Articles | Volume 39, issue 6
Ann. Geophys., 39, 975–989, 2021
https://doi.org/10.5194/angeo-39-975-2021
Ann. Geophys., 39, 975–989, 2021
https://doi.org/10.5194/angeo-39-975-2021
Regular paper
25 Nov 2021
Regular paper | 25 Nov 2021

Fine-scale dynamics of fragmented aurora-like emissions

Daniel K. Whiter et al.

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Latest update: 06 Jul 2022
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Short summary
This paper presents an analysis of high-resolution optical and radar observations of a phenomenon called fragmented aurora-like emissions (FAEs) observed close to aurora in the high Arctic. The observations suggest that FAEs are not caused by high-energy electrons or protons entering the atmosphere along Earth's magnetic field and are, therefore, not aurora. The speeds of the FAEs and their internal dynamics were measured and used to evaluate theories for how the FAEs are produced.