Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9619
AuthorsTaddeucci, J.* 
Sesterhenn, J.* 
Scarlato, P.* 
Stampka, K.* 
Del Bello, E.* 
Pena Fernandez, J. J.* 
TitleHigh-speed imaging, acoustic features, and aeroacoustic computations of jet noise from Strombolian (and Vulcanian) explosions
Issue Date16-May-2014
Series/Report no./41 (2014)
DOI10.1002/2014GL059925
URIhttp://hdl.handle.net/2122/9619
Keywordsjet noise
volcano acoustics
Stromboli
Yasur
Fuego
strombolian eruption
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous 
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 
04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques 
05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions 
AbstractHigh-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.
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