地磁活动常常会引起电离层的扰动，作为一种常见的空间天气现象，它会严重干扰短波通信，还会引起卫星信号发生突变，导致不可预知的方位误差，因此对其特征的研究将变的尤为重要。由于观测手段和历史资料的限制，早期主要以定性的理论研究为主，而定量上的研究还很欠缺。因此，本项目基于一种新型指数定量研究电离层扰动与地磁活动的时空关系。首先，利用空间分析方法研究在不同类型地磁活动条件下，指数所反映出的扰动的位置变化、分布类型、以及空间尺度，并试图建立它们的最佳参数组合在空间上的一种定量关系。然后，利用新型指数的全球分布特性计算它与地磁活动指数之间的空间相关系数，并根据分布特征研究其物理机制。最后，分析在不同时间尺度条件下空间相关系数的变化特征，并深入研究其中具有显著变化特征的时间尺度，分析电离层扰动在该条件下可能的控制因素。这些定量结果将会加深对电离层扰动与地磁活动时空关系的理解，约束和验证现有的理论模型。

Geomagnetic activity usually cause Ionospheric disturbance, as a common space weather phenomenon, which often interfere with short wave communication seriously, would also cause the satellite signal mutation, which finally lead to unpredictable azimuth error. So understanding of evolution law and characteristics of ionospheric disturbance is of great significance to research into space weather. Due to the limitation of observation techniques and historical data, early research is main focus on theoretical and qualitative study, but few in quantitative research. So this project intends to base on a kind of new index to quantitatively study the time-space relationship between ionosphere disturbance and geomagnetic activity. First, by using the space analysis method under the condition of different type of geomagnetic activity, to study its change of position, distribution pattern, and spatial scales. Try to establish a quantitative relationship of their optimal parameter combination in time and space. Then, due to the global distribution characteristics of the index, the spatial-correlation coefficients can be obtained by calculating the relationship between the index and geomagnetic activity index, and according to its distribution characteristics to study the physical mechanism. Finally, analyze the variation of spatial-correlation coefficients under the condition of different time scales. After that, further study the time scale with significant change, and study its possible control factors under the condition. These quantitative results will deepen the understanding of the relationship between ionospheric disturbance and geomagnetic activity, and constraint and validate the existing theoretical model.