Collaborative Research: GEM--Global Propagation Characteristics of Electromagnetic Ion Cyclotron Waves

GSTDTAP

项目编号	1602560
	Collaborative Research: GEM--Global Propagation Characteristics of Electromagnetic Ion Cyclotron Waves
	Hyomin Kim
主持机构	New Jersey Institute of Technology
项目开始年	2017
	2017-08-01
项目结束日期	2020-07-31
资助机构	US-NSF
项目类别	Continuing grant
项目经费	19214(USD)
国家	美国
语种	英语
英文摘要	The focus of project is to investigate the creation, propagation, and dissipation electromagnetic ion cyclotron waves (EMIC) in the near-Earth space environment. EMIC waves are created by the interaction of plasma with the Earth's magnetic field. These waves play an important role in both the energization and loss of particles in the Van Allen radiation belts. Since the radiation belts overlap the region where satellites operate understanding the factors that can change their intensity is an important aspect of predicting space weather impacts. This project will use a combination of observations and numerical modeling to address EMIC wave dynamics. Most previous modeling in this area has used ray-tracing methods. This project takes the novel approach of using a full wave model to simulate the wave dynamics. The project will support the efforts of young female scientist who is serving as the PI. It will also provide support to PhD graduate student. The investigators will also plan to provide opportunities for undergraduates to participate in the research through partnership with National Undergraduate Fellowship Program in Plasma Physics and Fusion Energy Sciences program. More specifically this project addresses the following questions; (a) How do equatorially generated EMIC waves reach the ground?; (b) How is EMIC wave propagation affected by geomagnetic activity?; and (c) What are the relative contributions of magnetospheric/ionospheric parameters and wave normal angle to EMIC wave propagation from the magnetosphere to the ionosphere? To achieve this goal, the investigators plan to perform full-wave simulations employing recently developed 2D full-wave code with realistic plasma parameters. We will also analyze recent observations of these waves by Van Allen Probes, THEMIS and GOES satellites and compare them with observations from the ground magnetometer network.
URL	查看原文
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/71318
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Hyomin Kim.Collaborative Research: GEM--Global Propagation Characteristics of Electromagnetic Ion Cyclotron Waves.2017.