A possible generation mechanism of temporal and spatial structures of flickering aurora
作者： K. Sakanoi
DOI: 10.1029/2004JA010549
关键词: Physics 、 Electron flux 、 Astrophysics 、 Cyclotron 、 Flicker 、 Interference wave 、 Photometer 、 Geophysics 、 Ion 、 Resonance 、 Acceleration 、 Earth-Surface Processes 、 Ecology (disciplines) 、 Earth and Planetary Sciences (miscellaneous) 、 Space and Planetary Science 、 Palaeontology 、 Forestry 、 Aquatic science 、 Atmospheric Science 、 Soil science 、 Geochemistry and Petrology 、 Oceanography 、 Water Science and Technology
摘要: [1] Optical observations of flickering aurora by a high-speed imaging photometer system were carried out at Syowa Station in 1998. A comparison between observed parameters and theoretical values dispersive Alfven waves indicates that would be produced electron flux modulations electromagnetic ion cyclotron or inertial the auroral acceleration region located over altitude range ∼2000–5000 km. Interference wave patterns two resonance cone can explain temporal spatial structures aurora; columns (or spots) remain almost same location during their lifetime shapes become indistinguishable every half period timing interchange bright dark spots).
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