NSWP: Studying the Phenomenology of the Calm before the Storm in CIR/Magnetosphere Interactions: Preconditioning of the Magnetosphere prior to High-Speed Streams

这一数据分析项目调查“风暴前的平静”现象，这是在驱动地磁暴的高速太阳风之前经常出现的非常微弱的地磁活动间隔。典型的无风间隔期为两天。这个项目的目标是确定（1）风暴前的平静是系统发生的还是随机发生的现象，（2）太阳风的什么性质引起了平静，（3）平静对随后的地磁风暴有什么影响。将使用的主要数据来源是ACE卫星提供的太阳风数据和洛斯阿拉莫斯地球同步卫星提供的粒子通量数据。将使用的其他数据是标准磁性指数Kp、Dst和AE。该项目涉及太阳风研究和磁层物理学研究。它将增进对影响地球磁层和空间气象的基本过程的了解。该项目还将参加每年夏天在洛斯阿拉莫斯举行的科学教师暑期外展计划。

This data-analysis project investigates the phenomenology of "the calm before the storm", which are intervals of very weak geomagnetic activity that often occur prior to the high-speed solar wind streams that drive geomagnetic storms. A typical calm interval has a duration of two days. The objectives of this project are to determine (1) whether the calm before the storm is a systematically occurring or a randomly occurring phenomena, (2) what properties of the solar wind give rise to the calms, and (3) what the effects of the calms are on the ensuing geomagnetic storms. The primary data sources that will be used are the solar wind data from the ACE satellite and the particle flux data provided by the Los Alamos geosynchronous satellites. Additional data that will be used are the standard magnetic indices, Kp, Dst, and AE. The project involves both solar-wind research and magnetospheric-physics research. It will advance the understanding of fundamental processes that affect the Earth's magnetosphere and space weather. The project will also participate in an ongoing summer outreach program for science teachers that is held each summer at Los Alamos.