| 项目编号: | 1248242
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| 项目名称: | Simulation Studies of Plasmaspheric Plume Density Structure/Ion Composition and Plume Plasma Transport to Dayside Magnetopause and Polar Cap |
| 作者: | Jiannan Tu
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| 承担单位: | University of Massachusetts Lowell
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| 批准年: | 2013
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| 开始日期: | 2014-02-01
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| 结束日期: | 2017-01-31
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| 资助金额: | USD310419
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| 资助来源: | US-NSF
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| 项目类别: | Continuing grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | study
; plume magnetic field line
; density distribution
; model
; plasma
; plasmaspheric plume
; polar cap
; dayside magnetospause
; magnetospheric plasma circulation
; dense cold ionospheric plasma
; plasmaspheric plasma mass
; other study
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| 英文摘要: | A plasmaspheric plume is a region of dense cold ionospheric plasma extending outward into the magnetosphere from the nominal location of the plasmapause. It has a limited width in azimuth. This study will use and improve the dynamic-fluid-kinetic-plasmasphere-ionosphere (DyFKPI) model. This model combines self-consistently a fluid based model of the ionosphere with a particle based model of the plasmasphere. It will be used to determine the density distributions of electrons and ions (H+, He+, and O+) along plume magnetic field lines and provide formulas that can be used to determine the density along the flux tube. The second part of this study will quantify the plasmaspheric plasma mass delivered to the dayside magnetospause as a function of magnetospheric activity. This research will investigate how plasmaspheric plumes deliver plasma to the polar cap and contribute to magnetospheric plasma circulation. IMAGE RPI data will be used in this study and compared with simulation derived density distributions.
While the research is rather narrowly focused on the structure and impact of the plasma plumes the resulting formulas will be valuable in other studies of magnetospheric physics. The grant will support a graduate student. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/97406
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Jiannan Tu. Simulation Studies of Plasmaspheric Plume Density Structure/Ion Composition and Plume Plasma Transport to Dayside Magnetopause and Polar Cap. 2013-01-01.
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