Geospace Environment Modeling (GEM): Simulation Studies of Substorm Triggering Processes

地球空间环境建模（GEM）：亚暴触发过程的模拟研究

• 批准号: 0000251
• 负责人: Joel Fedder
• 金额: --
• 依托单位: George Mason University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0000251&HistoricalAwards=false
• 关键词: Geospace; Environment; Modeling; GEM; Simulation

The investigators use magnetohydrodynamic (MHD) modeling to study the triggering of magnetic substorms and the response of the magnetosphere to changes in the interplanetary magnetic field (IMF). Specific areas of study include: the propagation of solar wind induced transients in the magnetosphere and their ionospheric signatures; magnetotail and plasma sheet configuration during substorm growth phase; the effects of solar wind transients on plasma sheet thinning; and the dynamics of the near Earth plasmasheet and magnetotail during changes in the IMF. The study will initially involve only model simulations. Later, the investigators will use solar wind inputs from actual substorm events. The studies are aimed at improving our understanding of geomagnetic substorms leading to an improved predictive capability.

研究人员使用磁流体动力学（MHD）模型来研究磁亚暴的触发以及磁层对行星际磁场（IMF）变化的响应。具体研究领域包括：太阳风引起的磁层瞬变的传播及其电离层特征;亚暴增长阶段磁尾和等离子体片的形态;太阳风瞬变对等离子体片变薄的影响;以及国际货币基金组织变化期间近地等离子体层和磁尾的动态。这项研究最初将只涉及模型模拟。稍后，研究人员将使用来自实际亚暴事件的太阳风输入。这些研究旨在提高我们对地磁亚暴的认识，从而提高预测能力。