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High-speed stereosc...
High-speed stereoscopy of aurora
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Kataoka, R. (author)
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Fukuda, Y. (author)
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Uchida, H. A. (author)
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Yamada, H. (author)
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Miyoshi, Y. (author)
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Ebihara, Y. (author)
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- Dahlgren, Hanna (author)
- KTH,Rymd- och plasmafysik
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Hampton, D. (author)
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(creator_code:org_t)
- 2016-01-18
- 2016
- English.
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In: Annales Geophysicae. - : Copernicus GmbH. - 0992-7689 .- 1432-0576. ; 34:1, s. 41-44
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http://www.ann-geoph...
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https://www.ann-geop...
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https://urn.kb.se/re...
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https://doi.org/10.5...
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Abstract
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- We performed 100aEuro-fps stereoscopic imaging of aurora for the first time. Two identical sCMOS cameras equipped with narrow field-of-view lenses (15A degrees by 15A degrees) were directed at magnetic zenith with the north-south base distance of 8.1aEuro-km. Here we show the best example that a rapidly pulsating diffuse patch and a streaming discrete arc were observed at the same time with different parallaxes, and the emission altitudes were estimated as 85-95aEuro-km and > aEuro-100aEuro-km, respectively. The estimated emission altitudes are consistent with those estimated in previous studies, and it is suggested that high-speed stereoscopy is useful to directly measure the emission altitudes of various types of rapidly varying aurora. It is also found that variation of emission altitude is gradual (e.g., 10aEuro-km increase over 5aEuro-s) for pulsating patches and is fast (e.g., 10aEuro-km increase within 0.5aEuro-s) for streaming arcs.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Ionosphere
- auroral ionosphere
Publication and Content Type
- ref (subject category)
- art (subject category)
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