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infrasonic waves

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Journal Article
Published: 18 August 2020
Bulletin of the Seismological Society of America (2020) 110 (6): 2991–3003.
... signals generated by Rayleigh waves. The study represents the first attempt to analyze ground‐coupled infrasonic waves with strain waves and illustrates the potential of collocated strainmeter–microbarometer stations for basic seismoacoustic studies. KEY POINTS I analyze the atmospheric pressure...
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Journal Article
Published: 08 January 2020
Seismological Research Letters (2020) 91 (2A): 921–929.
...Sarah Albert; Lisa Linville Abstract Low‐frequency sound ≤ 20 Hz , known as infrasound, is generated by a variety of natural and anthropogenic sources. Following an event, infrasonic waves travel through a dynamic atmosphere that can change on the order of minutes. This makes infrasound event...
FIGURES
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▴ Celerity (or mean travel velocity) is used to identify the nature of the ...
Published: 01 July 2010
Figure 4. ▴ Celerity (or mean travel velocity) is used to identify the nature of the infrasonic waves.
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Seismograms for the 2 August 2003 explosion. Top: Unfiltered traces. Bottom...
Published: 01 October 2010
Figure 20. Seismograms for the 2 August 2003 explosion. Top: Unfiltered traces. Bottom: Same traces filtered between 30 and 40 Hz to observe the infrasonic wave.
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Network triad beam‐forming results for the 27 November 2013 meteor, located...
Published: 01 September 2014
Figure 4. Network triad beam‐forming results for the 27 November 2013 meteor, located at the network beam position (star). Although the detection of a ballistic or line‐source trajectory for the meteoroid is not apparent, the propagation of an infrasonic wave propagating to the southeast to south
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A map of the infrasound events used in this study. Lines originate from the...
Published: 08 January 2020
Figure 1. A map of the infrasound events used in this study. Lines originate from the source location and connect to all stations (black triangles) that detected the event. Note that lines are straight paths and do not represent the actual path traveled by the infrasonic wave. Line colors
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Figure 4. A: After 28 December 2002, lava erupted from vents located just b...
Published: 01 May 2005
caused effusive fractures to progressively shut down. This induced magma to steadily rise up conduit, increasing gas overpressure and explosive activity. Upward magma migration was monitored by progressive reduction in thermo-acoustic time delays, and by amplitude increase of infrasonic waves
Journal Article
Published: 01 April 2007
Bulletin of the Seismological Society of America (2007) 97 (2): 417–425.
... by analyzing the Rayleigh waves and found to be 06h55m27±2sec coordinated universal time ( utc ). Ground truth of the explosion was invoked to assess the accuracy of the location derived from infrasound data recorded over Western Europe. Different infrasonic phases were identified by using array-processing...
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<span class="search-highlight">Infrasonic</span> and seismic observations of meteor-generated shock <span class="search-highlight">waves</span> observe...
Published: 01 October 2009
Figure 3. Infrasonic and seismic observations of meteor-generated shock waves observed to couple to the surface over a 24 month period of observation at ELFO. Infrasound from the nearest and least noisy microbarometer site is given above (either ELFO2 or ELFO4), with the corresponding vertical
Journal Article
Journal: Geology
Published: 01 May 2005
Geology (2005) 33 (5): 341–344.
... caused effusive fractures to progressively shut down. This induced magma to steadily rise up conduit, increasing gas overpressure and explosive activity. Upward magma migration was monitored by progressive reduction in thermo-acoustic time delays, and by amplitude increase of infrasonic waves ...
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Journal Article
Published: 01 June 1975
Bulletin of the Seismological Society of America (1975) 65 (3): 637–650.
...) . A preliminary report on infrasonic waves as a source of long-period noise , J. Geophys. Res. 79 , 4908 - 4917 . Sorrells G. G. Douze E. J. (1974b) . Earth noise from atmospheric...
Journal Article
Published: 23 March 2016
Seismological Research Letters (2016) 87 (3): 678–684.
... infrasonic signal (Fig.  1b ). The seismic wave took approximately 40 s to propagate 294 km from the epicenter to the array, with a mean propagation velocity of 7.3  km/s, consistent with the Moho‐discontinuity refracted P ‐wave arrival. © 2016 by the Seismological Society of America Earthquakes...
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Journal Article
Published: 01 July 2010
Seismological Research Letters (2010) 81 (4): 614–624.
...Figure 4. ▴ Celerity (or mean travel velocity) is used to identify the nature of the infrasonic waves. ...
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Journal Article
Published: 15 October 2014
Seismological Research Letters (2014) 85 (6): 1151–1162.
... on infrasonic wave propagation , J. Geophys. Res. , doi: 10.1002/2013JB010827 . Lopez T. Fee D. Prata F. Dehn J. ( 2013 ). Characterization and interpretation of volcanic activity at Karymsky Volcano, Kamchatka, Russia, using observations of infrasound, volcanic emissions, and thermal...
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Journal Article
Published: 01 September 2014
Seismological Research Letters (2014) 85 (5): 1012–1018.
...Figure 4. Network triad beam‐forming results for the 27 November 2013 meteor, located at the network beam position (star). Although the detection of a ballistic or line‐source trajectory for the meteoroid is not apparent, the propagation of an infrasonic wave propagating to the southeast to south...
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Journal Article
Published: 02 October 2023
The Seismic Record (2023) 3 (4): 249–258.
... to seismic tremor or sustained infrasonic signals ( Matoza and Fee, 2014 ). The coherence between the infrasound data and the vertical component of the seismometer is crucial for identifying frequencies that are from air‐to‐ground coupled waves instead of pure seismic waves. For nearly colocated infrasound...
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Journal Article
Published: 14 June 2023
Bulletin of the Seismological Society of America (2023) 113 (4): 1616–1627.
... ) produced shorter infrasonic signals, weak energy content, and difficulty in correlating with the P and S waves. Contrary to other signals, signals 6, 16, and 17 arrived more than 20 s later than the estimated P ‐wave arrival time. Similarly, to identify infrasound signals produced by rainstorms...
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Journal Article
Published: 01 February 2004
Bulletin of the Seismological Society of America (2004) 94 (1): 220–236.
... increase in the total range of infrasonic noise as a function of frequency. The lack of correlation of seismic noise with wind velocity is consistent with the 10-m borehole and the lack of coupling between the atmospheric pressure variations and seismic waves in the hard rock at the site. There are 157...
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Journal Article
Published: 05 September 2018
Seismological Research Letters (2018) 89 (6): 2227–2236.
... region. The analysis of the recorded signals in different directions offers an opportunity to better understand the source mechanism of pressure wave generation involved in moderately sized earthquakes. Shani‐Kadmiel et al. (2018) analyzed infrasonic signals detected at one IMS station (I26DE) from...
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Journal Article
Published: 01 August 2009
Bulletin of the Seismological Society of America (2009) 99 (4): 2541–2551.
... shown to be well-adapted for infrasonic array data in which low-amplitude coherent waves are detected within noncoherent noise (e.g., Garces and Hetzer, 2002 ; Le Pichon et al. , 2003 ). Of the four detections made in a 4 hr period surrounding the earthquake origin time, only one has a back azimuth...
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