GEM MACCS-East: A Magnetometer Array for Cusp and Cleft Studies

GEM MACCS-East：用于尖点和裂口研究的磁力计阵列

• 批准号: 9401733
• 负责人: W. Jeffrey Hughes
• 金额: --
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9401733&HistoricalAwards=false
• 关键词: GEM; MACCS; East; Magnetometer; Array

It is proposed to continue to operate and analyze data from the recently installed MACCS array of fluxgate magnetometers located at cusp/cleft latitudes (75o to 80o in arctic Canada in a joint effort with Augsburg College. During the summers of 1992 and 1993 8 magnetometers were deployed at small communities in the eastern arctic. These eight observatories span nearly 5 hours in magnetic local time in the latitude region most valuable for ground-based observations of the magnetospheric boundary layer, and serve to connect existing magnetometer sites in Alaska and western Canada to the west and sites on Greenland and Baffin Island to the east. In addition, it is proposed here to add data loggers at three standard Canadian observatories (Resolute, Cambridge Bay and Baker Lake). This would allow to obtain 1 s data from these sites and routinely combine this data with the MACCS data base so effectively extending the MACCS array another hour to the west. The purpose of the MACCS array is to study ionospheric currents, plasma flows, and waves associated with the magnetospheric cusp and neighboring regions. In association with the radar systems beginning to operate in this same area, these magnetometers will provide high resolution, two-dimensional data on the electrodynamics of cusp convection. The MACCS data also contain numerous high latitude substorm signatures. As the GEM program begins its substorm campaign, it is proposed to use MACCS data to study the small, contracted oval substorms associated with northward IMF, and the recovery phase of regular substorms during which the activity moves poleward over the MACCS array.

建议与奥格斯堡学院共同努力，继续操作和分析最近安装的位于尖点/裂缝纬度（加拿大北极75度至80度）的MACCS磁通门磁力计阵列的数据。在1992年和1993年夏季，在北极东部的小社区部署了8个磁力计。这八个观测站在纬度地区的地磁当地时间跨度近5小时，对磁层边界层的地面观测最有价值，并将阿拉斯加和加拿大西部的现有磁强计站点连接到西部，将格陵兰和巴芬岛的站点连接到东部。此外，建议在加拿大三个标准观测站（Resolute、剑桥湾和贝克湖）增加数据记录仪。这将允许从这些站点获取1 s数据，并定期将该数据与MAMCS数据库联合收割机结合起来，从而有效地将MAMCS阵列向西延伸一个小时。MACCS阵列的目的是研究电离层电流、等离子体流和与磁层尖点和邻近区域相关的波。这些磁力计将与开始在同一地区工作的雷达系统一起，提供关于尖点对流电动力学的高分辨率二维数据。MACCS数据还包含许多高纬度亚暴信号。随着GEM计划开始其亚暴活动，建议使用MACCS数据来研究与向北IMF相关的小型收缩椭圆形亚暴，以及定期亚暴的恢复阶段，在此期间，活动在MACCS阵列上向极移动。