2003-2006年磁暴期间欧洲区域电离层三维层析及演变分析  

Analysis of Europe Ionospheric Responses During Magnetic Storms in 2003-2006 Using Ionospheric Tomographic Technology

作　　者：姚宜斌[1] 陈家君[1] 陈鹏[2] 孔建[1,3] 

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]西安科技大学测绘科学与技术学院,陕西西安710054 [3]Ohio State University School of Earth Science,Columbus,OH,USA

出　　处：《武汉大学学报（信息科学版）》2014年第2期132-136,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41174012,41274022);国家863计划资助项目(2013AA122502);国家教育部新世纪优秀人才支持计划资助项目(NCET-12-0428)~~

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。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.

关 键 词：磁暴 电离层 三维层析技术 电子密度中图法 

分 类 号：P228.41[天文地球—大地测量学与测量工程] P352.4[天文地球—测绘科学与技术]