2020年6月21日日环食电离层Es响应研究  

Study on the Es responses of annular solar eclipse on June 21 of 2020

作　　者：刘瑶 张鹦琪 胡艳莉[1] 张雅彬[1] 邓忠新[1] 徐彬[1] 徐朝辉 李江华 LIU Yao;ZHANG Yingqi;HU Yanli;ZHANG Yabin;DENG Zhongxin;XU Bin;XU Zhaohui;LI Jianghua(National Key Laboratory of Electromagnetic Environment,China Research Institute of Radiowave Propagation,Qingdao 266107,China;Qilu Institute of Technology,Jinan 250200,China;School of Electronic Information,Wuhan University,Wuhan 430079,China)

机构地区：[1]中国电波传播研究所电波环境特性及模化技术重点实验室,青岛266107 [2]齐鲁理工学院,济南250200 [3]武汉大学电子信息学院,武汉430079

出　　处：《电波科学学报》2022年第3期491-496,共6页Chinese Journal of Radio Science

基　　金：电波环境特性及模化技术重点实验室稳定支持经费(200701001,JCKY2019210C026)

摘　　要：为研究日环食期间电离层Es演化过程,利用VHF相干散射雷达和便携式垂测仪在2020年6月21日日环食期间开展联合观测试验,得到日环食期间h′Es和f_(o)Es均呈现出先降低再增强的变化形态.分析表明,该演化过程类似于快速日出日落对电离层Es的影响,其成因是日环食期间太阳活动作为辐射源经历了快速减弱、复原的一个过程.本次试验观测结果对研究和完善电离层Es形成机制、机理有重要意义.To study the evolution of irregularity of the ionosphere Es irregularities during the annular solar eclipse,we conducted a joint observation experiment using the VHF coherent scattering radar and a portable ionosonde system during the annular solar eclipse on 21 June,2020.The results show that the variation of h′Es and f_(o)Es reduces first and then increases during the annular solar eclipse,which is similar to the effect of rapid sunrise and sunset on the irregularities in the ionosphere Es irregularities.The reason is that the solar activity as the radiation source experiences a rapid weakening and recovery process during the annular solar eclipse.The observation results of this experiment are of great significance to improve the formation mechanism of Es irregularities.

关 键 词：电离层Es 日环食 f_(o)Es VHF相干散射雷达 电离层垂测仪 

分 类 号：P352[天文地球—空间物理学]