-673-2022.pdf |
| _version_ | 1811190697454206976 |
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| author | Z. Yang Z. Yang H. Li H. Li Z. Yuan Z. Ouyang Z. Ouyang X. Deng |
| author_facet | Z. Yang Z. Yang H. Li H. Li Z. Yuan Z. Ouyang Z. Ouyang X. Deng |
| author_sort | Z. Yang |
| collection | DOAJ |
| description | <p>The plume is a plasma region in the magnetosphere that is detached from the
main plasmasphere. It significantly contributes to the dynamic processes in
both the inner and outer magnetosphere. In this paper, using Van Allen Probe A (VAP-A), the correlation between plume width and the level of geomagnetic storm intensity is studied. First, through the statistical analysis of all potential plume events, we find that there is almost no correlation between plume width and the level of geomagnetic storm intensity. However, for the plumes in the recovery phase after improved sifting, it seems that there is a negative correlation between the plume width and the absolute value of minimum Dst during a storm. Utilizing test particle simulations, we study the dynamic evolution patterns of plumes during two geomagnetic storms. The simulated structures of the two plasmaspheric plumes are roughly consistent with the structures observed by the Van Allen Probe A. This result suggests that the plasmaspheric particles escape quickly during intense geomagnetic storms, causing the width of the plume to be relatively narrow during the recovery phase of intense geomagnetic storms. These results are helpful for understanding the dynamic evolution of the plasmasphere and plume during geomagnetic storms.</p> |
| first_indexed | 2024-04-11T14:54:36Z |
| format | Article |
| id | doaj.art-106e204ffd5246fcb1616c6472a9e962 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-04-11T14:54:36Z |
| publishDate | 2022-12-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-106e204ffd5246fcb1616c6472a9e9622022-12-22T04:17:18ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762022-12-014067368510.5194/angeo-40-673-2022Width of plasmaspheric plumes related to the level of geomagnetic storm intensityZ. Yang0Z. Yang1H. Li2H. Li3Z. Yuan4Z. Ouyang5Z. Ouyang6X. Deng7Department of Physics, School of Physics and Materials, Nanchang University, Nanchang 330031, ChinaInstitute of Space Science and Technology, Nanchang University, Nanchang 330031, ChinaDepartment of Physics, School of Physics and Materials, Nanchang University, Nanchang 330031, ChinaInstitute of Space Science and Technology, Nanchang University, Nanchang 330031, ChinaSchool of Electronic Information, Wuhan University, Wuhan, ChinaDepartment of Physics, School of Physics and Materials, Nanchang University, Nanchang 330031, ChinaInstitute of Space Science and Technology, Nanchang University, Nanchang 330031, ChinaDepartment of Physics, School of Physics and Materials, Nanchang University, Nanchang 330031, China<p>The plume is a plasma region in the magnetosphere that is detached from the main plasmasphere. It significantly contributes to the dynamic processes in both the inner and outer magnetosphere. In this paper, using Van Allen Probe A (VAP-A), the correlation between plume width and the level of geomagnetic storm intensity is studied. First, through the statistical analysis of all potential plume events, we find that there is almost no correlation between plume width and the level of geomagnetic storm intensity. However, for the plumes in the recovery phase after improved sifting, it seems that there is a negative correlation between the plume width and the absolute value of minimum Dst during a storm. Utilizing test particle simulations, we study the dynamic evolution patterns of plumes during two geomagnetic storms. The simulated structures of the two plasmaspheric plumes are roughly consistent with the structures observed by the Van Allen Probe A. This result suggests that the plasmaspheric particles escape quickly during intense geomagnetic storms, causing the width of the plume to be relatively narrow during the recovery phase of intense geomagnetic storms. These results are helpful for understanding the dynamic evolution of the plasmasphere and plume during geomagnetic storms.</p>https://angeo.copernicus.org/articles/40/673/2022/angeo-40-673-2022.pdf |
| spellingShingle | Z. Yang Z. Yang H. Li H. Li Z. Yuan Z. Ouyang Z. Ouyang X. Deng Width of plasmaspheric plumes related to the level of geomagnetic storm intensity Annales Geophysicae |
| title | Width of plasmaspheric plumes related to the level of geomagnetic storm intensity |
| title_full | Width of plasmaspheric plumes related to the level of geomagnetic storm intensity |
| title_fullStr | Width of plasmaspheric plumes related to the level of geomagnetic storm intensity |
| title_full_unstemmed | Width of plasmaspheric plumes related to the level of geomagnetic storm intensity |
| title_short | Width of plasmaspheric plumes related to the level of geomagnetic storm intensity |
| title_sort | width of plasmaspheric plumes related to the level of geomagnetic storm intensity |
| url | https://angeo.copernicus.org/articles/40/673/2022/angeo-40-673-2022.pdf |
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