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中文摘要：
基于IGS跟踪站的GNSS观测资料，利用电离层三维层析技术，对2003～2006年间3次不同类型强磁暴期间欧洲区域上空电离层电子密度的三维时空分布进行了反演，反演结果精细地反映了电离层电子密度的三维结构。通过对电离层扰动演变过程的分析，表明电离层扰动情况与磁暴发展过程一致，同时发现磁暴引起的电离层扰动具有显著的纬度效应。另外，随着磁暴的发展，电子密度极大值所在高度也会发生变化。研究分析表明，电离层电子密度三维重构图像可以直观清晰地反映各经度面、纬度面和高度面上电子密度的分布和演变情况，能有效地辅助分析电离层在磁暴发生期间的扰动情况。
英文摘要：
Based on GNSS observations from the IGS, this paper reconstructed the 3D spatial and temporal distribution of ionospheric electron density over Europe during three strong magnetic storms in 2003-2006, using computerized ionospheric tomographic technology （CIT）. The reconstructed images present the 3D structure of ionospheric electron density. By analyzing the evolutionary process of ion- ospheric disturbances, the paper shows that ionospheric responses are coincident with the development of magnetic storms~ and further that such disturbances have a remarkable latitudinal effect. Addition- ally, the altitudes where electron densities are the maximum also changed during the magnetic storms. The research and analyses in this paper illustrate that CIT can reflect the distribution and involvement of electron densities in each longitude, latitude, and altitude lane. CIT is shown to be useful for im- proved analyses of ionospheric disturbances during magnetic storms.
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