Collaborative Research: GEM--Hot Flow Anomalies at the Earth's Bow Shock and Their Geomagnetic Effects

合作研究：GEM--地球弓形激波处的热流异常及其地磁效应

• 批准号: 1303689
• 负责人: Hui Zhang
• 金额: $ 23.37万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1303689&HistoricalAwards=false
• 关键词: Collaborative; Research; GEM; Hot; Flow

Hot flow anomalies (HFAs) are kinetic phenomena observed near planetary bow shocks that are characterized by heated plasma and flow deflection. The objective of this proposal is to determine the properties of HFAs and their generating mechanisms. The study will systematically survey two types of HFAs. They are traditional HFAs which are associated with interplanetary magnetic field discontinuities and spontaneous HFAs which occur in the absence of magnetic field discontinuities. This study will use a large data base from the Cluster and THEMIS satellites coupled with analytic theory and hybrid simulations.The Principal Investigator (PI) is a young woman assistant professor and this grant will support a female graduate student. The results of this study will be used in the PI's classes. She will make the data base available.

热流异常（HFA）是在行星弓激波附近观察到的动力学现象，其特征是加热等离子体和流动偏转。该提案的目的是确定 HFA 的特性及其生成机制。该研究将系统地调查两种类型的 HFA。它们是与行星际磁场不连续性相关的传统 HFA 和在没有磁场不连续性的情况下发生的自发 HFA。这项研究将使用来自 Cluster 和 THEMIS 卫星的大型数据库，并结合分析理论和混合模拟。首席研究员 (PI) 是一位年轻的女助理教授，这笔赠款将支持一名女研究生。这项研究的结果将在 PI 的课程中​​使用。她将提供数据库。