Determination of the Global Electrodynamics of the Aurora during Northward Interplanetary Magnetic Field Utilizing Numerical Modeling and Multiple-Satellite Data

这一提议旨在研究高纬度电离层和磁层之间的电动力耦合。特别是，它将研究行星际磁场(IMF)向北期间的耦合。电离层对流的动力学和场向电流(FAC)的变化将随着IMF按分量变化而进行研究。极地卫星的图像将与极地粒子测量以及DMSP卫星的粒子和磁场测量结合在一起。这些数据集将被用来确定场向电流和电离层电导率。关于电流和电离层对流的信息可以用来确定能量从磁层耦合到电离层的方式。

This proposal is designed to study the electrodynamic coupling between the ionosphere and the magnetosphere at high latitudes. In particular, it will examine the coupling during periods when the interplanetary magnetic field (IMF) is northward. The dynamics of the ionospheric convection and the variation in the field-aligned electric currents (FACs) will be examined as the IMF By component varies. Images from the POLAR satellite will be combined with particle measurements from POLAR as well as particle and magnetic field measurements from the DMSP satellites. These data sets will be used to determine the field-aligned currents and the ionospheric conductivity. The information on the currents and ionospheric convection can then be used to determine the way energy is coupled into the ionosphere from the magnetosphere.