GEM: Continued Operation of the Magnetometer Array for Cusp and Cleft Studies, West (MACCS-West)

GEM：用于尖端和裂隙研究的磁力计阵列的持续运行，West (MACCS-West)

• 批准号: 9401524
• 负责人: Mark Engebretson
• 金额: $ 18万
• 依托单位: Augsburg 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: 1994-08-01 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9401524&HistoricalAwards=false
• 关键词: GEM; Continued; Operation; 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.

建议继续与奥格斯堡学院合作，继续操作和分析最近安装的 MACCS 磁通门磁力计阵列的数据，该阵列位于加拿大北极的尖角/裂隙纬度（75° 至 80°）。1992 年和 1993 年夏天，在北极东部的小社区部署了 8 个磁力计。这 8 个观测站在磁力当地时间在纬度地区的时间跨度近 5 个小时。 对于磁层边界层的地面观测很有价值，并且可以将阿拉斯加和加拿大西部的现有磁力计站点连接到西部，将格陵兰岛和巴芬岛的站点连接到东部。 此外，这里建议在加拿大三个标准天文台（Resolute、剑桥湾和贝克湖）添加数据记录仪。 这将允许从这些站点获取 1 秒数据，并定期将此数据与 MACCS 数据库结合起来 这样就有效地将 MACCS 阵列向西延长了一个小时。 MACCS 阵列的目的是研究与磁层尖点和邻近区域相关的电离层电流、等离子体流和波。 与开始在同一区域运行的雷达系统相结合，这些磁力计将提供有关尖点对流电动力学的高分辨率二维数据。 MACCS数据还包含大量高纬度地区 亚风暴签名。 当 GEM 计划开始其亚暴活动时，建议使用 MACCS 数据来研究与北向 IMF 相关的小型收缩椭圆形亚暴，以及常规亚暴的恢复阶段，在此期间活动在 MACCS 阵列上向极地移动。