Auroral Mapping and Electrodynamics

空间科学长期以来一直在寻找原因的答案， 不同类型的极光结构和它们在 在全球磁场活动的不同时期。 的 该项目的研究科学家过去曾试图 追踪平静时间附近电离层电流的影响 利用平静时间将极光结构送入磁层 磁场模型 这个新项目将使用更多的 扰动模型的磁层，以研究更多的动态 与极光亚暴有关的结构，如极光 环路、极向浪涌和欧米茄波段。此外，新 该模型将允许研究 交叉尾电流转向电离层。 这些研究 电子流和离子流之间的耦合 磁尾可能有助于解开一些物理过程 发生在极光亚暴开始的时候

Space science has long sought the answer to the cause for different types of auroral structures and their occurrence at different times within the global magnetic activity. The research scientists in this program have in the past attempted to trace the effects of currents from the ionosphere near quiet time auroral structures into the magnetosphere using quiet time magnetic field models. This new project will use a more disturbed model of the magnetosphere to investigate more dynamic structures associated with the auroral substorm, such as auroral loops, poleward surges and omega bands. In addition, this new model will allow study of mapping effects produced by the diversion of cross-tail current to the ionosphere. These studies of the coupling between electron and ion currents in the inner magnetotail may help to unravel some of the physical processes that take place during the auroral substorm onset.