Balloon-Borne Studies of the Ionosphere and Magnetosphere Above Antarctica

这个项目有两个任务。一是继续对过去在南极飞行的电场和X射线仪器获得的数据进行分析。二是为日本人从南极西奥瓦站放飞的长时间气球提供电场测量仪器，并对结果数据进行分析。这些极地巡逻气球(PPB)预计将绕南极飞行几次，飞行时间约为一个月。在飞行过程中，它们将覆盖从高极帽到中纬度离子槽的地磁纬度。研究的主要焦点将是超低频(ULF)波。提出者将对电场和磁场强度之比作为频率、地磁活动、磁当地时和磁纬度的函数进行统计研究。这些研究将提供关于太阳周期中不同时间的地电活动变化的数据。在早些时候的行动中，包括PACE雷达在内的几个地面仪器进行了同步协调测量，这也将在日本极地巡逻气球飞行期间进行。

This project has two tasks. The first is to continue the analysis of data obtained from electric field and x-ray instruments flown in Antarctica in the past. The second is to provide electric field measuring instruments for long duration balloons to be flown by the Japanese from Syowa Station, Antarctica, and to analyze the resulting data. These Polar Patrol Balloons (PPB) are expected to circumnavigate the south pole several times and to have flight times of approximately one month. They will, in the course of their flights, cover geomagnetic latitudes ranging from the high polar cap to the mid-latitude ion trough. The main focus of the research will be on ultra-low frequency (ULF) waves. The proposers will perform a statistical study of the ratio of electrical to magnetic field strength as a function of frequency, geomagnetic activity, magnetic local time and magnetic latitude. These studies will provide data on the variation of geoelectric activity at different times in the solar cycle. Simultaneous coordinated measurements were made during the earlier campaign by several ground based instruments including the PACE radar, and this will also be done during the Japanese Polar Patrol Balloon flights.