A Study of Solar Wind-Magnetosphere-Ionosphere Coupling Processes

这笔赠款用于研究太阳风-磁层-电离层相互作用的基本物理过程。这是日地物理学中的一个重要领域。这项工作将分为两大类：(1)磁层亚暴，(2)准平行无碰撞激波。第一项研究将尝试将M-I耦合模型与X线模型合并。这种合并的一个重要结果将是对场向电流进行定量建模，对开放磁层顶上的发电机区域进行建模，并研究阿尔芬波和双层之间的关系。在第二个领域中，提出了三个具体的问题进行深入的理论研究。准平行激波对太阳风-磁层耦合具有重要意义。准平行激波结构对初始条件的依赖性以及Alfven激波和离子分布函数也将被研究。

This grant is for studying the physical processes fundamental to solar wind-magnetosphere-ionosphere interactions. This is an important area in solar-terrestrial physics. The work will be divided into two major categories: (1) Magnetospheric Substorms, (2) Quasi-Parallel Collisionless Shocks. The first study will attempt to merge the M-I coupling model with the X-line model. An important outcome of this merging will be to quantitatively model field-aligned currents, to model the dynamo region on an open magnetopause, and to investigate the relationship between Alfven waves and double layers. Three specific problems are singled out for in-depth theoretical study in the second area. Quasi-parallel shocks are of fundamental importance to solar wind-magnetosphere coupling. The dependence of quasi- parallel shock structures on initial conditions will be investigated as well as Alfven shocks and ion distribution functions.