| DOI: | 10.1029/2012GL054300
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| 论文题名: | Modeling the plasmasphere with SAMI3 |
| 作者: | Huba J.; Krall J.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9391
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| EISSN: | 1944-9122
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| 出版年: | 2013
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| 卷: | 40, 期:1 | | 起始页码: | 6
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| 结束页码: | 10
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| 语种: | 英语
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| Scopus关键词: | 3D simulations
; Convection patterns
; Enhanced convection
; Geomagnetic conditions
; Magnetic local time
; Plume-like structure
; Radiation belt dynamics
; Space weather phenomena
; Carrier concentration
; Computer simulation
; Electron density measurement
; Geomagnetism
; Storms
; Three dimensional computer graphics
; Magnetosphere
; atmospheric convection
; atmospheric electricity
; atmospheric plume
; electron
; geomagnetic storm
; plasma
; three-dimensional modeling
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| 英文摘要: | The study of the plasmasphere is extremely important to understanding space weather phenomena; for example, it plays a critical role in the regulation of radiation belt dynamics. In this paper, the first 3D simulation of the plasmasphere based on the first-principles physics model SAMI3 is presented. We include the co-rotation potential, the neutral wind dynamo potential, and a time-dependent Volland-Stern-Maynard-Chen potential to model the response of the convection potential to an idealizedmagnetic storm.We find that prior to the stormthe plasmasphere is largely toroidal and symmetric in magnetic local time with He+/H+~5-10%. After the storm, the plasmasphere substantially contracts because plasma is convected away from the outer plasmasphere by the enhanced convection velocity. Moreover, a plume-like structure forms in the midafternoon sector because of the modified convection pattern associated with the storm. Additionally good agreement is found between the simulation results and data for the L-shell dependence of the equatorial electron density as well as the electron density along the field line at a given L-shell under quiet geomagnetic conditions. © 2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874856145&doi=10.1029%2f2012GL054300&partnerID=40&md5=e881182bc79f0231986df4a1d29dc3c8
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6655
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Plasma Physics Division, Naval Research Laboratory, Washington, DC, United States
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| Recommended Citation: | |
Huba J.,Krall J.. Modeling the plasmasphere with SAMI3[J]. Geophysical Research Letters,2013-01-01,40(1).
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