The Physical Response of the Inner Magnetosphere to Geoeffective Solar Wind Drivers: Electrodynamics Coupling Effects, Disturbance Magnetic Field, and the Dst Index

内磁层对地球有效太阳风驱动器的物理响应：电动力学耦合效应、干扰磁场和 Dst 指数

• 批准号: 0090165
• 负责人: Janet Kozyra
• 金额: $ 35.78万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-15 至 2004-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0090165&HistoricalAwards=false
• 关键词: Physical; Response; Inner; Magnetosphere; Geoeffective

The investigators will study the impact of dynamic changes in the geosynchronous plasma sheet populations by modeling a range of magnetic storm sizes and steady magnetospheric convection events. Understanding the ways in which energy moves into and through the inner magnetosphere or is dissipated with the magnetosphere-ionosphere system in response to solar wind inputs provides the key to predicting the resulting effects on Earth's atmosphere. The study will address the role of density and temperature changes in the plasma sheet population, the role of penetration electric fields and long duration magnetic storms, the relation between convection events and small storms, and the contribution of the ring current to the storm energy budget and decay time scales. A major goal of this study is the quantification of how the electrodynamics of the inner magnetosphere responds to the solar wind drivers. Furthermore, the connection with ground-based magnetometer measurements, ionospheric current systems, and the global magnetosphere-ionosphere energy budget will be investigated.

研究人员将通过模拟一系列磁暴大小和稳定磁层对流事件来研究地球同步等离子体层数量动态变化的影响。了解能量进入和穿过内磁层的方式，或随太阳风输入的磁层-电离层系统消散的方式，为预测对地球大气的最终影响提供了关键。该研究将探讨密度和温度变化在等离子体片人口中的作用，穿透电场和长时间磁暴的作用，对流事件和小风暴之间的关系，以及环电流对风暴能量平衡和衰减时间尺度的贡献。本研究的一个主要目标是量化内磁层的电动力学如何响应太阳风驱动。此外，还将研究与地面磁强计测量、电离层电流系统和全球磁层-电离层能量收支的联系。