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

研究人员将利用极地、Geotail、IMP 8和GOES卫星以及地面观测数据研究磁层亚暴。具体研究内容包括：(1)亚暴触发机制；(2)地球同步高度磁尾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；(5)伪分裂前地球同步轨道磁尾特征。这项研究利用了国际太阳地球物理项目收集的高质量数据。调查人员将建立一个观察数据库并进行统计研究。亚暴在地球磁层动力学中起着核心作用。了解亚暴的触发是预测太空天气的关键障碍之一。

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.