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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6062
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dc.contributor.authorallMatoza, R. S.; Laboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of Californiaen
dc.contributor.authorallGarcés, M. A.; Infrasound Laboratory, Hawai’i Institute of Geophysics andPlanetology, University of Hawai’i at Manoaen
dc.contributor.authorallChouet, B. A.; U.S. Geological Survey, Menlo Park, Californiaen
dc.contributor.authorallD'Auria, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.authorallHedlin, M. A. H.; Laboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of Californiaen
dc.contributor.authorallDe Groot-Hedlin, E.; Laboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of Californiaen
dc.contributor.authorallWaite, G. P.; U.S. Geological Survey, Menlo Park, Californiaen
dc.date.accessioned2010-06-30T07:39:49Zen
dc.date.available2010-06-30T07:39:49Zen
dc.date.issued2009en
dc.identifier.urihttp://hdl.handle.net/2122/6062en
dc.description.abstractDuring the early stages of the 2004–2008 Mount St. Helens eruption, the source process that produced a sustained sequence of repetitive long-period (LP) seismic events also produced impulsive broadband infrasonic signals in the atmosphere. To assess whether the signals could be generated simply by seismic-acoustic coupling from the shallow LP events, we perform finite difference simulation of the seismo-acoustic wavefield using a single numerical scheme for the elastic ground and atmosphere. The effects of topography, velocity structure, wind, and source configuration are considered. The simulations show that a shallow source buried in a homogeneous elastic solid produces a complex wave train in the atmosphere consisting of P/SV and Rayleigh wave energy converted locally along the propagation path, and acoustic energy originating from the source epicenter. Although the horizontal acoustic velocity of the latter is consistent with our data, the modeled amplitude ratios of pressure to vertical seismic velocity are too low in comparison with observations, and the characteristic differences in seismic and acoustic waveforms and spectra cannot be reproduced from a common point source. The observations therefore require a more complex source process in which the infrasonic signals are a record of only the broadband pressure excitation mechanism of the seismic LP events. The observations and numerical results can be explained by a model involving the repeated rapid pressure loss from a hydrothermal crack by venting into a shallow layer of loosely consolidated, highly permeable material. Heating by magmatic activity causes pressure to rise, periodically reaching the pressure threshold for rupture of the ‘‘valve’’ sealing the crack. Sudden opening of the valve generates the broadband infrasonic signal and simultaneously triggers the collapse of the crack, initiating resonance of the remaining fluid. Subtle waveform and amplitude variability of the infrasonic signals as recorded at an array 13.4 km to the NW of the volcano are attributed primarily to atmospheric boundary layer propagation effects, superimposed upon amplitude changes at the source.en
dc.language.isoEnglishen
dc.publisher.nameAMER GEOPHYSICAL UNIONen
dc.relation.ispartofJOURNAL OF GEOPHYSICAL RESEARCHen
dc.relation.ispartofseries/114(2009)en
dc.subjectinfrasounden
dc.subjecteventsen
dc.titleThe source of infrasound associated with long-period events at Mounten
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumberB04305en
dc.subject.INGV04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoringen
dc.subject.INGV04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniquesen
dc.identifier.doi10.1029/2008JB006128en
