Whistlers Generated by Gigantic Jets: Modeling and Observations

淡江大學機構典藏 > 工學院 > 航空太空工程學系暨研究所 > 會議論文 > Item 987654321/107452

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题名:	Whistlers Generated by Gigantic Jets: Modeling and Observations
其它题名:	巨大噴流產生的哨聲波: 模式及觀測
作者:	Wang;K;Chang, S. C.;Huang, S. M.;Hsu, R. R.;Berthelier, J. J.;Onishi, T.
日期:	2016-05-16
上传时间:	2016-08-18 13:41:25 (UTC+8)
摘要:	The characteristics of whistlers generated from a gigantic jet (GJ) are modeled as well as to examine satellite observations. Modeling is based on disturbances in the electric field, as measured by NCKU ELF/VLF station, associated with a representative tree-like GJ event over typhoon Lionrock. The calculated frequency-time spectrogram shows two sequent whistlers, with the later one emitted mainly below a few kHz. Our results show that the waves are subject to greater attenuation as the frequency increases; however, a reversal occurs at lower frequencies of a few hundred Hz due to ion effects. The electric fields observed by DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions) satellite mission are then investigated based on the locations of tree-like GJ events observed by ISUAL (Imager of Sprites and Upper Atmospheric Lightning). Paired whistlers, detected right after the tree-like GJ event occurred closest to the satellite location among all examined events, with power distribution features on the frequency-time spectrogram resembling modeled two sequent whistlers, are found.
關聯:	2016年臺灣地球科學聯合學術研討會論文集
显示于类别:	[航空太空工程學系暨研究所] 會議論文

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