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

有人建议美国国家科学基金会支持一项GEM研究，该研究旨在测试流入极光电离层的场向电流来源的模型。利用S3-3卫星上的磁力计、电场探测器和粒子探测器的数据，将测试Siscoe- Sonnerup-Lotko （SSL）模型对日侧场对准电流的预测。建议在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带通道，然后将其添加到数据库中。该数据库将提供更多统计上重要的SSL测试和其他字段对齐电流生成模型。测试场对准电流的边界层源模型对于GEM边界层运动的目标至关重要。将需要这类研究的投入来发展更复杂和更现实的模型。电流的磁尾源也将被检查，例如，通过比较不同行星际磁场条件下夜侧1区电流与尾瓣磁场的大小。研究结果将为耦合和场向电流生成模型提供初步约束，这些模型将作为即将开展的GEM亚暴运动的一部分而开发。

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.