Collaborative Research: GEM: Global Simulations of Non-Ideal Transport in the Magnetotail

等离子体从尾部重联地点被输送到内磁层，在那里它形成环电流。研究这种传输的最常见类型的模型是全球磁流体动力学（MHD）模型。由于磁流体动力学模型不能很好地描述内磁层的物理现象，这些模型经常与内磁层中等离子体输运模型相结合。这是一个旨在增强尾部MHD模型物理特性的项目，在那里它们的工作效果最好。 这项工作将增加抗磁（压力驱动）漂移，惯性漂移，有限拉莫尔半径的压力张量的影响，以及这些漂移的能量依赖性。改进后的模式将用于研究磁层对流、快速爆发体流和偶极锋、Kelvin-Helmholtz不稳定性和薄电流片结构，改进后的模拟程序与内磁层模式结合将有助于研究磁暴期间的输运。 因此，对空间天气研究具有重要的意义。 由于空间气象是一系列危害，这项工作可能具有重大的社会价值。

Plasma from the tail reconnection site is transported into the inner magnetosphere where it forms the ring current. The most common type of model for studying this transport is a global magnetohydrodynamic (MHD) model. These are frequently coupled with models of the plasma transport in the inner magnetosphere since MHD models do not describe the physics well in the inner magnetosphere. This is a project to enhance the physics of the MHD models in the tail where they work best. This effort will add diamagnetic (pressure driven) drifts, inertial drifts, finite Larmor radius effects on the pressure tensor, and the energy dependence of these drifts. The improved model will be used to study magnetospheric convection, fast bursty bulk flows and dipolarization fronts, the Kelvin-Helmholtz instability and the structure of thin current sheets.The improved simulation code when coupled with an inner magnetosphere model will be useful in studying transport during magnetic storms. Therefore it will valuable for space weather studies. Since space weather represents a series hazard this work may be of significant societal value.