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

这一建议侧重于亚暴的扩展阶段是如何被触发的[由Akasofu于1964年首次描述]。膨胀期是电离层中存在极大电场和高能粒子高通量的时期。经过多年的研究，触发膨胀阶段开始的机制仍然是一个谜，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于确定(1)行星际磁场和(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。

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.