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）是在行星弓形激波附近观察到的动力学现象，其特征是加热的等离子体和流动偏转。本提案的目的是确定氢氟烷烃的特性及其生成机制。这项研究将系统地调查两种类型的氢氟烷烃。它们是与行星际磁场不连续性有关的传统高频磁场和在没有磁场不连续性的情况下发生的自发高频磁场。这项研究将使用来自Cluster和THEMIS卫星的大型数据库，加上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，这笔赠款将资助一名女研究生。本研究的结果将用于PI的课程。她将提供数据库。