M-I Coupling: Global Scale Imaging of High Latitude Poynting Flux

研究人员将研究高纬度坡印亭通量在大尺度磁层-电离层耦合中的作用。能量从磁层传输到电离层的主要方式是高纬度极地地区的坡印亭通量和粒子降水。坡印亭磁通量将由来自Irdium卫星的磁力计测量和来自SuperDARN雷达系统的电场测量相结合得出。这项研究涉及三个具体目标：(1)通过确定坡印亭磁通量的空间分布来确定电磁能通量的主要区域；(2)通过寻找负坡印亭磁通量区域来确定中性风发电机的影响；以及(3)确定坡印亭磁通量与其他磁层-电离层耦合现象之间的关系。合并后的数据集将用于计算全球尺度的坡印亭通量和进入大气的能量沉积。

The investigators will study the role of high latitude Poynting flux in large-scale magnetosphere-ionosphere coupling. The principal means by which energy is transported from the magnetosphere to the ionosphere is by Poynting flux and particle precipitation in the high latitude polar regions. The Poynting flux will be derived by combining magnetometer measurements from the Iridium satellites with electric field measurements from the SuperDARN radar system. The study involves three specific objectives: (1) Establish the principal regions of electromagnetic energy flux by determining the spatial distribution of the Poynting flux; (2) Identify the influence of the neutral wind dynamo by looking for regions of negative Poynting flux; and (3) determine correlations between Poynting flux and other magnetosphere-ionosphere coupling phenomena. The combined data set will be used to calculate the global scale Poynting flux and energy deposition into the atmosphere.