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Kyoto Univ., 33B-1, 1–11. Iverson, R. M., et al. (2006), Dynamics of seismogenic volcanic extrusion at Mount St. Helens in 2004–05, Nature, 444, 439– 443, doi:10.1038/ nature05322. Kitov, I. O., J. R. Murphy, O. P. Kusnetsov, B. W. Barker, and N. I. Nedoshivin (1997), An analysis of seismic and acoustic signals measured from a series of atmospheric and near-surface explosions, Bull. Seismol. Soc. Am., 87, 1553–1562. Kumagai, H., and B. A. Chouet (2000), Acoustic properties of a crack containing magmatic or hydrothermal fluids, J. Geophys. Res., 105, 25,493–25,512, doi:10.1029/2000JB900273. Kumagai, H., B. A. Chouet, and P. B. Dawson (2005), Source process of a long-period event at Kilauea volcano, Hawaii, Geophys. J. Int., 161, 243–254, doi:10.1111/j.1365-246X.2005.02502.x. Lahr, J. C., B. A. Chouet, C. D. Stephens, J. A. Power, and R. A. Page (1994), Earthquake classification, location, and error analysis in a volcanic environment: Implications for the magmatic system of the 1989 – 1990 eruptions of Redoubt Volcano, Alaska, J. Volcanol. Geotherm. Res., 62, 137–151, doi:10.1016/0377-0273(94)90031-0. Landau, L. D., and E. M. Lifshitz (1987), Fluid Mechanics, 2nd ed., Pergamon, New York. Larsson, C., and S. Israelsson (1991), Effects of meteorological conditions and source height on sound propagation near the ground, Appl. Acoust., 33, 109–121, doi:10.1016/0003-682X(91)90068-P. Leet, R. C. (1988), Saturated and subcooled hydrothermal boiling in groundwater-flow channels as a source of harmonic tremor, J. Geophys. Res., 93, 4835–4849, doi:10.1029/JB093iB05p04835. Leighton, T. G. (1994), The Acoustic Bubble, Academic, New York. Le Pichon, A., J. Guilbert, A. Vega, M. Garce´s, and N. Brachet (2002), Ground-coupled air waves and diffracted infrasound from the Arequipa earthquake of June 23, 2001, Geophys. Res. Lett., 29(18), 1886, doi:10.1029/2002GL015052. Le Pichon, A., J. Guilbert, M. Valle´e, J. X. Dessa, and M. Ulziibat (2003), Infrasonic imaging of the Kunlun Mountains for the great 2001 China earthquake, Geophys. Res. Lett., 30(15), 1814, doi:10.1029/2003GL017581. Le Pichon, A., P. Mialle, J. Guilbert, and J. Vergoz (2006), Multistation infrasonic observations of the Chilean earthquake of 2005 June 13, Geophys. J. Int., 167, 838–844, doi:10.1111/j.1365-246X.2006.03190.x. Lighthill, M. J. (2001), Waves in Fluids, Cambridge Univ. Press, Cambridge, U. K. Garce´s, M. A., R. A. Hansen, and K. G. Lindquist (1998), Traveltimes for infrasonic waves propagating in a stratified atmosphere, Geophys. J. Int., 135, 255–263, doi:10.1046/j.1365-246X.1998.00618.x. Garce´s, M., M. Iguchi, K. Ishihara, M. Morrissey, Y. Sudo, and T. Tsutsui (1999), Infrasonic precursors to a Vulcanian eruption at Sakurajima Volcano, Japan, Geophys. Res. Lett., 26, 2537 – 2540, doi:10.1029/ 1998GL005327. Garce´s, M., D. Fee, D. McCormack, R. Servranckx, H. Bass, C. Hetzer, M. Hedlin, R. Matoza, and H. Yepes (2008), Prototype ASHE volcano monitoring system captures the acoustic fingerprint of stratospheric ash injection, Eos Trans. AGU, 89, 377. Gerlach, T. M., K. A. McGee, and M. P. Doukas (2009), Emission rates of CO2, SO2, and H2S, scrubbing, and preeruption excess volatiles at Mount St. Helens, 2004– 2005, in A Volcano Rekindled: The First Year of Renewed Eruptions at Mount St. Helens, 2004 – 2006, edited by D. R. Sherrod, W. E. Scott, and P. H. Stauffer, U.S. Geol. Surv. Prof. Pap., 1750, in press. Gil Cruz, F., and B. A. Chouet (1997), Long-period events, the most characteristic seismicity accompanying the emplacement and extrusion of a lava dome in Galeras Volcano, Colombia, in 1991, J. Volcanol. Geotherm. Res., 77, 121– 158, doi:10.1016/S0377-0273(96)00091-1. Graves, R. W. (1996), Simulating seismic wave propagation in 3D elastic media using staggered-grid finite-differences, Bull. Seismol. Soc. Am., 86, 1091–1106. Green, D. N., and J. Neuberg (2006), Waveform classification of volcanic low-frequency earthquake swarms and its implication at Soufriere Hills Volcano,Montserrat, J. Volcanol.Geotherm. Res., 153, 51–63, doi:10.1016/ j.jvolgeores.2005.08.003. Harrington, R. M., and E. E. Brodsky (2007), Volcanic hybrid