Space Weather: Investigation of Substorm Trigger, Onset Location, and Intensity

空间天气：亚暴触发、发生位置和强度的调查

• 批准号: 0001665
• 负责人: Kan Liou
• 金额: $ 18万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0001665&HistoricalAwards=false
• 关键词: Space; Weather; Investigation; Substorm; Trigger

The investigators will study magnetospheric substorms using data from the Polar, Geotail, IMP 8, and GOES satellites as well as ground-based observations. Specific research topics include (1) the substorm triggering mechanism, (2) the spatial extent and structure of the magnetotail stretching at geosynchronous altitude, (3) substorm onset location as influenced by solar wind conditions, the relationship between the pre-onset magnetotail stretching and substorm intensity, and (5) magnetotail signatures at geosynchronous orbit prior to pseudo-breakups. The study takes advantage of the high-quality data collected during the International Solar Terrestrial Physics Program. The investigators will establish a data base of observations and conduct statistical studies. Substorms play a central role in the dynamics of Earth's magnetosphere. Understanding substorm triggering is one of the key roadblocks in predicting Space Weather.

研究人员将利用Polar、Geotail、IMP 8和GOES卫星以及地面观测的数据研究磁层亚暴。 具体研究课题包括：（1）亚暴触发机制;（2）磁尾在地球同步高度伸展的空间范围和结构;（3）受太阳风条件影响的亚暴起始位置、起始前磁尾伸展与亚暴强度之间的关系;（5）伪分裂前地球同步轨道上的磁尾特征。 这项研究利用了国际日地物理方案期间收集的高质量数据。 研究者将建立观察数据库并进行统计研究。 亚暴在地球磁层的动力学中起着核心作用。 了解亚暴触发是预测空间天气的关键障碍之一。