Articles | Volume 40, issue 4
https://doi.org/10.5194/angeo-40-475-2022
https://doi.org/10.5194/angeo-40-475-2022
Regular paper
 | 
12 Jul 2022
Regular paper |  | 12 Jul 2022

Reconstruction of precipitating electrons and three-dimensional structure of a pulsating auroral patch from monochromatic auroral images obtained from multiple observation points

Mizuki Fukizawa, Takeshi Sakanoi, Yoshimasa Tanaka, Yasunobu Ogawa, Keisuke Hosokawa, Björn Gustavsson, Kirsti Kauristie, Alexander Kozlovsky, Tero Raita, Urban Brändström, and Tima Sergienko

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Three-dimensional ionospheric conductivity associated with pulsating auroral patches: reconstruction from ground-based optical observations
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Subject: Earth's ionosphere & aeronomy | Keywords: Auroral ionosphere
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Revised manuscript accepted for ANGEO
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Cited articles

Aso, T., Hashimoto, T., Abe, M., Ono, T., and Ejiri, M.: On the analysis of aurora stereo observations, J. Geomagn. Geoelectr., 42, 579–595, https://doi.org/10.5636/jgg.42.579, 1990. 
Aso, T., Ejiri, M., Miyaoka, H., Hashimoto, T., Abu, T. Y., and Abe, M.: Aurora stereo observation in Iceland, Proc. NIPR Symp. Up. Atmos. Phys., 6, 1–14, 1993. 
Aso, T., Ejiri, M., Urashima, A., Miyaoka, H., Steen, Å., Brändstrom, U., and Gustavsson, B.: First results of auroral tomography from ALIS-Japan multi-station observations in March, 1995, Earth Planet. Space, 50, 81–86, https://doi.org/10.1186/BF03352088, 1998. 
Brown, N. B., Davis, T. N., Hallinan, T. J., and Stenbaek-Nielsen, H. C.: Altitude of pulsating aurora determined by a new instrumental thechnique, Geophys. Res. Lett., 3, 403–404, https://doi.org/10.1029/GL003i007p00403, 1976. 
Davis, T. N.: Observed characteristics of auroral forms, Space Sci. Rev., 22, 77–113, https://doi.org/10.1007/BF00215814, 1978. 
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Short summary
The pulsating auroral generation mechanism has been investigated by observing precipitating electrons using rockets or satellites. However, it is difficult for such observations to distinguish temporal changes from spatial ones. In this study, we reconstructed the horizontal 2-D distribution of precipitating electrons using only auroral images. The 3-D aurora structure was also reconstructed. We found that there were both spatial and temporal changes in the precipitating electron energy.