earthquakes that are brittle-failure events, Geophys. Res. Lett., 34, L06308, doi:10.1029/ 2006GL028714. Hedlin, M. A. H., B. Alcoverro, and G. D’Spain (2003), Evaluation of rosette infrasonic noise-reducing spatial filters, J. Acoust. Soc. Am., 114, 1807–1820, doi:10.1121/1.1603763. Hickey, C. J., and J. M. Sabatier (1997), Measurements of two types of dilatational waves in an air-filled unconsolidated sand, J. Acoust. Soc. Am., 102, 128– 136, doi:10.1121/1.419770. Iguchi, M., and K. Ishihara (1990), Comparison of earthquakes and airshocks accompanied with explosive eruptions at Sakurajima and Suwanosejima volcanoes (in Japanese), Annu. Disas. Prev. Res. Inst. Kyoto Univ., 33B-1, 1–11. Iverson, R. M., et al. (2006), Dynamics of seismogenic volcanic extrusion at Mount St. Helens in 2004–05, Nature, 444, 439– 443, doi:10.1038/ nature05322. Kitov, I. O., J. R. Murphy, O. P. Kusnetsov, B. W. Barker, and N. I. Nedoshivin (1997), An analysis of seismic and acoustic signals measured from a series of atmospheric and near-surface explosions, Bull. Seismol. Soc. Am., 87, 1553–1562. Kumagai, H., and B. A. Chouet (2000), Acoustic properties of a crack containing magmatic or hydrothermal fluids, J. Geophys. Res., 105, 25,493–25,512, doi:10.1029/2000JB900273. Kumagai, H., B. A. Chouet, and P. B. Dawson (2005), Source process of a long-period event at Kilauea volcano, Hawaii, Geophys. J. Int., 161, 243–254, doi:10.1111/j.1365-246X.2005.02502.x. Lahr, J. C., B. A. Chouet, C. D. Stephens, J. A. Power, and R. A. Page (1994), Earthquake classification, location, and error analysis in a volcanic environment: Implications for the magmatic system of the 1989 – 1990 eruptions of Redoubt Volcano, Alaska, J. Volcanol. Geotherm. Res., 62, 137–151, doi:10.1016/0377-0273(94)90031-0. Landau, L. D., and E. M. Lifshitz (1987), Fluid Mechanics, 2nd ed., Pergamon, New York. Larsson, C., and S. Israelsson (1991), Effects of meteorological conditions and source height on sound propagation near the ground, Appl. Acoust., 33, 109–121, doi:10.1016/0003-682X(91)90068-P. Leet, R. C. (1988), Saturated and subcooled hydrothermal boiling in groundwater-flow channels as a source of harmonic tremor, J. Geophys. Res., 93, 4835–4849, doi:10.1029/JB093iB05p04835. Leighton, T. G. (1994), The Acoustic Bubble, Academic, New York. Le Pichon, A., J. Guilbert, A. Vega, M. Garce´s, and N. Brachet (2002), Ground-coupled air waves and diffracted infrasound from the Arequipa earthquake of June 23, 2001, Geophys. Res. Lett., 29(18), 1886, doi:10.1029/2002GL015052. Le Pichon, A., J. Guilbert, M. Valle´e, J. X. Dessa, and M. Ulziibat (2003), Infrasonic imaging of the Kunlun Mountains for the great 2001 China earthquake, Geophys. Res. Lett., 30(15), 1814, doi:10.1029/2003GL017581. Le Pichon, A., P. Mialle, J. Guilbert, and J. Vergoz (2006), Multistation infrasonic observations of the Chilean earthquake of 2005 June 13, Geophys. J. Int., 167, 838–844, doi:10.1111/j.1365-246X.2006.03190.x. Lighthill, M. J. (2001), Waves in Fluids, Cambridge Univ. Press, Cambridge, U. K.Garce´s, M. A., R. A. Hansen, and K. G. Lindquist (1998), Traveltimes for infrasonic waves propagating in a stratified atmosphere, Geophys. J. Int., 135, 255–263, doi:10.1046/j.1365-246X.1998.00618.x. Garce´s, M., M. Iguchi, K. Ishihara, M. Morrissey, Y. Sudo, and T. Tsutsui (1999), Infrasonic precursors to a Vulcanian eruption at Sakurajima Volcano, Japan, Geophys. Res. Lett., 26, 2537 – 2540, doi:10.1029/ 1998GL005327. Garce´s, M., D. Fee, D. McCormack, R. Servranckx, H. Bass, C. Hetzer, M. Hedlin, R. Matoza, and H. Yepes (2008), Prototype ASHE volcano monitoring system captures the acoustic fingerprint of stratospheric ash injection, Eos Trans. AGU, 89, 377. Gerlach, T. M., K. A. McGee, and M. P. Doukas (2009), Emission rates of CO2, SO2, and H2S, scrubbing, and preeruption excess volatiles at Mount St. Helens, 2004– 2005, in A Volcano Rekindled: The First Year of Renewed Eruptions at Mount St. Helens, 2004 – 2006, edited by