An Operational 3-D Magnetospheric B-Field Model
实用的 3-D 磁层 B 场模型
基本信息
- 批准号:9114269
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing grant
- 财政年份:1992
- 资助国家:美国
- 起止时间:1992-03-15 至 1996-02-29
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This is a renewal proposal for a three-year NSF grant. We propose to develop an operational three-dimensional magnetospheric B-field model for Earth's magnetosphere which responds to changes in the solar wind and interplanetary field conditions, and to changes in the plasma conditions within the magnetotail and ring-current regions. The new model approximately satisfies the MHD equilibrium condition; it is time-dependent on the quasi-static time scale. We aim at developing a user-friendly FORTAN code which can be used by the scientific community upon request. The proposed work is important, because most available three- dimensional B-field models for Earth's magnetosphere are rather limited: they represent only "average" magnetospheric conditions (e.g., ordered with respect to the Kp index). B-field models much more flexible are needed for simulating critical magnetospheric situations, such as highly stretched tail field lines in the late state of the substorm expansion phase, or "collapsed" magnetotail field lines following a neutral sheet reconnection event. Also, field-aligned Birkeland currents and boundary conditions of the "open" magnetosphere need to be well represented. We propose to achieve such a goal by developing a second- generation code of the so-called Hilmer-Voigt magnetospheric magnetic field model ?Hilmer, 1989!; that model has been designed, coded, and tested under the previous NSF grant (with the additional help from other funding as well). A preliminary version of the Hilmer-Voigt model is presently being used in connection with the "Rice Convection Model" and the "Magnetospheric Specification Model". The experience gained through those "applications" has led us to propose some major physical improvements which include the following: (1) Replace the existing magnetopause by a flexible shape which responds to the solar wind ram thermal pressures. (2) Include magnetopause boundary conditions for an "open" magnetosphere. (3) Provide the computational tools to include field-aligned Birkeland currents. (4) Use Stern's stretch transformations to make the magnetotail and ring currents approximately consistent with the requirement of quasi-static MHD force balance. The proposed work is not a narrow or limited task| We claim that a user-friendly flexible B-field model that responds to a variety of physical input parameters is a significant achievement for magnetospheric physics, in that it provides us with a versatile research tool for both data analysis and theoretical studies.
这是一个为期三年的NSF赠款的更新建议。 我们 建议开发一个可操作的三维 地球磁层的磁层B场模型, 对太阳风和行星际磁场的变化做出反应 条件,并在等离子体条件的变化, 磁尾和环电流区。 新模式 近似满足MHD平衡条件;它是 时间依赖于准静态时间尺度。 我们的目标是 开发一个用户友好的FORTAN代码,可用于 科学界应要求。 建议的工作是重要的,因为大多数可用的三个- 地球磁层的三维B场模型 有限:它们只代表“平均”磁层条件 (e.g.,相对于Kp指数排序)。 B场模型 需要更灵活的模拟关键 磁层情况,如高度拉伸的尾场 在亚暴扩张阶段后期的谱线,或 中性片后的“坍缩”磁尾磁力线 重新连接事件。 此外,场向Birkeland电流和 “开放”磁层的边界条件需要很好 代表。 我们建议通过发展第二个- 所谓的Hilmer-Voigt磁层生成代码 磁场模型?希尔默,1989年!这种模式已经 设计,编码,并根据以前的NSF赠款测试(与 其他资金的支持)。 初步 Hilmer-Voigt模型的一个版本目前正在使用, 与“水稻对流模型”和 磁层规范模型。 取得的经验 通过这些“应用”,我们提出了一些重大的建议, 物质改善,包括: (1)用一种灵活的形状取代现有的磁层顶, 对太阳风冲击热压力的反应。 (2)包括磁层顶边界条件的“开放” 磁层 (3)提供计算工具,包括场对齐 伯克兰电流 (4)使用斯特恩的拉伸变换,使磁尾 环电流基本符合要求 准静态MHD力平衡。 拟议的工作不是一项狭隘或有限的任务|我们主张 一个用户友好的灵活的B场模型, 各种物理输入参数是一项重大成就 为磁层物理学,因为它为我们提供了 数据分析和理论研究的通用工具 问题研究
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Thomas Hill其他文献
Role of IL-22 in tissue regeneration in autoimmunity (P5164)
IL-22 在自身免疫组织再生中的作用 (P5164)
- DOI:
10.4049/jimmunol.190.supp.195.11 - 发表时间:
2013 - 期刊:
- 影响因子:4.4
- 作者:
Bhagirath Singh;Thomas Hill;O. Krougly;Alexander Qian;S. Bellemore;E. Lee‐Chan;E. Nikoopour;D. Hill - 通讯作者:
D. Hill
Patient-Directed Health Care
以患者为导向的医疗保健
- DOI:
- 发表时间:
2015 - 期刊:
- 影响因子:0
- 作者:
Linda A. Winters;Pat S. Bolding;J. Hilbe;Mitchell Goldstein;Thomas Hill;R. Nisbet;Nephi A. Walton;G. Miner - 通讯作者:
G. Miner
“Meaningful Use” – The New Buzzword in Medicine
“有意义的使用”——医学新流行语
- DOI:
10.1016/b978-0-12-411643-6.00009-0 - 发表时间:
2015 - 期刊:
- 影响因子:64.5
- 作者:
Linda A. Winters;Pat S. Bolding;J. Hilbe;Mitchell Goldstein;Thomas Hill;R. Nisbet;Nephi A. Walton;G. Miner - 通讯作者:
G. Miner
Institutional Variability in Patient Radiation Doses ≥5 Gy During Percutaneous Coronary Intervention.
