Mid-Continent Magnetoseismic Chain (McMaC)

中部大陆磁震链 (McMaC)

• 批准号: 0245139
• 负责人: Peter Chi
• 金额: --
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-15 至 2009-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0245139&HistoricalAwards=false
• 关键词: Mid; Continent; Magnetoseismic; Chain; McMaC

This project will fund the installation of 9 new magnetometers in the U.S. and Mexico. Data from these new stations will be combined with data from the CANOPUS magnetometers in Canada and the IGPP-LANL magnetometers in the U.S. to form a mid-continent magnetometer chain of 22 magnetometers. The project will develop the data analysis tools for using the magnetometer in a manner that is somewhat analogous to seismology and is therefore being called "magnetoseismology." Ultra-Low-Frequency waves detected by the magnetometers will be used to determine the location of the plasmapause and to determine the plasma density within the magnetosphere. Two methods of analysis will be investigated. The first is an eigenmode analysis which determines the mass loading on a magnetic field line be the eigenfrequency of the waves on the field line. The second method will utilize the time of arrive of impulsive signals to determine the density structure within the magnetosphere. The two techniques will provide an inexpensive method of remote sensing of the plasma density of the magnetosphere. The technique will be validated by using in situ measurements from a variety of satellites. The project will provide data that can be used in space weather nowcasting and forecasting. The project will include participation by high school students and university undergraduates. The density data resulting from the project will be an essential resource for two UCLA Ph.D students doing related research.

该项目将资助在美国和墨西哥安装9个新的磁力计。 来自这些新台站的数据将与来自加拿大CANOPUS磁力计和美国IGPP-LANL磁力计的数据合并，形成一个由22个磁力计组成的中大陆磁力计链。 该项目将开发数据分析工具，以某种类似于地震学的方式使用磁力计，因此被称为“磁震学”。“磁力计探测到的超低频波将用于确定等离子体层顶的位置和磁层内的等离子体密度。 将研究两种分析方法。 第一种是本征模分析，它确定磁场线上的质量负载是场线上的波的本征频率。 第二种方法是利用脉冲信号的到达时间来确定磁层内的密度结构。 这两种技术将提供一种廉价的磁层等离子体密度遥感方法。 该技术将通过使用各种卫星的现场测量数据加以验证。 该项目将提供可用于空间气象临近预报和预报的数据。 该项目将包括高中生和大学本科生的参与。 该项目产生的密度数据将成为两名加州大学洛杉矶分校博士生进行相关研究的重要资源。