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First results of auroral tomography from ALIS-Japan multi-station observations in March, 1995

Earth, Planets and Space volume 50, pages81–86(1998)Cite this article

Abstract

Auroral tomography observations have been carried out in March, 1995, as a joint international campaign between Sweden and Japan. Three unmanned Swedish ALIS stations (Kiruna, Merasjärvi, Tjautjas) and two Japanese JICCD sites (Abisko, Nikkaluokta), geographically separated by about 50 km at higher latitudes, were operated to capture multi-station monochromatic tomography images at 557.7 nm wavelength using CCD cameras. All cameras were pointing to one of the predetermined directions to secure a common field of view. Several images of auroral arcs, mostly for the core region right above Kiruna, have synchronously been taken by the multi-station imaging system. Tomographic inversion analysis for four-point images was carried out using the algebraic reconstruction technique. Reconstructions of a curved arc and of a double arc system suggest promising application of this technique to the retrieval of three-dimensional auroral luminosity.

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Affiliations

  1. National Institute of Polar Research, Itabashi, Tokyo, 173, Japan

    Takehiko Aso, Masaki Ejiri & Hiroshi Miyaoka

  2. Department of Electrical Engineering, Kyoto University, Kyoto, 606-01, Japan

    Akira Urashima

  3. Swedish Institute of Space Physics, P.O. Box 812, S-981 28, Kiruna, Sweden

    Åke Steen, Urban Brändström & Björn Gustavsson

Authors
  1. Takehiko Aso
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  2. Masaki Ejiri
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  3. Akira Urashima
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  4. Hiroshi Miyaoka
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  5. Åke Steen
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  6. Urban Brändström
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  7. Björn Gustavsson
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Correspondence to Takehiko Aso.

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Aso, T., Ejiri, M., Urashima, A. et al. First results of auroral tomography from ALIS-Japan multi-station observations in March, 1995. Earth Planet Sp 50, 81–86 (1998). https://doi.org/10.1186/BF03352088

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Keywords

  • Tomographic Reconstruction
  • Epipolar Line
  • Luminous Region
  • Auroral Tomography
  • Auroral Luminosity