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Real-time monitoring and massive inversion of source parameters of very long period seismic signals:An application to Stromboli Volcano, Italy.
Author(s)
Language
English
Status
Published
Peer review journal
Yes
Title of the book
Issue/vol(year)
/33 (2006)
Publisher
AGU
Pages (printed)
L04301
Issued date
2006
Keywords
Abstract
We present a comprehensive processing tool for the
real-time analysis of the source mechanism of very long
period (VLP) seismic data based on waveform inversions
performed in the frequency domain for a point source. A
search for the source providing the best-fitting solution is
conducted over a three-dimensional grid of assumed source
locations, in which the Green’s functions associated with
each point source are calculated by finite differences using
the reciprocal relation between source and receiver. Tests
performed on 62 nodes of a Linux cluster indicate that the
waveform inversion and search for the best-fitting signal
over 100,000 point sources require roughly 30 s of
processing time for a 2-min-long record. The procedure is
applied to post-processing of a data archive and to
continuous automatic inversion of real-time data at
Stromboli, providing insights into different modes of
degassing at this volcano
real-time analysis of the source mechanism of very long
period (VLP) seismic data based on waveform inversions
performed in the frequency domain for a point source. A
search for the source providing the best-fitting solution is
conducted over a three-dimensional grid of assumed source
locations, in which the Green’s functions associated with
each point source are calculated by finite differences using
the reciprocal relation between source and receiver. Tests
performed on 62 nodes of a Linux cluster indicate that the
waveform inversion and search for the best-fitting signal
over 100,000 point sources require roughly 30 s of
processing time for a 2-min-long record. The procedure is
applied to post-processing of a data archive and to
continuous automatic inversion of real-time data at
Stromboli, providing insights into different modes of
degassing at this volcano
References
Aki, K., and P. G. Richards (1980), Quantitative Seismology: Theory and
Methods, 932 pp., W. H. Freeman, New York.
Almendros, J., and B. Chouet (2003), Performance of the radial semblance
method for the location of very long period volcanic signals, Bull. Seismol.
Soc. Am., 93(5), 1890– 1903.
Aster, R., J. Lees, and J. Neuberg (2000), Editorial. Broadband seismic and
acoustic observations of volcanic seismicity, J. Volcanol. Geotherm. Res.,
101, vii – viii.
Chouet, B. (1996), New methods and future trends in seismological volcano
monitoring, in Monitoring and Mitigation of Volcano Hazards, pp. 23–
97, Springer, New York.
Chouet, B., N. Hamisevicz, and T. R. McGetchin (1974), Photoballistics
of volcanic jet activity at Stromboli, Italy, J. Geophys. Res., 79, 4961–
4976.
Chouet, B., G. Saccorotti, P. Dawson, M. Martini, R. Scarpa, G. De Luca,
G. Milana, and M. Cattaneo (1999), Broadband measurements of the
sources of explosions at Stromboli Volcano, Italy, Geophys. Res. Lett.,
26(13), 1937–1940.
Chouet, B., P. Dawson, T. Ohminato, M. Martini, G. Saccorotti,
F. Giudicepietro, G. De Luca, G. Milana, and R. Scarpa (2003), Source
mechanisms of explosions at Stromboli Volcano, Italy, determined from
moment-tensor inversions of very-long-period data, J. Geophys. Res.,
108(B1), 2019, doi:10.1029/2002JB001919.
Chouet, B., P. Dawson, and A. Arciniega-Ceballos (2005), Source mechanism
of Vulcanian degassing at Popocatpetl Volcano, Mexico, determined
from waveform inversions of very long period signals, J. Geophys. Res.,
110, B07301, doi:10.1029/2004JB003524.
D’Auria, L., M. Martini, E. Auger, F. Giudicepietro, W. De Cesare, and
G. Scarpato (2004), Real-time automatic seismic monitoring of
Stromboli using massive parallel computing, paper presented at IAVCEI
General Assembly, Int. Assoc. of Volcanol. and Chem. of the Earth’s
Inter., Pucon, Chile.
Dawson, P., D. Whilldin, and B. Chouet (2004), Application of near
real-time radial semblance to locate the shallow magmatic conduit at
Kilauea Volcano, Hawaii, Geophys. Res. Lett., 31, L21606,
doi:10.1029/2004GL021163.
Kawakatsu, H., S. Kaneshima, H. Matsubayashi, T. Ohminato, Y. Sudo,
T. Tsutui, K. Uhira, H. Yamasato, H. Ito, and D. Legrand (2000), Aso94:
Aso seismic observation with broadband instruments, J. Volcanol.
Geotherm. Res., 101, 129– 154.
Matsubayashi, H. (1995), The source of the long period tremors and the
very-long period events preceding the mud eruption at Aso Volcano,
Japan (in Japanese with English abstract), M. S. thesis, Tokyo Univ.,
Tokyo.
