Continuing Operation of a Magnetometer Array on the Greenland Ice Cap (MAGIC) to Investigate Propogating Ionospheric Current Systems

格陵兰冰盖上的磁力计阵列 (MAGIC) 持续运行以研究传播电离层电流系统

• 批准号: 9204520
• 负责人: Calvin Robert Clauer
• 金额: $ 37.09万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9204520&HistoricalAwards=false
• 关键词: Continuing; Operation; Magnetometer; Array; Greenland

This proposal is directed toward the operation of an array of unattended, automatic magnetic data collection platforms on the Greenland ice cap and the reduction, distribution and analysis of these data. We propose to make the data from the MAGIC array, after reduction and verification, fully available to those who request it ıMAGIC = Magnetometer Arrary on the Greenland Ice Cap!. The MAGIC array compliments the magnetic stations on the coast of Greenland for the investigation of small-scale, ionospheric current systems. Operation of this array in the interior of Greenland takes advantage of the established logistical support for the Greenland Ice Sheet Program II (GISP II) at the Greenland summit. Thus, it is possible to establish and maintain these stations for a small cost. These magnetic stations form a two-dimensional array with station separation of about 150km. The scientific objective of these magnetic measurements is to investigate small-scale propagating magnetic disturbances which appear to result from moving filamentary field-aligned currents interacting with the ionosphere. Different classes of these systems have now been identified and the origin of the field-aligned currents appears to be the magnetospheric boundary layer and magnetopause region. It is particularly important to have a dense two-dimensional array in order to resolve the motion and structural evolution of these current systems. The MAGIC stations in combination with the existing west coast and east coast Greenland magnetometers and with stations to be deployed in Canada, permit us to observe these phenomena over a sufficient region as to identify their generation location and resolve their motion and spatial evolution as they propagate tailward. Further the comparatively high time resolution (15-s data) of the MAGIC and coastal stations will permit investigations which were limited by the one minute data previously available. This data and the proposed research is important to understanding the physics of the processes that couple energy and momentum from the solar wind to the magnetosphere and ionosphere. The proposed research is a collaborative effort between the University of Michigan, SRI International, and the Danish Meteorological Institute.

该建议针对的是一个数组的操作， 无人值守的自动磁力数据采集平台， 格陵兰冰帽与南极冰盖的减少、分布和分析 这些数据。 我们建议从MAGIC阵列中获取数据， 在减少和核实后， 请求它<$MAGIC =格陵兰冰帽上的磁力计阵列! MAGIC阵列补充了海岸上的磁力站， 格陵兰，用于调查小规模电离层电流 系统. 在格陵兰岛内陆使用这种阵列 利用现有的后勤支助， 格陵兰冰盖计划II（Greenland Ice Sheet Program II，GISP II）。 因此，可以建立和维护这些站点， 一个小成本。 这些磁站形成一个二维阵列 站间距约150公里。 科学目标 这些磁测量的目的是研究小规模的 传播的磁干扰似乎是由 移动的附加场向电流与 电离层 这些系统的不同类别现在已经 确定和场向电流的起源似乎 是磁层边界层和磁层顶区域。 它 具有密集的二维阵列尤其重要， 为了解决这些运动和结构演化 目前的系统。 魔术站与 现有的格陵兰西海岸和东海岸磁力计， 在加拿大部署的站点，允许我们观察这些 现象在足够的区域，以确定其产生 定位并解决它们的运动和空间演变， 向尾部传播。 此外，相对较高的时间分辨率 (15-s数据）的MAGIC和沿海站将允许 以前受一分钟数据限制的调查 available. 这些数据和拟议的研究对以下方面很重要： 了解耦合能量的过程的物理学， 从太阳风到磁层和电离层的动量 拟议的研究是一项合作努力， 密歇根大学，SRI国际，丹麦 气象研究所。