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Title: Compound auroral micromorphology: Ground-based high-speed imaging
Authors: Kataoka, Ryuho
Fukuda, Yoko
Miyoshi, Yoshizumi
Miyahara, Hiroko
Itoya, Satoru
Ebihara, Yusuke  kyouindb  KAKEN_id
Hampton, Donald
Dahlgren, Hanna
Whiter, Daniel
Ivchenko, Nickolay
Author's alias: 海老原, 祐輔
Keywords: Aurora
Magnetosphere-ionosphere coupling
Wave-particle interaction
Issue Date: 15-Feb-2015
Publisher: SpringerOpen
Journal title: Earth, Planets and Space
Volume: 67
Thesis number: 23
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.
Rights: © Kataoka et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://​creativecommons.​org/​licenses/​by/​4.​0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
DOI(Published Version): 10.1186/s40623-015-0190-6
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