GEM: Support for the Operation and Analysis of Data from the Induction Magnetometer at Iqaluit, NW, Canada: A Conjugate Site to South Pole, Antarctica

该提案要求为今后三年（全球监测系统边界层活动的剩余时间）提供资金，以分析从加拿大西北地区伊卡卢伊特运行的感应磁力计收到的数据，该磁力计名义上与南极洲南极磁共轭。 磁力计于1993年6月在伊卡卢伊特建造和安装， 根据GEM计划和资助号ATM-9111929提供。 边界层监测运动的主要目标是了解太阳风与地球磁场的相互作用以及能量在白昼边界的传输。 由于边界所嵌入的介质的无碰撞性质，波是这种能量传输的重要媒介。 感应磁力计测量地球磁层和太阳风中自然产生的超低频波的高频分量（大于0.1 Hz），这是传统磁力计无法做到的。 地面测量和磁层中这些波的研究很重要，因为它们的波长足够短，可以在地球磁场中作为波包装器传播。 在这种传播方式下，Pc1和Pc2波可以作为地磁场拓扑及其边界的探测器。 它们的共振产生的离子和修改其传播的冷等离子体人口，间接提供了这些粒子的研究。 MW地区伊卡卢伊特的位置至关重要，因为该地点允许通过使用南极洲的几个地点对ULF波进行全球研究，这些波也在格陵兰的Sondre Stromfjord地点进行测量。 在相位相差180度的两个相对半球位置处的波形中的重复结构可以是闭合磁场线的指示。 两个半球中不同位置上的站点之间的时间延迟可以给出产生波的源的尺度大小和/或运动。 进行单点测量的航天器很难确定边界，但如本文所建议的那样，与多个地面测量相关联，人们可以开始建立重要的昼侧磁层边界的全球图像。 由于在提供"空间实况"方面的这一相关工作，今后的地面测量可以监测这些边界及其对太阳风的依赖性，并最终监测太阳条件。

This proposal is a request for funds for the next three years (remainder of the GEM Boundary Layer Campaign) to analyze the data that is being received from an induction magnetometer operating at Iqaluit, Northwest Territories, Canada which is nominally magnetically conjugate to South Pole, Antarctica. The magnetometer was built and installed at Iqaluit in June, 1993 with funds provided under the GEM program and Grant # ATM-9111929. The major objective of the GEM Boundary Layer Campaign is to understand the interaction of the solar wind with the Earth's magnetic field and the transport of energy across dayside boundaries. Waves are an important mediator of this transport of energy due to the collisionless nature of the medium in which the boundaries are imbedded. Induction magnetometers measure the high frequency component (greater than 0.1 Hz) of naturally occurring ULF waves in the Earth's magnetosphere and in the solar wind which cannot be done with conventional magnetometers. Ground measurement and the study of these waves in the magnetosphere is important because they are of sufficiently short wavelengths to propagate as wave packers in the Earth's magnetic field. In such a mode of propagation the Pc 1 and Pc 2 waves can be used as probes of the topology of the geomagnetic field and its boundaries. Their resonant generation by ions and the modification of their propagation by cold plasma populations, indirectly provides a study of these particles. The location at Iqaluit, MW Territories is vital because this site permits a global study of the ULF waves by using several sites in the Antaractic a which these waves are also measured as well as at the Sondre Stromfjord site in Greenland. Repetitive structure in the wave form at two opposite hemisphere sites 180 degrees out of phase can be an indication of closed magnetic field lines. A time delay between sites at different longitudes in either hemisphere can give scale size and/or motion of the source creating the waves. Spacecraft making single point measurements are hard-pressed to define boundaries, but done in correlation with multiple ground measurements, as proposed here, one can begin to build a global picture of the important dayside magnetospheric boundaries. As a result of this correlative work in providing "space-truth", ground measurements in the future can monitor these boundaries and their dependence upon solar wind and, ultimately, solar conditions.