Advanced Modular Incoherent Scatter Radar (AMISR) Graduate Studies: High-Latitude E-region Electrodynamics

高级模块化非相干散射雷达 (AMISR) 研究生课程：高纬度 E 区电动力学

• 批准号: 0538926
• 负责人: Jeffrey Thayer
• 金额: $ 22.78万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0538926&HistoricalAwards=false
• 关键词: Advanced; Modular; Incoherent; Scatter; Radar

The investigators will study E-region electrodynamics at high latitudes using the Advanced Modular Incoherent Scatter Radar (AMISR) systems in Alaska and Resolute Bay. The research will form the foundation for a PhD thesis by a University of Colorado aerospace engineering graduate student. The objective is to exploit the new AMISR radar system to provide height-resolved observations of the electrodynamic properties of the E-region, including electron density, ion motion, current density, Joule heating rates and neutral winds. The unique capabilities of the AMISR system will also help resolve spatial-temporal ambiguities that presently limit these types of studies. The research will focus on two specific science questions: (1) At what altitude does high-latitude ion motion perpendicular to the magnetic field begin to deviate from the convection direction, and how do the ions behave below this altitude, and (2) Can we learn more about upper E region neutral winds using a novel approach to incoherent scatter radar measurements. The study involves the determination of vector velocity fields from E and F region line-of-sight AMISR measurements. These velocity fields will be used to estimate E-region electrodynamic parameters, including the neutral wind. The research will promote teaching, training and learning, and will provide the opportunity for the advancement of a woman engineer/scientist. The techniques will be incorporated into the curriculum of a graduate course in Radar and Remote Sensing. Data acquired will be rapidly and broadly disseminated and new peer-reviewed research will be published that will enhance scientific understanding of the polar E region ionosphere. Societal benefits will result from improvements in the ability to specify and predict space weather. The observational techniques developed for AMISR will be applied to future rocket launches from Poker Flat, Alaska.

研究人员将在阿拉斯加和索鲁特湾使用先进的模块化非相干散射雷达(AMICR)系统研究高纬度地区的E区电动力学。这项研究将为科罗拉多大学航空航天工程研究生的博士论文奠定基础。其目的是利用新的阿米西里雷达系统对E区的电动力学性质进行高度分辨率观测，包括电子密度、离子运动、电流密度、焦耳加热率和中性风。阿米西里研究系统的独特能力也将有助于解决目前限制这类研究的时空歧义。这项研究将集中在两个具体的科学问题上：(1)垂直于磁场的高纬度离子运动在什么高度开始偏离对流方向，以及离子在该高度以下的行为如何，以及(2)我们能否利用一种新的非相干散射雷达测量方法来了解更多关于E区上部中性风的信息。这项研究涉及从E区和F区视线阿米西里R测量确定矢量速度场。这些速度场将被用来估计E区的电动力参数，包括中性风。这项研究将促进教学、培训和学习，并将为女工程师/科学家的进步提供机会。这些技术将被纳入雷达和遥感研究生课程的课程。将迅速和广泛地传播所获得的数据，并将发表新的经同行审查的研究报告，以加强对极地E区域电离层的科学了解。指定和预测空间天气的能力的提高将带来社会效益。为阿米西里研究开发的观测技术将应用于未来从阿拉斯加扑克平原发射的火箭。