globalchange  > 气候减缓与适应
DOI: 10.1002/grl.50827
论文题名:
Infrasonic crackle and supersonic jet noise from the eruption of Nabro Volcano, Eritrea
作者: Fee D.; Matoza R.S.; Gee K.L.; Neilsen T.B.; Ogden D.E.
刊名: Geophysical Research Letters
ISSN: 0094-8655
EISSN: 1944-8386
出版年: 2013
卷: 40, 期:16
起始页码: 4199
结束页码: 4203
语种: 英语
英文关键词: crackle ; infrasound ; Nabro ; supersonic ; volcanic jet
Scopus关键词: crackle ; Infrasound ; Nabro ; Source mechanisms ; supersonic ; Volcanic eruptions ; Volcanic hazards ; Waveform features ; Acoustic noise measurement ; Cracks ; Jet engines ; Models ; Rockets ; Volcanoes ; Supersonic aerodynamics ; crack ; infrasonics ; momentum ; parameterization ; volcanic eruption ; waveform analysis ; Ethiopia ; Nabro
英文摘要: The lowermost portion of an explosive volcanic eruption column is considered a momentum-driven jet. Understanding volcanic jets is critical for determining eruption column dynamics and mitigating volcanic hazards; however, volcanic jets are inherently difficult to observe due to their violence and opacity. Infrasound from the 2011 eruption of Nabro Volcano, Eritrea has waveform features highly similar to the "crackle" phenomenon uniquely produced by man-made supersonic jet engines and rockets and is characterized by repeated asymmetric compressions followed by weaker, gradual rarefactions. This infrasonic crackle indicates that infrasound source mechanisms in sustained volcanic eruptions are strikingly similar to jet noise sources from heated, supersonic jet engines and rockets, suggesting that volcanologists can utilize the modeling and physical understandings of man-made jets to understand volcanic jets. The unique, distinctive infrasonic crackle from Nabro highlights the use of infrasound to remotely detect and characterize hazardous eruptions and its potential to determine volcanic jet parameters. Key Points Nabro Volcano produced sound similar to supersonic jet engines and rockets Volcanic and man-made jets have similar sound source mechanisms Infrasound can remotely detect and characterize volcanic eruptions and jets. © 2013. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881644409&doi=10.1002%2fgrl.50827&partnerID=40&md5=ec49426adff16b44ec393bb0bb21be2a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5919
Appears in Collections:气候减缓与适应

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作者单位: Wilson Infrasound Observatories, Geophysical Institute, University of Alaska Fairbanks, 903 Koyukuk Drive, Fairbanks, AK 99775-7320, United States

Recommended Citation:
Fee D.,Matoza R.S.,Gee K.L.,et al. Infrasonic crackle and supersonic jet noise from the eruption of Nabro Volcano, Eritrea[J]. Geophysical Research Letters,2013-01-01,40(16).
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