Studies in Geospace Dynamics

地球空间动力学研究

• 批准号: 9115557
• 负责人: Margaret Kivelson
• 金额: $ 23万
• 依托单位: University of California-Los Angeles
• 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: 1992-06-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115557&HistoricalAwards=false
• 关键词: Studies; Geospace; Dynamics

The objective of the proposed research is to understand the dynamics of the magnetosphere. Magnetospheric physics is at a critical juncture; research to be carried out in the next few years should lay bared the dominant mechanisms for coupling the ionized upper atmosphere to the solar wind on time scale as short as a few minutes. The science involved concerns more than the geophysical questions to be answered; the behavior of a cosmical plasma system is being investigated. Other less accessible examples of such systems are pulsars, radio galaxies and the solar atmosphere. The Investigators have a long term program of investigation of the magnetohydrodynamic processes that couple energy, momentum, and mass from the solar wind into the magnetosphere, ionosphere, and upper atmosphere. Towards this objective, both students and P.I.s will undertake a mix of theory, data analysis, and interpretation of computer simulations. In addition to contributing to understanding the fundamental processes that govern the magnetosphere, the work will be useful in such applications as monitoring and predicting naturally occuring hazards to earth orbiting spacecraft.

拟议研究的目的是了解磁层的动力学。磁层物理学正处于紧要关头；今后几年将开展的研究应揭示电离高层大气与太阳风在短至几分钟的时间尺度上耦合的主要机制。所涉及的科学不仅仅是需要回答的地球物理问题；宇宙等离子体系统的行为正在被研究中。脉冲星、射电星系和太阳大气也是这类系统中较难获得的例子。研究人员有一个长期的磁流体动力学过程研究计划，该过程将来自太阳风的能量、动量和质量耦合到磁层、电离层和高层大气中。为了实现这一目标，学生和私家侦探都将学习理论、数据分析和计算机模拟的解释。除了有助于了解支配磁层的基本过程外，这项工作还将有助于监测和预测对地球轨道航天器造成的自然危害等应用。