Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points

Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points

Temporal and spatial evolution of two high-altitude plasma bubbles (evening and midnight) was observed on 4 April 2002, at geomagnetic conjugate points at Sata, Japan (magnetic latitude 24° N), and Darwin, Australia (magnetic latitude 22° S), using two 630-nm airglow imagers. The...

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Main Authors: K. Shiokawa, Y. Otsuka, T. Ogawa, P. Wilkinson
Format: Article
Language:English
Published: Copernicus Publications 2004-09-01
Series:Annales Geophysicae
Online Access:https://www.ann-geophys.net/22/3137/2004/angeo-22-3137-2004.pdf
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spelling doaj-e1e5101a6db7420480dd42bf5c9a598e2020-11-24T22:57:21ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762004-09-01223137314310.5194/angeo-22-3137-2004Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate pointsK. Shiokawa0Y. Otsuka1T. Ogawa2P. Wilkinson3Solar-Terrestrial Environment Laboratory, Nagoya University, Toyokawa 442-8507, JapanSolar-Terrestrial Environment Laboratory, Nagoya University, Toyokawa 442-8507, JapanSolar-Terrestrial Environment Laboratory, Nagoya University, Toyokawa 442-8507, JapanIPS Radio and Space Services, Haymarket, New South Wales 1240, AustraliaTemporal and spatial evolution of two high-altitude plasma bubbles (evening and midnight) was observed on 4 April 2002, at geomagnetic conjugate points at Sata, Japan (magnetic latitude 24° N), and Darwin, Australia (magnetic latitude 22° S), using two 630-nm airglow imagers. The apex height of the bubbles reached ~1500km. The upward velocity of the evolution was faster in the evening (~170m/s at 20:00-21:00 LT) than around midnight (~28m/s at 23:00-00:00 LT). Bifurcating features of the bubbles into a smaller scale size of ~50km were clearly seen for both the evening and midnight bubbles, showing fairly good conjugacy between the Northern and Southern Hemispheres.https://www.ann-geophys.net/22/3137/2004/angeo-22-3137-2004.pdf
collection DOAJ
language English
format Article
sources DOAJ
author K. Shiokawa
Y. Otsuka
T. Ogawa
P. Wilkinson
spellingShingle K. Shiokawa
Y. Otsuka
T. Ogawa
P. Wilkinson
Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points
Annales Geophysicae
author_facet K. Shiokawa
Y. Otsuka
T. Ogawa
P. Wilkinson
author_sort K. Shiokawa
title Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points
title_short Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points
title_full Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points
title_fullStr Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points
title_full_unstemmed Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points
title_sort time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points
publisher Copernicus Publications
series Annales Geophysicae
issn 0992-7689
1432-0576
publishDate 2004-09-01
description Temporal and spatial evolution of two high-altitude plasma bubbles (evening and midnight) was observed on 4 April 2002, at geomagnetic conjugate points at Sata, Japan (magnetic latitude 24° N), and Darwin, Australia (magnetic latitude 22° S), using two 630-nm airglow imagers. The apex height of the bubbles reached ~1500km. The upward velocity of the evolution was faster in the evening (~170m/s at 20:00-21:00 LT) than around midnight (~28m/s at 23:00-00:00 LT). Bifurcating features of the bubbles into a smaller scale size of ~50km were clearly seen for both the evening and midnight bubbles, showing fairly good conjugacy between the Northern and Southern Hemispheres.
url https://www.ann-geophys.net/22/3137/2004/angeo-22-3137-2004.pdf
work_keys_str_mv AT kshiokawa timeevolutionofhighaltitudeplasmabubblesimagedatgeomagneticconjugatepoints
AT yotsuka timeevolutionofhighaltitudeplasmabubblesimagedatgeomagneticconjugatepoints
AT togawa timeevolutionofhighaltitudeplasmabubblesimagedatgeomagneticconjugatepoints
AT pwilkinson timeevolutionofhighaltitudeplasmabubblesimagedatgeomagneticconjugatepoints
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