VLF Remote Sensing of Thunderstorm and Radiation Belt Coupling to the Ionosphere

该项目将继续测量和记录无线电 南极洲帕尔默站的海浪 主要实验 涉及监测来自遥远的极低 频率（VLF）发射机，并使用振幅的变化 和接收信号的相位来推断 大气层的性质沿着之间的大圆路线 接收器和发射器。 特别是雷击 产生的电磁波可以穿透磁层 与货车艾伦辐射带中的高能电子相互作用。 其中一些颗粒可以沉淀到上层 在大气中，它们引起电导率的突然变化， 因此任何无线电波的扰动， 通过该部分大气传播。 因此 对发射机信号的监视可以用于绘制出 闪电引起的大气扰动， 公里外 调查人员还将操作设备 它将监测无线电波的自然来源，例如 闪电产生的天电。 斯坦福大学和首席研究员是 甚低频无线电波及其相互作用的研究 地球空间环境。

This project will continue the measurement and recording of radio waves at Palmer Station, Antarctica. The principal experiment involves the monitoring of transmissions from distant very low frequency (VLF) transmitters, and using variations in the amplitude and phase of the received signal to deduce changes in the properties of the atmosphere along the great circle route between the receiver and transmitter. In particular, lightning strokes produce waves that can penetrate into the magnetosphere where they interact with energetic electrons in the van Allen radiation belts. Some of these particles can be precipitated into the upper atmosphere where they cause a sudden change in the conductivity, and therefore a perturbation in any radio wave that may be propagating through that part of the atmosphere. Thus, the monitoring of the transmitter signals can be used to map out lightning induced atmospheric disturbances that are thousands of kilometers away. The investigators will also operate equipment that will monitor natural sources of radio waves, such as the sferics produced by lightning. Stanford University and the principal investigator are leaders in research on very low frequency radio waves and their interaction with the geospace environment.