GEM: Mapping of Field-Aligned Currents as a Function of the Interplanetary Magnetic Field

这项建议将制定定量的全球地图的分布高纬度场向电流参数化IMF的方向和强度，并按季节。这将是自20多年前根据TRIAD数据制作原始地图以来首次重新审视这一问题的调查。从那时起已经学到了很多东西，数据将在合并方面得到更正确的处理。此外，将采用一种新的分析技术，该技术考虑到在卫星上观测到的磁扰动的两个水平分量，这将允许放宽“无限电流片”模型的假设，以解释数据。

This proposal will develop quanitative global maps of the distribution of high latitude field-aligned currents parameterized by IMF orientation and strength, and by season. This will be the first investigation to revisit this issue since the original maps were produced from TRIAD data over 20 years ago. Much has been learned since that time and the data will be treated more correctly in terms of binning. In addition, a new analysis technique will be utilized which consideres both horizontal components of the magnetic perturbation observed at the satellite, This will allow a relaxation of the assumption of the "infinite current sheet" model for the interpretation of the data.