Multiple Incoherent Scatter Radar, Riometer and MagnetometerInvestigations of Wave Phenomena Originating in the High-latitude Ionosphere and Magnetosphere

地球存在于电离和磁化的气流中 从太阳发出的太阳风地球及其 磁场改变了超音速风的方向， 地球的磁场和电离的封闭空间 存在的气体称为磁层，延伸10-12 地球半径在太阳的方向，和一百或更多 在反太阳方向的地球半径。在磁层 边界与太阳风的相互作用产生电 数百千伏的电位差， 数百万安培的电流沿着磁力线流过 极地电离层，然后回到太阳风边界。的 电流存款大量的能量在电离层， 在电离层中产生巨大的电磁波（磁流体波） 和中性大气（大气重力波）。使用 格陵兰Sondemfjord非相干散射雷达， 辅助磁力计和磁强计测量以及极光 图像，磁流体和重力波的基础研究， 它们与电离层电流、粒子 将进行降水和电离层加热。这些 研究将提供有关耦合的物理数据， 太阳风对极地地区磁层大气的影响。

The earth resides in a flow of ionized and magnetized gases emanating from the sun called the Solar Wind. The earth and its magnetic field divert the flow of this supersonic wind, and the confined space in which the earth's magnetic field and ionized gases reside is called the magnetosphere, that extends 10-12 earth radii in the direction of the sun, and a hundred or more earth radii in the antisolar direction. At the magnetosphere boundary the interaction with the solar wind generates electric potential differences of hundreds of kilovolts, and currents of millions of amperes flow down magnetic field lines, through the polar ionosphere, and back out to the solar wind boundary. The currents deposit large amounts of energy in the ionosphere, and set up large waves in the ionosphere itself (hydromagnetic waves) and in the neutral atmosphere (atmospheric gravity waves). Using the incoherent scatter radar at Sondestromfjord, Greenland, and auxillary magnetometer and riometer measurements and auroral images, basic studies of both hydromagnetic and gravity waves and their relationship to ionospheric currents, particle precipitation and ionospheric heating will be carried out. These studies will provide data on the physics of the coupling of the solar wind to the magnetosphere-atmosphere in the polar regions.