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).

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Description/Abstract

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

Item Type: Article
Digital Object Identifier (DOI): doi:10.1186/s40623-015-0190-6
ISSNs: 1343-8832 (print)
Subjects: Q Science > QC Physics
Organisations: Astronomy Group
ePrint ID: 378841
Date :
Date Event
16 January 2015Accepted/In Press
15 February 2015Published
Date Deposited: 17 Jul 2015 12:13
Last Modified: 17 Apr 2017 05:48
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/378841

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