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Study of ionospheric D region changes during solar flares using MF radar measurements
Alternative Title20204609497568
Quan, Lin1; Cai, Bing2,3; Hu, Xiong2; Xu, Qingchen2; Li, Ling1
Source PublicationAdvances in Space Research
2020
DOI10.1016/j.asr.2020.10.015
ISSN02731177
Language英语
KeywordElectron density measurement - Electrons - Radar - Radar measurement Linear relationships - Lower ionosphere - Medium frequencies - Received power - Short waves - Strong absorptions - Variation characteristics - X ray radiation
AbstractDuring solar flares, the X-ray radiation suddenly increases, resulting in an increase in the electron density of the atmospheric D region and a strong absorption of short-wave radio waves. Based on Langfang medium frequency (MF) radar, this paper analyzed the variation characteristics of D region in the lower ionosphere from 62 km to 82 km. The analysis focused on multiple C-level and M-level solar flare events before and after the large-scale flare event at 11:53 (UT) on September 6, 2017. The results show that it is difficult to detect the electron density over 70 km in Langfang during solar flares, but the electron density value can be obtained as low as 62 km, and the stronger the flare intensity, the lower the detectable electron density height. Besides, the equal electron density height, the received power of X and O waves will also be significantly reduced during the flares, and the reduction of equal electron density height has a weak linear relationship with flare intensity. © 2020 COSPAR
Indexed ByEI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7485
Collection中国科学院国家空间科学中心
Affiliation1.Beijing Institute of Tracking and Telecommunications Technology, Beijing; 100094, China;
2.National Space Science Center, Chinese Academy of Sciences, Beijing; 100190, China;
3.University of Chinese Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Quan, Lin,Cai, Bing,Hu, Xiong,et al. Study of ionospheric D region changes during solar flares using MF radar measurements[J]. Advances in Space Research,2020.
APA Quan, Lin,Cai, Bing,Hu, Xiong,Xu, Qingchen,&Li, Ling.(2020).Study of ionospheric D region changes during solar flares using MF radar measurements.Advances in Space Research.
MLA Quan, Lin,et al."Study of ionospheric D region changes during solar flares using MF radar measurements".Advances in Space Research (2020).
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