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Small-Scale Dynamic Aurora
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DOI：10.1007/s11214-021-00796-w.png)
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Abstract
En 中文
Small-scale dynamic auroras have spatial scales of a few km or less, and temporal scales of a few seconds or less, which visualize the complex interplay among charged particles, Alfven waves, and plasma instabilities working in the magnetosphere-ionosphere coupled regions. We summarize the observed properties of flickering auroras, vortex motions, and filamentary structures. We also summarize the development of fundamental theories, such as dispersive Alfven waves (DAWs), plasma instabilities in the auroral acceleration region, ionospheric feedback instabilities (IFI), and the ionospheric Alfven resonator (IAR).
Keywords:
Magnetosphere-ionosphere coupled region
Auroral phenomena
Auroral breakup
Flickering aurora
Dispersive Alfven waves
Ionospheric feedback instabilities
Ionospheric Alfven resonator
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