CEDAR: Studies of Magnetosphere Ionosphere Thermosphere Coupling

CEDAR：磁层电离层热层耦合研究

• 批准号: 9102439
• 负责人: Odile de la Beaujardiere
• 金额: $ 18万
• 依托单位: SRI International
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-15 至 1995-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9102439&HistoricalAwards=false
• 关键词: CEDAR; Studies; Magnetosphere; Ionosphere; Thermosphere

The purpose of this CEDAR project is to better understand the coupling between the magnetosphere and ionosphere, and to quantify the resultant energy input into the neutral atmosphere. The proposed strategy has two components: first, to establish empirical models of convection in the high latitude ionosphere for various parameters of the interplanetary medium and magnetic activity; second, to examine carefully selected events that correspond to stable wind conditions. A combination of empirical modeling and case studies is needed because the ionospheric conditions are highly variable; the ionosphere-magnetosphere system is controlled by several processes, each with a response time characterized by different time scale. Therefore, the empirical models might not provide an accurate description of the pattern obtained for individual circumstances even when events corresponding to stable conditions are considered. Another aspect of our approach will be, when appropriate, to map electric fields, currents, and auroral features to the magnetospheric equatorial plane.

这个CEDAR项目的目的是更好地了解 磁层和电离层之间的耦合， 量化输入到中性大气中的合成能量。 拟议的战略有两个组成部分：第一，建立 高纬电离层对流的经验模式 对于行星际介质和磁的各种参数， 活动;第二，仔细检查选择的事件， 对应稳定的风力条件。 结合经验 需要建模和案例研究，因为电离层 条件是高度可变的;电离层-磁层 一个系统由多个进程控制，每个进程都有一个响应 时间以不同的时间尺度为特征。 因此 经验模型可能无法准确描述 即使事件发生时， 对应于稳定条件。 另一 我们的方法的一个方面将是，在适当的时候， 磁场、电流和极光特征对磁层的影响 赤道面