Space Weather: Determining the Relationship between Substorm Onset and Interplanetary Conditions and Nightside Ionospheric Conductivity

空间天气：确定亚暴爆发与行星际条件和夜间电离层电导率之间的关系

• 批准号: 9819920
• 负责人: Aaron Ridley
• 金额: $ 16.76万
• 依托单位: Southwest Research Institute
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819920&HistoricalAwards=false
• 关键词: Space; Weather; Determining; Relationship; between

This proposal focuses on how the expansion phase of a substorm [as first described by Akasofu, 1964] is triggered. The expansion phase is the period of time in which there exist extremely large electric fields and high fluxes of energetic particles in the ionosphere. The mechanism which triggers the start of the expansion phase is still a mystery, after many years of research, although many interesting and well thought out theories have been put forth. The investigation proposed here will focus on determining the influence of (1) the interplanetary magnetic field, and (2) the ionospheric conductivity on the expansion phase onset. This is an important proposal because it will address a number of fundamental issues in the field of substorm expansion phase onsets.

这一建议的重点是如何引发亚暴的膨胀阶段[如Akasofu，1964年首次描述的那样]。 膨胀相是电离层中存在极大电场和高能粒子高通量的时间段。 引发膨胀阶段开始的机制仍然是一个谜，经过多年的研究，尽管已经提出了许多有趣和深思熟虑的理论。 这里提出的研究将集中在确定（1）行星际磁场，（2）电离层电导率对膨胀阶段开始的影响。 这是一个重要的建议，因为它将解决亚暴扩展阶段开始领域的一些基本问题。