D. R. Sherrod, W. E. Scott, and P. H. Stauffer, U.S. Geol. Surv. Prof. Pap., 1750, in press. Gil Cruz, F., and B. A. Chouet (1997), Long-period events, the most characteristic seismicity accompanying the emplacement and extrusion of a lava dome in Galeras Volcano, Colombia, in 1991, J. Volcanol. Geotherm. Res., 77, 121– 158, doi:10.1016/S0377-0273(96)00091-1. Graves, R. W. (1996), Simulating seismic wave propagation in 3D elastic media using staggered-grid finite-differences, Bull. Seismol. Soc. Am., 86, 1091–1106. Green, D. N., and J. Neuberg (2006), Waveform classification of volcanic low-frequency earthquake swarms and its implication at Soufriere Hills Volcano,Montserrat, J. Volcanol.Geotherm. Res., 153, 51–63, doi:10.1016/ j.jvolgeores.2005.08.003. Harrington, R. M., and E. E. Brodsky (2007), Volcanic hybrid earthquakes that are brittle-failure events, Geophys. Res. Lett., 34, L06308, doi:10.1029/ 2006GL028714. Hedlin, M. A. H., B. Alcoverro, and G. D’Spain (2003), Evaluation of rosette infrasonic noise-reducing spatial filters, J. Acoust. Soc. Am., 114, 1807–1820, doi:10.1121/1.1603763. Hickey, C. J., and J. M. Sabatier (1997), Measurements of two types of dilatational waves in an air-filled unconsolidated sand, J. Acoust. Soc. Am., 102, 128– 136, doi:10.1121/1.419770. Iguchi, M., and K. Ishihara (1990), Comparison of earthquakes and airshocks accompanied with explosive eruptions at Sakurajima and Suwanosejima volcanoes (in Japanese), Annu. Disas. Prev. Res. Inst. Kyoto Univ., 33B-1, 1–11. Iverson, R. M., et al. (2006), Dynamics of seismogenic volcanic extrusion at Mount St. Helens in 2004–05, Nature, 444, 439– 443, doi:10.1038/ nature05322. Kitov, I. O., J. R. Murphy, O. P. Kusnetsov, B. W. Barker, and N. I. Nedoshivin (1997), An analysis of seismic and acoustic signals measured from a series of atmospheric and near-surface explosions, Bull. Seismol. Soc. Am., 87, 1553–1562. Kumagai, H., and B. A. Chouet (2000), Acoustic properties of a crack containing magmatic or hydrothermal fluids, J. Geophys. Res., 105, 25,493–25,512, doi:10.1029/2000JB900273. Kumagai, H., B. A. Chouet, and P. B. Dawson (2005), Source process of a long-period event at Kilauea volcano, Hawaii, Geophys. J. Int., 161, 243–254, doi:10.1111/j.1365-246X.2005.02502.x. Lahr, J. C., B. A. Chouet, C. D. Stephens, J. A. Power, and R. A. 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dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorMatoza, R. S.en
dc.contributor.authorGarcés, M. A.en
dc.contributor.authorChouet, B. A.en
dc.contributor.authorD'Auria, L.en
dc.contributor.authorHedlin, M. A. H.en
dc.contributor.authorDe Groot-Hedlin, E.en
dc.contributor.authorWaite, G. P.en
dc.contributor.departmentLaboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of Californiaen
dc.contributor.departmentInfrasound Laboratory, Hawai’i Institute of Geophysics andPlanetology, University of Hawai’i at Manoaen
dc.contributor.departmentU.S. Geological Survey, Menlo Park, Californiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.departmentLaboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of Californiaen
dc.contributor.departmentLaboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of Californiaen
dc.contributor.departmentU.S. Geological Survey, Menlo Park, Californiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptLaboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California-
crisitem.author.deptInfrasound Laboratory, Hawai’i Institute of Geophysics andPlanetology, University of Hawai’i at Manoa-
crisitem.author.deptU.S. Geological Survey, Menlo Park, California-
crisitem.author.deptLaboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California-
crisitem.author.deptLaboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California-
crisitem.author.deptU.S. Geological Survey, Menlo Park, California-
crisitem.author.orcid0000-0002-7664-2216-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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