Multiparametric observation of volcanic lightning: Sakurajima Volcano, Japan

C. Cimarelli, M. A. Alatorre-Ibargüengoitia, K. Aizawa, A. Yokoo, A. Díaz-Marina, M. Iguchi, D. B. Dingwell

研究成果: ジャーナルへの寄稿記事

19 引用 (Scopus)

抄録

We recorded volcanic lightning generated by Vulcanian explosions at Sakurajima Volcano using a synchronized multiparametric array. Physical properties of lightning are related to plume dynamics, and associated electromagnetic field variations are revealed by video observations (high speed and normal speed) together with infrasound and high sampling rate magnetotelluric signals. Data show that volcanic lightning at Sakurajima mainly occurs in the plume gas thrust region at a few hundred meters above the crater rim, where the overpressure of the turbulent volcanic jets determines the electrification of particles generating a complex charge structure in the growing plume. Organization of charges may be achieved at later stages when the plume transitions from the jet phase to the convective phase. Comparison with atmospheric sounding and maximum plume height data show that the effect of hydrometeors on flash generation at Sakurajima is negligible and can be more prudently considered as an additional factor contributing to the electrification of volcanic plumes.

元の言語英語
ページ(範囲)4221-4228
ページ数8
ジャーナルGeophysical Research Letters
43
発行部数9
DOI
出版物ステータス出版済み - 5 16 2016

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lightning
volcanoes
plumes
volcanology
Japan
volcano
plume
electrification
hydrometeors
atmospheric sounding
overpressure
electromagnetic field
rims
craters
thrust
crater
flash
explosions
explosion
electromagnetic fields

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

これを引用

Cimarelli, C., Alatorre-Ibargüengoitia, M. A., Aizawa, K., Yokoo, A., Díaz-Marina, A., Iguchi, M., & Dingwell, D. B. (2016). Multiparametric observation of volcanic lightning: Sakurajima Volcano, Japan. Geophysical Research Letters, 43(9), 4221-4228. https://doi.org/10.1002/2015GL067445

Multiparametric observation of volcanic lightning : Sakurajima Volcano, Japan. / Cimarelli, C.; Alatorre-Ibargüengoitia, M. A.; Aizawa, K.; Yokoo, A.; Díaz-Marina, A.; Iguchi, M.; Dingwell, D. B.

:: Geophysical Research Letters, 巻 43, 番号 9, 16.05.2016, p. 4221-4228.

研究成果: ジャーナルへの寄稿記事

Cimarelli, C, Alatorre-Ibargüengoitia, MA, Aizawa, K, Yokoo, A, Díaz-Marina, A, Iguchi, M & Dingwell, DB 2016, 'Multiparametric observation of volcanic lightning: Sakurajima Volcano, Japan', Geophysical Research Letters, 巻. 43, 番号 9, pp. 4221-4228. https://doi.org/10.1002/2015GL067445
Cimarelli C, Alatorre-Ibargüengoitia MA, Aizawa K, Yokoo A, Díaz-Marina A, Iguchi M その他. Multiparametric observation of volcanic lightning: Sakurajima Volcano, Japan. Geophysical Research Letters. 2016 5 16;43(9):4221-4228. https://doi.org/10.1002/2015GL067445
Cimarelli, C. ; Alatorre-Ibargüengoitia, M. A. ; Aizawa, K. ; Yokoo, A. ; Díaz-Marina, A. ; Iguchi, M. ; Dingwell, D. B. / Multiparametric observation of volcanic lightning : Sakurajima Volcano, Japan. :: Geophysical Research Letters. 2016 ; 巻 43, 番号 9. pp. 4221-4228.
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