Transverse Acceleration of Ionospheric Ions in the Auroral Zone

极光区电离层离子的横向加速度

• 批准号: 9612349
• 负责人: Tom Chang
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-02-01 至 2001-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9612349&HistoricalAwards=false
• 关键词: Transverse; Acceleration; Ionospheric; Ions; Auroral

This project will launch a systematic theoretical investigation of micro-mesoscale ion evolutionary phenomena in the Earth's ionosphere and magnetosphere. Important space plasma research problems in coming years will be addressed toward global issues. In-situ observations are becoming multi-spacecraft in scope, and theoretical models are being forced to confront issues of nonlocality and multiscale interactions. Investigators encounter microscopic processes, such as wave-particle interactions and macroscopic effects connected with large electric and magnetic fields, where inhomogeneities and flow are important. This research has been aimed at understanding charged particle energization, diffusion and transport phenomena occurring at both micro- and mesoscales. Specifically, the PI will continue his studies of the auroral ion acceleration problem, the production of counterstreaming electrons, the nonlocal generation, propagation and saturation of plasma turbulence, mesoscale resonant wave-particle interactions, and mode conversion and mode-mode coupling processes.

该项目将对地球电离层和磁层中的微-中尺度离子演化现象展开系统的理论研究。 未来几年重要的空间等离子体研究问题将面向全球问题进行解决。 现场观测正在成为多航天器的范围，和理论模型被迫面对的非局域性和多尺度相互作用的问题。 研究人员遇到微观过程，如波粒相互作用和宏观效应与大电场和磁场，其中不均匀性和流动是重要的。 这项研究的目的是了解发生在微观和中观尺度上的带电粒子的扩散，扩散和传输现象。 具体而言，PI将继续他的极光离子加速问题，逆流电子的生产，非本地生成，等离子体湍流的传播和饱和，中尺度共振波粒相互作用，模式转换和模式模式耦合过程的研究。