Mosegaard, K., and A. Tarantola (2002), Probabilistic approach to inverse
problems, in International Handbook of Earthquake and Engineering
Seismology, pp. 237–265, Elsevier, New York.
Ohminato, T., and B. A. Chouet (1997), A free-surface boundary condition
for including 3D topography in the finite-difference method, Bull.
Seismol. Soc. Am., 87(2), 494– 515.
Ohminato, T., B. A. Chouet, P. Dawson, and S. Kedar (1998), Waveform
inversion of very long period impulsive signals associated with magmatic
injection beneath Kilauea Volcano, Hawaii, J. Geophys. Res., 103(B10),
23,869– 23,862.
Uhira, K., and M. Takeo (1994), The source of explosive eruptions of
Sakurajima Volcano, Japan, J. Geophys. Res., 99(B9), 17,775 –
17,789.
Yilmaz, O. (1987), Seismic Data Processing, Soc. of Explor. Geophys.,
Tulsa, Okla.
Methods, 932 pp., W. H. Freeman, New York.
Almendros, J., and B. Chouet (2003), Performance of the radial semblance
method for the location of very long period volcanic signals, Bull. Seismol.
Soc. Am., 93(5), 1890– 1903.
Aster, R., J. Lees, and J. Neuberg (2000), Editorial. Broadband seismic and
acoustic observations of volcanic seismicity, J. Volcanol. Geotherm. Res.,
101, vii – viii.
Chouet, B. (1996), New methods and future trends in seismological volcano
monitoring, in Monitoring and Mitigation of Volcano Hazards, pp. 23–
97, Springer, New York.
Chouet, B., N. Hamisevicz, and T. R. McGetchin (1974), Photoballistics
of volcanic jet activity at Stromboli, Italy, J. Geophys. Res., 79, 4961–
4976.
Chouet, B., G. Saccorotti, P. Dawson, M. Martini, R. Scarpa, G. De Luca,
G. Milana, and M. Cattaneo (1999), Broadband measurements of the
sources of explosions at Stromboli Volcano, Italy, Geophys. Res. Lett.,
26(13), 1937–1940.
Chouet, B., P. Dawson, T. Ohminato, M. Martini, G. Saccorotti,
F. Giudicepietro, G. De Luca, G. Milana, and R. Scarpa (2003), Source
mechanisms of explosions at Stromboli Volcano, Italy, determined from
moment-tensor inversions of very-long-period data, J. Geophys. Res.,
108(B1), 2019, doi:10.1029/2002JB001919.
Chouet, B., P. Dawson, and A. Arciniega-Ceballos (2005), Source mechanism
of Vulcanian degassing at Popocatpetl Volcano, Mexico, determined
from waveform inversions of very long period signals, J. Geophys. Res.,
110, B07301, doi:10.1029/2004JB003524.
D’Auria, L., M. Martini, E. Auger, F. Giudicepietro, W. De Cesare, and
G. Scarpato (2004), Real-time automatic seismic monitoring of
Stromboli using massive parallel computing, paper presented at IAVCEI
General Assembly, Int. Assoc. of Volcanol. and Chem. of the Earth’s
Inter., Pucon, Chile.
Dawson, P., D. Whilldin, and B. Chouet (2004), Application of near
real-time radial semblance to locate the shallow magmatic conduit at
Kilauea Volcano, Hawaii, Geophys. Res. Lett., 31, L21606,
doi:10.1029/2004GL021163.
Kawakatsu, H., S. Kaneshima, H. Matsubayashi, T. Ohminato, Y. Sudo,
T. Tsutui, K. Uhira, H. Yamasato, H. Ito, and D. Legrand (2000), Aso94:
Aso seismic observation with broadband instruments, J. Volcanol.
Geotherm. Res., 101, 129– 154.
Matsubayashi, H. (1995), The source of the long period tremors and the
very-long period events preceding the mud eruption at Aso Volcano,
Japan (in Japanese with English abstract), M. S. thesis, Tokyo Univ.,
Tokyo.
Mosegaard, K., and A. Tarantola (2002), Probabilistic approach to inverse
problems, in International Handbook of Earthquake and Engineering
Seismology, pp. 237–265, Elsevier, New York.
Ohminato, T., and B. A. Chouet (1997), A free-surface boundary condition
for including 3D topography in the finite-difference method, Bull.
Seismol. Soc. Am., 87(2), 494– 515.
Ohminato, T., B. A. Chouet, P. Dawson, and S. Kedar (1998), Waveform
inversion of very long period impulsive signals associated with magmatic
injection beneath Kilauea Volcano, Hawaii, J. Geophys. Res., 103(B10),
23,869– 23,862.
Uhira, K., and M. Takeo (1994), The source of explosive eruptions of
Sakurajima Volcano, Japan, J. Geophys. Res., 99(B9), 17,775 –
17,789.
Yilmaz, O. (1987), Seismic Data Processing, Soc. of Explor. Geophys.,
Tulsa, Okla.
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