GEM: An S3-3 Satellite Test of Models of Boundary Layer Driven Field -Aligned Currents

建议国家科学基金会支持一项旨在测试流入极光电离层的场向电流来源模型的全球地磁观测研究。利用S3-3卫星上的磁强计、电场探测器和粒子探测器的数据，将检验Siscoe-Sonnerup-Lotko(SSL)模型对日侧场向电流的预测。建议对第一年利用现有数据库进行初步研究。在第二年和第三年，将开发软件来分析剩余的可用极光区通行证，然后将其添加到数据库中。该数据库将提供对SSL场对准电流产生的其他模型进行更具统计意义的测试。对场向电流边界层源模型的测试对于全球海洋观测平台边界层运动的目标至关重要。这类研究的投入将被用来开发更复杂、更现实的模型。还将检查磁尾电流源，例如，通过比较各种行星际磁场条件下夜侧区域1电流的大小与尾叶磁场的大小。调查结果将为将作为即将开展的关于亚暴的全球创业板运动的一部分而开发的耦合和场对齐电流产生模型提供初步限制。

It is proposed that the National Science Foundation support a GEM study designed to test models for the source of the field-aligned currents flowing into the auroral ionosphere. Utilizing data from the magnetometer, electric field probes and particle detectors on the S3-3 satellite, the predictions of the Siscoe- Sonnerup-Lotko (SSL) model for day-side field-aligned currents will be tested. A preliminary study utilizing existing data bases is proposed for the first year. In the second and third years, software will be developed to anlyze the remainder of available auroral zones passes which will then be added to the data base. This data base will provide more statistically significant tests of SSL and other models of field-aligned current generation. Testing of models of boundary layer sources of field-aligned currents is critical to the objectives of the GEM Boundary Layer Campaign. Inputs from a study of this type will be required to develop more sophisticated and realistic models. Magnetotail sources of currents will also be examined, for example by comparing the magnitude of nightside Region 1 currents to the tail lobe magnetic field for various interplanetary magnetic field conditions. Findings will provide preliminary constraints on models of coupling and field-aligned current generation to be developed as part of the upcoming GEM Campaign on Substorms.