CEDAR: Incoherent Scatter Radar (ISR) Measurements of Flow Bursts and Relations to Auroral Electrodynamics

该项目是利用地面光学和雷达对高纬度电离层的遥感和对THEMIS航天器获得的内部等离子体片的测量相结合的方法来研究磁层和电离层之间的电动力学耦合。这项工作将创建位于电离层对流电场Harang不连续区域附近的增强流爆发经验图，并评估流爆发与极光和磁层活动的关系，特别是包括极光极地边界强化、南北极光结构、极冠对流和亚暴爆发的时间。将使用的陆基仪器包括非相干散射雷达(Sondrestrom、阿米西里R和RISR)、SuperDARN雷达、磁强计和全天成像阵列。这项工作的目标是为亚风暴爆发时间这一长期存在的问题的潜在解决方案提供经验测试。

This project is to investigate the electrodynamical coupling between the magnetosphere and ionosphere using a combination of ground-based optical and radar remote sensing of the high latitude ionosphere with measurements of the inner plasma sheet acquired by the THEMIS spacecraft. This work will create empirical maps of bursts of enhanced flows, localized near the Harang discontinuity region of the ionospheric convection electric field, and assess the relationship of the flow bursts with auroral and magnetospheric activity, specifically including auroral poleward boundary intensifications, north-south auroral structuring, polar cap convection, and the timing of substorm onset. Ground-based instrumentation to be used includes incoherent scatter radars (Sondrestrom, AMISR, and RISR), SuperDARN radars, and magnetometer and all-sky imaging arrays. The goal of this effort is to provide empirical tests of a potential solution to the long-standing problem of substorm onset timing.