Collaborative Research: GEM: Understanding Connections between Earth’s Magnetotail and Ionosphere through Imaging

合作研究：GEM：通过成像了解地球磁尾和电离层之间的联系

• 批准号: 2109341
• 负责人: Roxanne Katus
• 金额: $ 9.96万
• 依托单位: Eastern Michigan University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2109341&HistoricalAwards=false
• 关键词: Collaborative; Research; GEM; Understanding; Connections; Collaborative; Research; GEM; Understanding; Connections

Magnetosphere-ionosphere coupling is the process connecting hot, low density plasma in the magnetosphere with the cold, high density plasma in the ionosphere. This coupling is especially important during geomagnetic storms and substorms when increasing currents in the magnetosphere close through the ionosphere, resulting in increased outflow of ionospheric plasma into the magnetosphere and increased precipitation of energized magnetospheric plasma into the ionosphere. This process, important to understanding space weather impacts, will be studied with a combination of space-based observations and ground-based auroral imagers and the NSF-supported Poker Flat meridian spectrograph. The project supports research of a graduate student from a member of an underrepresented group in STEM and three women in early career stages.Coupling between the Earth’s ionosphere and magnetosphere is a critical component of the dynamics that occur during storms and substorms. To improve understanding of the connections between phenomena in the magnetotail and in the ionosphere, the research will combine global imaging of the magnetosphere using energetic neutral atoms with auroral imaging of the ionosphere. These techniques will be supported by in situ measurements and global modeling. Case studies of particular active intervals will be used as well as statistical studies that include superposed epoch analyses. The following science questions will be addressed: (1) Under what conditions do we observe both energized ions in the magnetotail and auroral enhancements? (2) What is the temporal relationship between ion energization in the magnetotail and auroral enhancements? (3) What is the spatial relationship between mesoscale regions of energized ions in the magnetotail and auroral enhancements?This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

磁层 - 离子层耦合是将磁层中热，低密度血浆与电离层中冷，高密度等离子体连接起来的过程。当磁层中的电流增加时，这种耦合在地磁风暴和实体中尤为重要，从而导致电离层等离子体的出口增加到磁层中，并提高了通电磁层等离子体到电离层中的精度。对于理解太空天气影响的重要性，这一过程将通过基于空间的观测和地面极光图像和NSF支持的扑克平面子午光谱仪的结合进行研究。该项目支持从STEM中代表性不足的人群和三名妇女在职业生涯早期阶段的研究生进行研究。地球电离层与磁层之间的结合是暴风雨和近代过程中发生的动态的关键组成部分。为了提高磁尾和电离层中现象之间的连接的理解，该研究将使用能量中性原子与电离层的极光成像结合磁层的全局成像。这些技术将得到原位测量和全球建模的支持。将使用特定主动间隔的案例研究以及包括超级时期分析的统计研究。将解决以下科学问题：（1）在磁尾和极光增强的离子能量离子之间的时间关系是什么？ （2）磁尾和极光增强的离子能量之间的时间关系是什么？ （3）磁尾和极光增强中能量离子的中尺度区域之间的空间关系是什么？该奖项反映了NSF的法定任务，并通过使用基金会的知识分子优点和更广泛的影响审查标准来评估被认为是宝贵的支持。