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Compound auroral micromorphology: ground-based high-speed imaging

Kataoka, Ryuho, Fukuda, Yoko, Miyoshi, Yoshizumi, Miyahara, Hiroko, Itoya, Satoru, Ebihara, Yusuke, Hampton, Donald, Dahlgren, Hanna, Whiter, Daniel and Ivchenko, Nickolay (2015) Compound auroral micromorphology: ground-based high-speed imaging Earth Planets and Space, 67, (1), pp. 1-9. (doi:10.1186/s40623-015-0190-6).

Record type: Article


Auroral microphysics still remains partly unexplored. Cutting-edge ground-based optical observations using scientific complementary metal-oxide semiconductor (sCMOS) cameras recently enabled us to observe the fine-scale morphology of bright aurora at magnetic zenith for a variety of rapidly varying features for long uninterrupted periods. We report two interesting examples of combinations of fine-scale rapidly varying auroral features as observed by the sCMOS cameras installed at Poker Flat Research Range (PFRR), Alaska, in February 2014. The first example shows that flickering rays and pulsating modulation simultaneously appeared at the middle of a surge in the pre-midnight sector. The second example shows localized flickering aurora associated with growing eddies at the poleward edge of an arc in the midnight sector

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Accepted/In Press date: 16 January 2015
Published date: 15 February 2015
Organisations: Astronomy Group


Local EPrints ID: 378841
ISSN: 1343-8832
PURE UUID: 14338033-5043-4d83-8e37-bf0d69e59a1f
ORCID for Daniel Whiter: ORCID iD

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Date deposited: 17 Jul 2015 12:13
Last modified: 17 Jul 2017 20:48

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Author: Ryuho Kataoka
Author: Yoko Fukuda
Author: Yoshizumi Miyoshi
Author: Hiroko Miyahara
Author: Satoru Itoya
Author: Yusuke Ebihara
Author: Donald Hampton
Author: Hanna Dahlgren
Author: Daniel Whiter ORCID iD
Author: Nickolay Ivchenko

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