摘要
电离层具有非常鲜明的日变化特性.电离层日变化特性是认识包括逐日变化等众多电离层现象的出发点,也是电离层经验模型需要呈现的最基本特性.本文简要介绍了有关电离层日变化的一些研究工作,重点关注以电场为核心的电离层日出变化、电离层午时咬失现象、电离层夜间增强,特别是以威德海异常为典型代表的中纬电离层夏季夜间异常变化.评述了这些方面相关研究进展、目前存在的争议、需要特别注意的地方及应进一步探讨的问题.
The most significant and fundamental feature of the ionospheric variations is the diurnal pattern of the ionosphere,which has very interesting and complicated phenomenon.In this brief review,we will introduce some works related with the ionospheric diurnal variations.Our topics includes the sunrise ionosphere with a focus on the enhancement of equatorial electric field around sunrise hours,the phenomenon of the daytime double peaks or noontime bite-out,and the nighttime enhancements in electron density,especially the summer mid-latitude nighttime anomalies represented by the Weddell Sea anomaly.We further discuss some points which are still under debate and remain elusive.
作者
刘立波
陈一定
张瑞龙
乐会军
张辉
Liu Libo;Chen Yiding;Zhang Ruilong;Le Huijun;Zhang Hui(Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Mohe Observatory of Geophysics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;College of Earth and Planetary Sciences,University of the Chinese Academy of Sciences,Beijing 100049,China)
出处
《地球与行星物理论评》
2021年第6期647-661,共15页
Reviews of Geophysics and Planetary Physics
基金
国家自然科学基金资助项目(42030202,41774161)。
关键词
电离层
日变化
夜间增强
中纬夏季夜间异常
ionosphere
diurnal variation
nighttime enhancement
midlatitude summer nighttime anomaly
