| DOI: | 10.1002/2015GL067445
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| 论文题名: | Multiparametric observation of volcanic lightning: Sakurajima Volcano, Japan |
| 作者: | Cimarelli C.; Alatorre-Ibargüengoitia M.A.; Aizawa K.; Yokoo A.; Díaz-Marina A.; Iguchi M.; Dingwell D.B.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9014
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| EISSN: | 1944-8745
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| 出版年: | 2016
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| 卷: | 43, 期:9 | | 起始页码: | 4221
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| 结束页码: | 4228
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| 语种: | 英语
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| 英文关键词: | ash electrification
; high-speed videos
; magnetotelluric
; Sakurajima
; volcanic lightning
; volcanic plume
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| Scopus关键词: | Electric utilities
; Electromagnetic fields
; High speed cameras
; Lightning
; Magnetotellurics
; High-speed video
; Magnetotelluric
; Sakurajima
; Volcanic lightning
; Volcanic plume
; Volcanoes
; convection
; electromagnetic field
; explosion
; geophysical array
; jet flow
; lightning
; magnetotelluric method
; multicriteria analysis
; observational method
; plume
; thrust
; videography
; volcanic ash
; volcanism
; Japan
; Kagoshima [Kyushu]
; Kyushu
; Sakurajima
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| 英文摘要: | 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. © 2016. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962448286&doi=10.1002%2f2015GL067445&partnerID=40&md5=99fac3cfd36e524490ba2044290089cc
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9977
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Earth and Environmental Sciences, Ludwig-Maximilians-Universität München, Munich, Germany
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| Recommended Citation: | |
Cimarelli C.,Alatorre-Ibargüengoitia M.A.,Aizawa K.,et al. Multiparametric observation of volcanic lightning: Sakurajima Volcano, Japan[J]. Geophysical Research Letters,2016-01-01,43(9).
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