经皮冠状动脉介入治疗期间患者辐射剂量≥5 Gy 的机构变异性。
- DOI:
10.1016/j.jcin.2019.11.032 - 发表时间:
2020 - 期刊:
- 影响因子:0
- 作者:
R. Madder;S. Dixon;Milan Seth;Daniel Lee;Thomas J. Earl;Thomas Hill;I. Shah;H. Gurm - 通讯作者:
H. Gurm
Prediction in Medicine – The Data Mining Algorithms of Predictive Analytics
医学预测——预测分析的数据挖掘算法
- DOI:
- 发表时间:
2015 - 期刊:
- 影响因子:0
- 作者:
Linda A. Winters;Pat S. Bolding;J. Hilbe;Mitchell Goldstein;Thomas Hill;R. Nisbet;Nephi A. Walton;G. Miner - 通讯作者:
G. Miner
Thomas Hill的其他文献
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{{ truncateString('Thomas Hill', 18)}}的其他基金
Collaborative Research: Laboratory and Ground-Based Studies Addressing Unresolved Aspects of Atmospheric Ice Nucleation
合作研究:实验室和地面研究解决大气冰核形成的未解决问题
- 批准号:
0841542 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Standard Grant
GEM: A Modular Model of the Storm-Time Magnetosphere
GEM:风暴时磁层的模块化模型
- 批准号:
0302479 - 财政年份:2003
- 资助金额:
-- - 项目类别:
Continuing Grant
GEM: Extensions of the Rice Field Model
GEM:稻田模型的扩展
- 批准号:
9802717 - 财政年份:1998
- 资助金额:
-- - 项目类别:
Continuing Grant
GGCM Applications of the Magnetospheric Specification Model and the Rice Field Model
磁层规范模型和稻田模型的GGCM应用
- 批准号:
9802744 - 财政年份:1998
- 资助金额:
-- - 项目类别:
Continuing Grant
GEM: Concept Study for a Modular-Progressive GGCM
GEM:模块化渐进式 GGCM 概念研究
- 批准号:
9704563 - 财政年份:1997
- 资助金额:
-- - 项目类别:
Standard Grant
Space Weather: Modeling of Geomagnetic Storm Dynamics
空间天气:地磁风暴动力学建模
- 批准号:
9613824 - 财政年份:1996
- 资助金额:
-- - 项目类别:
Continuing Grant
GEM: Applications of a Modular Open Magnetosphere Model
GEM:模块化开放磁层模型的应用
- 批准号:
9501898 - 财政年份:1995
- 资助金额:
-- - 项目类别:
Continuing Grant
Interaction of Comet Shoemaker-Levy-9 with the Jovian Magnetosphere
Shoemaker-Levy-9 彗星与木星磁层的相互作用
- 批准号:
9322360 - 财政年份:1994
- 资助金额:
-- - 项目类别:
Standard Grant
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Separating multi-decadal internal geomagnetic secular variation and magnetospheric field variations
分离数十年内部地磁长期变化和磁层场变化
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273423638 - 财政年份:2015
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Priority Programmes
Elucidation of magnetospheric convection mechanisms during northward interplanetary magnetic field periods
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1203246 - 财政年份:2012
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1137755 - 财政年份:2012
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1003876 - 财政年份:2010
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Collaborative Research: GEM--Asymmetric Entry and Transport of Magnetospheric Plasma During Periods of Northward Interplanetary Magnetic Field
合作研究:GEM--北行行星际磁场期间磁层等离子体的不对称进入和输运
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1003874 - 财政年份:2010
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0809161 - 财政年份:2007
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Dynamical Data-based Modeling of the Magnetospheric Magnetic Field
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0539038 - 财政年份:2006
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228112-2002 - 财政年份:2004
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