skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Analysis of gas jetting and fumarole acoustics at Aso Volcano, Japan

Journal Article · · Journal of Volcanology and Geothermal Research
 [1];  [1];  [2];  [3];  [4]
  1. Univ. of Alaska, Fairbanks, AK (United States). Alaska Volcano Observatory. Wilson Alaska Technical Center. Geophysical Inst.
  2. Kyoto Univ., Minami-Aso (Japan). Aso Volcanological Lab. Inst. for Geothermal Sciences
  3. Univ. of California, Santa Barbara, CA (United States). Dept. of Earth Science. Earth Research Inst.
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The gas-thrust region of a large volcanic eruption column is predominately a momentum-driven, fluid flow process that perturbs the atmosphere and produces sound akin to noise from jet and rocket engines, termed “jet noise”. In this paper, we aim to enhance understanding of large-scale volcanic jets by studying an accessible, less hazardous fumarolic jet. We characterize the acoustic signature of ~ 2.5-meter wide vigorously jetting fumarole at Aso Volcano, Japan using a 5-element infrasound array located on the nearby crater. The fumarole opened on 13 July 2015 on the southwest flank of the partially collapsed pyroclastic cone within Aso Volcano's Naka-dake crater and had persistent gas jetting, which produced significant audible jet noise. The array was ~ 220 m from the fumarole and 57.6° from the vertical jet axis, a recording angle not typically feasible in volcanic environments. Array processing is performed to distinguish fumarolic jet noise from wind. Highly correlated periods are characterized by sustained, low-amplitude signal with a 7–10 Hz spectral peak. Finite difference time domain method numerical modeling suggests the influence of topography near the vent and along the propagation path significantly affects the spectral content, complicating comparisons with laboratory jet noise. The fumarolic jet has a low estimated Mach number (0.3 to 0.4) and measured temperature of ~ 260 °C. The Strouhal number for infrasound from volcanic jet flows and geysers is not known; thus we assume a peak Strouhal number of 0.19 based on pure-air laboratory jet experiments. This assumption leads to an estimated exit velocity of the fumarole of ~ 79 to 132 m/s. Finally, using published gas composition data from 2003 to 2009, the fumarolic vent area estimated from thermal infrared images, and estimated jet velocity, we estimate total volatile flux at ~ 160–270 kg/s (14,000–23,000 t/d).

Research Organization:
Univ. of Alaska, Fairbanks, AK (United States); Kyoto Univ., Minami-Aso (Japan); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE; Japan Society for the Promotion of Science (JSPS); National Science Foundation (NSF)
Grant/Contract Number:
AC52-07NA27344; EAPSI-1515624; NSF-EAR-1113294
OSTI ID:
1366922
Report Number(s):
LLNL-JRNL-729060
Journal Information:
Journal of Volcanology and Geothermal Research, Vol. 340; ISSN 0377-0273
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

References (37)

