| 项目编号: | 1404322
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| 项目名称: | Collaborative Research: GEM: Global Simulations of Non-Ideal Transport in the Magnetotail |
| 作者: | Aleksandr Ukhorskiy
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| 承担单位: | Johns Hopkins University
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| 批准年: | 2013
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| 开始日期: | 2014-06-01
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| 结束日期: | 2018-05-31
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| 资助金额: | USD124158
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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: | inner magnetosphere
; model
; transport
; plasma transport
; simulation code
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| 英文摘要: | Plasma from the tail reconnection site is transported into the inner magnetosphere where it forms the ring current. The most common type of model for studying this transport is a global magnetohydrodynamic (MHD) model. These are frequently coupled with models of the plasma transport in the inner magnetosphere since MHD models do not describe the physics well in the inner magnetosphere. This is a project to enhance the physics of the MHD models in the tail where they work best. This effort will add diamagnetic (pressure driven) drifts, inertial drifts, finite Larmor radius effects on the pressure tensor, and the energy dependence of these drifts. The improved model will be used to study magnetospheric convection, fast bursty bulk flows and dipolarization fronts, the Kelvin-Helmholtz instability and the structure of thin current sheets.
The improved simulation code when coupled with an inner magnetosphere model will be useful in studying transport during magnetic storms. Therefore it will valuable for space weather studies. Since space weather represents a series hazard this work may be of significant societal value. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/96673
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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: | |
Aleksandr Ukhorskiy. Collaborative Research: GEM: Global Simulations of Non-Ideal Transport in the Magnetotail. 2013-01-01.
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