Global Electrodynamics of the Aurora during Northward Interplanetary Magnetic Field (IMF) and Associated Ionosphere-Magnetosphere Interactions

北向行星际磁场（IMF）期间极光的整体电动力学及相关电离层-磁层相互作用

• 批准号: 0536868
• 负责人: Judy Cumnock
• 金额: $ 48.73万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-03-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0536868&HistoricalAwards=false
• 关键词: Global; Electrodynamics; Aurora; during; Northward

Transpolar auroral arcs are an intriguing phenomenon that has not yet been fully explained. It relates to the complicated magnetosphere configuration and dynamics and complex magnetosphere-ionosphere coupling that characterize northward interplanetary field conditions. This is a 5-year data analysis project utilizing data sets from the POLAR, IMAGE and DMSP satellites, solar wind monitors and the SuperDARN radar network in addition to model results from advanced magnetosphere-ionosphere coupling models to address a number of outstanding questions on this phenomenon. Three specific objectives of the proposed project are: (1) Determine the relationship between transpolar arcs and other auroral phenomena that occur simultaneously, such as auroral substorms; (2) Determine the relation of transpolar arcs with ionospheric convection patterns, precipitating particles, and field-aligned currents in both hemispheres; and (3) Investigate the magnetospheric structure and dynamics during transpolar arc evolution.The broader impacts of the project includes graduate student participation and the promotion of women in science.

跨极极光弧是一个有趣的现象，至今尚未得到充分的解释。 它涉及复杂的磁层结构和动力学以及复杂的磁层-电离层耦合，这些都是北向行星际磁场条件的特征。 这是一个为期5年的数据分析项目，利用POLAR、IMAGE和DMSP卫星、太阳风监测器和SuperDARN雷达网的数据集，以及先进的磁层-电离层耦合模型的模型结果，以解决有关这一现象的一些悬而未决的问题。 拟议项目的三个具体目标是：（1）确定跨极弧与同时发生的极光亚暴等其他极光现象之间的关系;（2）确定跨极弧与电离层对流模式、沉淀粒子和两个半球的场向电流之间的关系;以及（3）研究跨极弧演化过程中的磁层结构和动力学。该项目的更广泛影响包括研究生参与和促进妇女参与科学。