地顶的地心距离及其变化

GEOPAUSE AND THE VARIATION OF ITS EARTH CENTER DISTANCE

本文介绍了有关磁层中电离层离子起主要作用区域 （ 地顶内区） 的观测资料和磁层中电离层离子随地磁活动和太阳活动变化的观测资料．

The observation data on the inner region of the geopause where the up-flowing ions are dominant and the variation of the up-flowing ions with geomagnetic activity and solar activity are introduced. The data show that the up-flowing ion density and flux, as well as the geopause are changing with the solar activity and geomagnetic activity.