Observation of Large-Scale Density Cavities and Parametric-Decay Instabilities in the High-Altitude Discrete Auroral Ionosphere under Pulsed Electromagnetic Radiation

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题名:	Observation of Large-Scale Density Cavities and Parametric-Decay Instabilities in the High-Altitude Discrete Auroral Ionosphere under Pulsed Electromagnetic Radiation
作者:	Wong,AY;Chen,J;Lee,LC;Liu,LY
贡献者:	太空科學研究所
关键词:	TERRESTRIAL KILOMETRIC RADIATION;EXCITATION;PLASMA;GENERATION;CYCLOTRON;WAVES;SCIENCE;BURSTS
日期:	2009
上传时间:	2010-06-29 18:37:55 (UTC+8)
出版者:	中央大學
摘要:	A large density cavity that measured 2000 km across and 500 km in height was observed by DEMETER and Formosat/COSMIC satellites in temporal and spatial relation to a new mode of propagation of electromagnetic (em) pulses between discrete magnetic field-aligned auroral plasmas to high altitudes. Recorded positive plasma potential from satellite probes is consistent with the expulsion of electrons in the creation of density cavities. High-frequency decay spectra support the concept of parametric instabilities fed by free energy sources.
關聯:	PHYSICAL REVIEW LETTERS
显示于类别:	[太空科學研究所 ] 期刊論文

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