First volatile inventory for Gorely volcano, Kamchatka: VOLATILE INVENTORY FOR GORELY VOLCANO journal March 2012
An overview of volcano infrasound: From hawaiian to plinian, local to global journal January 2013
Infrasound from Tungurahua Volcano 2006–2008: Strombolian to Plinian eruptive activity journal June 2010
Infrasonic crackle and supersonic jet noise from the eruption of Nabro Volcano, Eritrea: INFRASONIC CRACKLE FROM NABRO journal August 2013
Introduction to an Open Community Infrasound Dataset from the Actively Erupting Sakurajima Volcano, Japan journal October 2014
Volcanic tremor and plume height hysteresis from Pavlof Volcano, Alaska journal January 2017
Fluxes of volatiles (H2O, CO2, N2, Cl, F) from arc volcanoes journal January 2008
Wideband acoustic records of explosive volcanic eruptions at Stromboli: New insights on the explosive process and the acoustic source: Goto et al.: Wideband acoustic records of Stromboli journal June 2014
Volcano infrasound: A review journal September 2011
Detecting geyser activity with infrasound journal April 2013
Repeated large-scale eruptions from a single compositionally stratified magma chamber: An example from Aso volcano, Southwest Japan journal November 2007
Mechanism of Phreatic Eruptions at Aso Volcano Inferred from Near-Field Broadband Seismic Observations journal August 1996
Local Volcano Infrasound and Source Localization Investigated by 3D Simulation journal October 2014
Acoustic multipole source model for volcanic explosions and inversion for source parameters journal December 2012
Acoustic source inversion to estimate volume flux from volcanic explosions: ACOUTIC SOURCE INVERSION journal July 2015
Influence of near-source volcano topography on the acoustic wavefield and implication for source modeling journal January 2013
Computationally robust and noise resistant numerical detector for the detection of atmospheric infrasound journal July 2013
Characterization and interpretation of volcanic activity at Karymsky Volcano, Kamchatka, Russia, using observations of infrasound, volcanic emissions, and thermal imagery: CHARACTERIZATION OF VOLCANIC ACTIVITY journal December 2013
Tracking near-surface atmospheric conditions using an infrasound network journal July 2010
Infrasonic jet noise from volcanic eruptions journal January 2009
Aeroacoustics of volcanic jets: Acoustic power estimation and jet velocity dependence: VOLCANIC JET AEROACOUSTICS journal December 2013
Network-Based Evaluation of the Infrasonic Source Location at Sakurajima Volcano, Japan journal October 2014
Reducing the bias of multitaper spectrum estimates: Reducing the bias of multitaper spectrum estimates journal October 2007
Three-dimensional volcano-acoustic source localization at Karymsky Volcano, Kamchatka, Russia journal August 2014
High-speed imaging, acoustic features, and aeroacoustic computations of jet noise from Strombolian (and Vulcanian) explosions: Jet noise from Strombolian explosions journal May 2014
Apparent migration of tremor source synchronized with the change in the tremor amplitude observed at Aso volcano, Japan journal June 2006
Supersonic Jet Noise journal January 1995
Jet Noise: Since 1952 journal January 1998
Sound generated by instability waves of supersonic flows. Part 2. Axisymmetric jets journal January 1984
Turbulent mixing noise from supersonic jets journal September 1994
The sources of jet noise: experimental evidence journal November 2008
Spectrum estimation and harmonic analysis journal January 1982
Aeroacoustics of hot jets journal January 1999
Scaling Laws and a Method for Identifying Components of Jet Noise journal October 2006
Mechanisms of Jet Noise Generation: Classical Theories and Recent Developments journal June 2009
Volatiles in subduction zone magmas: concentrations and fluxes based on melt inclusion and volcanic gas data journal January 2005
Application of video image processing to detect volcanic pressure waves: A case study on archived images of Aso Volcano, Japan: IMAGE PROCESSING OF VOLCANIC ERUPTION journal December 2004

Cited By (7)

Three‐Dimensional Acoustic Multipole Waveform Inversion at Yasur Volcano, Vanuatu journal August 2019
Infrasound from giant bubbles during explosive submarine eruptions journal October 2019
An experimental device for characterizing degassing processes and related elastic fingerprints: Analog volcano seismo-acoustic observations journal May 2018
The thermal signature of Aso Volcano during unrest episodes detected from space and ground-based measurements journal April 2018
Temporal variation in source location of continuous tremors before ash–gas emissions in January 2014 at Aso volcano, Japan journal August 2018
Monochromatic infrasound waves observed during the 2014–2015 eruption of Aso volcano, Japan journal January 2019
Unravelling the links between seismo-acoustic signals and eruptive parameters: Etna lava fountain case study journal November 2019

Similar Records

Origin, speciation, and fluxes of trace-element gases at Augustine volcano, Alaska: Insights into magma degassing and fumarolic processes
Journal Article · Sat Feb 01 00:00:00 EST 1992 · Geochimica et Cosmochimica Acta; (United States) · OSTI ID:1366922

Volcano infrasound: progress and future directions
Journal Article · Tue Apr 05 00:00:00 EDT 2022 · Bulletin of Volcanology · OSTI ID:1366922

Controls on the frequency content of near-source infrasound at open-vent volcanoes: a case study from Volcán Villarrica, Chile
Journal Article · Mon Nov 07 00:00:00 EST 2022 · Bulletin of Volcanology · OSTI ID:1366922

Related Subjects