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dc.contributor.authorKataoka, Ryuhoja
dc.contributor.authorFukuda, Yokoja
dc.contributor.authorMiyoshi, Yoshizumija
dc.contributor.authorMiyahara, Hirokoja
dc.contributor.authorItoya, Satoruja
dc.contributor.authorEbihara, Yusukeja
dc.contributor.authorHampton, Donaldja
dc.contributor.authorDahlgren, Hannaja
dc.contributor.authorWhiter, Danielja
dc.contributor.authorIvchenko, Nickolayja
dc.contributor.alternative海老原, 祐輔ja
dc.description.abstractAuroral 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.ja
dc.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.ja
dc.subjectMagnetosphere-ionosphere couplingja
dc.subjectWave-particle interactionja
dc.titleCompound auroral micromorphology: Ground-based high-speed imagingja
dc.type.niitypeJournal Articleja
dc.identifier.jtitleEarth, Planets and Spaceja
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