Study of ionospheric D region changes during solar flares using MF radar measurements

doi:10.1016/j.asr.2020.10.015

NSSC OpenIR

	Study of ionospheric D region changes during solar flares using MF radar measurements
Alternative Title	20204609497568
	Quan, Lin 1; Cai, Bing 2,3; Hu, Xiong 2; Xu, Qingchen 2; Li, Ling 1
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).

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