| DOI: | 10.1002/2014GL059925
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| 论文题名: | High-speed imaging, acoustic features, and aeroacoustic computations of jet noise from Strombolian (and Vulcanian) explosions |
| 作者: | Taddeucci J.; Sesterhenn J.; Scarlato P.; Stampka K.; Del Bello E.; Pena Fernandez J.J.; Gaudin D.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10109
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| EISSN: | 1944-9840
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| 出版年: | 2014
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| 卷: | 41, 期:9 | | 起始页码: | 3096
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| 结束页码: | 3102
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| 语种: | 英语
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| 英文关键词: | Fuego
; jet noise
; Stromboli
; Strombolian eruption
; volcano acoustics
; Yasur
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| Scopus关键词: | Acoustic fields
; Acoustic noise
; Acoustic noise measurement
; Computer simulation
; Explosions
; Numerical models
; Volcanoes
; Fuego
; Jet noise
; Stromboli
; Strombolian eruption
; Yasur
; Supersonic aerodynamics
; acoustic data
; acoustic method
; computer simulation
; explosive volcanism
; jet
; sonic boom
; visualization
; Fuego Volcano
; Guatemala [Central America]
; Italy
; Lipari Islands
; Messina [Sicily]
; Sicily
; Stromboli
; Tanna
; Vanuatu
; Yasur Volcano
; Plinia
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| 英文摘要: | High-speed imaging of explosive eruptions at Stromboli (Italy), Fuego (Guatemala), and Yasur (Vanuatu) volcanoes allowed visualization of pressure waves from seconds-long explosions. From the explosion jets, waves radiate with variable geometry, timing, and apparent direction and velocity. Both the explosion jets and their wave fields are replicated well by numerical simulations of supersonic jets impulsively released from a pressurized vessel. The scaled acoustic signal from one explosion at Stromboli displays a frequency pattern with an excellent match to those from the simulated jets. We conclude that both the observed waves and the audible sound from the explosions are jet noise, i.e., the typical acoustic field radiating from high-velocity jets. Volcanic jet noise was previously quantified only in the infrasonic emissions from large, sub-Plinian to Plinian eruptions. Our combined approach allows us to define the spatial and temporal evolution of audible jet noise from supersonic jets in small-scale volcanic eruptions. Key Points We use high-speed imaging to visualize acoustic waves from volcanic explosions Waves radiate at sonic-supersonic speed with complex patterns from explosion jet Numerical simulations and acoustic data support jet noise origin of the waves © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901953512&doi=10.1002%2f2014GL059925&partnerID=40&md5=4818b746d195ec36381ea18eabf1e1d5
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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/7373
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| Appears in Collections: | 气候减缓与适应
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作者单位: | HTHP Lab, Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
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| Recommended Citation: | |
Taddeucci J.,Sesterhenn J.,Scarlato P.,et al. High-speed imaging, acoustic features, and aeroacoustic computations of jet noise from Strombolian (and Vulcanian) explosions[J]. Geophysical Research Letters,2014-01-01,41(9).
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