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DOI码：10.1038/s41598-025-14293-5
发表刊物：Scientific Reports
关键字：Solar extreme ultraviolet radiations, Ground-based VLF transmitter waves, The propagation and attenuation of VLF waves, Collisional damping of ionospheric plasma
摘要：Ground-based very low frequency (VLF) transmitter waves (3 – 30 kHz) can cause the precipitation loss of high-energy electrons in Earth's radiation belts. Although the propagation and attenuation of artificial VLF waves have been studied for more than half a century, it is not clear whether solar extreme ultraviolet (EUV) radiations can modify the VLF wave intensity in inner radiation belt and slot region (L ~ 1.1 – 3RE). Here, by analyzing satellite observations and quantitative calculations, we find that the enhanced solar EUV radiations cause global attenuation of the artificial VLF waves radiated from low-latitude transmitters (λ < 44.2° or L < 1.8 RE), whereas those waves radiated from middle-latitude transmitters (λ > 44.2° or L > 1.8 RE) weaken slightly around noon. Under high solar EUV radiations, the large attenuation of artificial VLF waves in the low L region is due to enhanced collisional damping of ionospheric plasmas at low latitudes.
第一作者：K. X. Cheng
论文类型：期刊论文
通讯作者：L. Y. Li
卷号：15
期号：29706
是否译文：否
发表时间：2025-08-13
收录刊物：SCI
发布期刊链接：https://doi.org/10.1038/s41598-025-14293-5