Solar-Wind Magnetosphere Interactions, Theory and Data Analysis

这笔赠款将继续协调计划， 现有卫星数据的理论建模和分析 旨在更好地理解 太阳风与地球磁层-电离层 系统 工作的主要内容包括：（A）定量 开放磁层场的时间相关模拟 配置和由此产生的太阳风映射 电场的极冠;（B）极地的实证研究， 帽对流模式和极冠下的电位降 时变太阳风/IMF条件;（C）实证研究 在极光之上的热电子和超热电子群 加速区及其对磁尾等离子体的映射 床单。 建模工作联合收割机结合了灵活性和物理 分析公式的清晰度与计算能力 现代超级计算机。 数据分析工作联合收割机 多个航天器数据集，以解决 从理论上讲 建模与数据分析的紧密配合 活动对理解复杂的 日地系统

This grant is to continue a coordinated program of theoretical modeling and analysis of existing satellite data directed toward an improved understanding of the interaction of the solar wind with the terrestrial magnetosphere-ionosphere system. Key elements of the work include: (A) quantitative time-dependent modeling of the open magnetospheric field configuration and the resultant mapping of the solar-wind electric field to the polar caps; (B) empirical study of polar- cap convection patterns and of the polar-cap potential drop under time-variable solar-wind/IMF conditions; and (C) empirical study of thermal and suprathermal electron populations above auroral acceleration regions and their mapping to the magnetotail plasma sheet. The modeling efforts combine the flexibility and physical clarity of analytical formulations with the computational power of modern supercomputers. The data analysis efforts combine multiple spacecraft datasets to address specific questions posed by theory. The close coordination of modeling and data-analysis activities has a synergistic effect on understanding the complex solar-terrestrial system.