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DOI | 10.1029/2020GL088103 |
Spectral Broadening of NWC Transmitter Signals in the Ionosphere | |
Xia, Zhiyang1; Chen, Lunjin1; Zhima, Zeren2; Parrot, Michel3 | |
2020-05-30 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China; France |
英文摘要 | In this study, we use about 6.5 years of observation of Detection of Electromagnetic Emissions Transmitted from Earthquake Regions (DEMETER) satellite to study the spectral broadening of NWC ground transmitter signals and examine key parameters that control the width and intensity of the broadening power. First, we analyze a typical spectral broadening event, with enhanced wave intensity between lower hybrid resonance frequency and NWC signal frequency (19.8 kHz). The width and intensity of broadening power are positively proportional to the NWC wave amplitude. A following statistical analysis reveals a similar dependence on the NWC wave amplitude. The statistical analysis also indicates a significantly negative correlation of broadening spectral intensity and width with the background plasma density. The observations are consistent with existing theories predicting that lower plasma density drives a lower threshold for spectral broadening. |
英文关键词 | VLF transmitter plasma instability spectral broadening lower hybrid wave ionospheric disturbances DEMETER satellite |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551465400021 |
WOS关键词 | PROCESSING ONBOARD DEMETER ; SCIENTIFIC OBJECTIVES ; FIELD EXPERIMENT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/271629 |
专题 | 气候变化 |
作者单位 | 1.Univ Texas Dallas, Dept Phys, Richardson, TX 75083 USA; 2.China Earthquake Adm, Inst Crustal Dynam, Beijing, Peoples R China; 3.LPC2E CNRS, Orleans, France |
推荐引用方式 GB/T 7714 | Xia, Zhiyang,Chen, Lunjin,Zhima, Zeren,et al. Spectral Broadening of NWC Transmitter Signals in the Ionosphere[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(13). |
APA | Xia, Zhiyang,Chen, Lunjin,Zhima, Zeren,&Parrot, Michel.(2020).Spectral Broadening of NWC Transmitter Signals in the Ionosphere.GEOPHYSICAL RESEARCH LETTERS,47(13). |
MLA | Xia, Zhiyang,et al."Spectral Broadening of NWC Transmitter Signals in the Ionosphere".GEOPHYSICAL RESEARCH LETTERS 47.13(2020). |
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