CEDAR: Radar, Optical and Satellite Studies of High Latitude Arcs

本项目旨在利用Sondrestrom非相干散射雷达和全天成像光度计的数据研究高纬度极光弧的结构和动力学。该研究还将利用同时和一致的低空和中高空等离子体和场的原位卫星测量来量化磁层-电离层耦合中涉及的电动力学参数。本项目的主要目标是研究(1)高纬度电弧附近的电结构，重点研究电弧与周围等离子体的相对运动；(2)电弧的雷达、光学和卫星特征之间的关系；(3)极光结构的静时时空变化。计划在未来的活动中，雷达和光学测量将与NASA FAST小型探测卫星的立交桥协调进行。

This project aims to study the structure and dynamics of high latitude auroral arcs using data from the Sondrestrom incoherent scatter radar and an all-sky imaging photometer. The study will also make use of simultaneous and coincident low and mid-altitude in-situ satellite measurements of plasmas and fields to quantify electrodynamic parameters involved in magnetosphere-ionosphere coupling. The main objectives of this project are to study (1) the electrical structure near high latitude arcs with emphasis on the relative motion between the arc and the ambient plasma, (2) the relationship between radar, optical and satellite signatures of arcs, and (3) quiet time temporal and spatial variations of auroral structures. A future campaign is planned in which radar and optical measurements will be made in coordination with overpasses of the NASA FAST Small Explorer satellite.