Knowledge management system National Space Science Center,CAS
Study of ionospheric D region changes during solar flares using MF radar measurements | |
Alternative Title | 20204609497568 |
Quan, Lin1; Cai, Bing2,3; Hu, Xiong2; Xu, Qingchen2; Li, Ling1 | |
Source Publication | Advances in Space Research
![]() |
2020 | |
DOI | 10.1016/j.asr.2020.10.015 |
ISSN | 02731177 |
Language | 英语 |
Keyword | Electron density measurement - Electrons - Radar - Radar measurement Linear relationships - Lower ionosphere - Medium frequencies - Received power - Short waves - Strong absorptions - Variation characteristics - X ray radiation |
Abstract | During 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 By | EI |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.nssc.ac.cn/handle/122/7485 |
Collection | 中国科学院国家空间科学中心 |
Affiliation | 1.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). |
Files in This Item: | There are no files associated with this item. |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment