Source Quantification of Volcanic-Seismic Signals
- Autoregressive equation
A difference form of the equation of motion of a linear dynamic system, which is a basic equation to determine the complex frequencies (frequencies and Q factors) of decaying harmonic oscillations in observed signals.
- Crack wave
A dispersive wave generated by fluid-solid interactions in a crack. The phase velocity of the crack wave is smaller than the acoustic velocity of the fluid in the crack.
- Moment tensor
A point seismic source representation defined by the first-order moment of the equivalent body force or the stress glut. Slip on a fault as well as volumetric changes such as an isotropic expansion and tensile crack can be represented by the moment tensor.
- Waveform inversion
An approach to estimate source mechanisms and locations of seismic events by finding the best fits between observed and synthesized seismograms.
Definition of the Subject
Volcano seismicity produces a wide variety of seismic signals that provide glimpses of the internal...
I am deeply grateful to Masaru Nakano for numerous discussions on all the subjects presented in this manuscript. I thank Yasuko Takei for constructive comments on the phenomenological source representation. Comments from Pablo Palacios, Luca D’Auria, Takeshi Nishimura, Yuta Maeda, and an anonymous reviewer helped improve the manuscript. I used the Generic Mapping Tools (GMT) (Wessel and Smith 1998) in the preparation of figures.
- Aki K, Richards PG (2002) Quantitative seismology, 2nd edn. University Science Books, SausalitoGoogle Scholar
- Bouchon M (1981) A simple method to calculate Green’s functions for elastic layered media. Bull Seism Soc Am 71:959–971Google Scholar
- Chouet BA, Dawson PB, Ohminato T, Martini M, Saccorotti G, Guidicepierto F, De Luca G, Milana G, Scarpa R (2003) Source mechanisms of explosions at Stromboli Volcano, Italy, determined from moment-tensor inversions of very-long-period data. J Geophys Res 108:2331. https://doi.org/10.1029/2003JB002535CrossRefGoogle Scholar
- Dawson PB, Dietel C, Chouet BA, Honma K, Ohminato T, Okubo P (1998) A digitally telemetered broadband seismic network at Kilauea volcano, Hawaii. US Geol Surv Open File Rep 98(108):1–121Google Scholar
- Iguchi M (1994) A vertical expansion source model for the mechanisms of earthquakes originated in the magma conduit of an andesitic volcano: Sakurajima, Japan. Bull Volcanol Soc Jpn 39:49–67Google Scholar
- Kawase H (1988) Time domain response of a semi-circular canyon for incident SV, P and Rayleigh waves calculated by the discrete wavenumber boundary element method. Bull Seism Soc Am 78:1415–1437Google Scholar
- Menke W (1989) Geophysical data analysis: discrete inverse theory, Revised edn. Academic, San DiegoGoogle Scholar
- Minakami T (1974) Seismology of volcanoes in Japan. In: Civetta L, Gasparini P, Luongo G, Rapolla A (eds) Physical volcanology. Elsevier, Amsterdam, pp 1–27Google Scholar
- Morita Y, Nakao S, Hayashi Y (2006) A quantitative approach to the dike intrusion process inferred from a joint analysis of geodetic and seismological data for the 1998 earthquake swarm off the east coast of Izu Peninsula, Central Japan. J Geophys Res 111:B06208. https://doi.org/10.1029/2005JB003860ADSCrossRefGoogle Scholar
- Ohminato T, Chouet BA (1997) A free-surface boundary condition for including 3D topography in the finite difference method. Bull Seism Soc Am 87:494–515Google Scholar
- Stump BW, Johnson LR (1977) The determination of source properties by the linear inversion of seismograms. Bull Seism Soc Am 67:1489–1502Google Scholar
- Takeuchi H, Saito M (1972) Seismic surface waves. In: Bolt BA (ed) Methods in computational physics, vol 11. Academic, New York, pp 217–295Google Scholar
- Tameguri T, Iguchi M, Ishihara K (2002) Mechanism of explosive eruptions from moment tensor analyses of explosion earthquakes at Sakurajima volcano, Japan. Bull Volcanol Soc Jpn 47:197–216Google Scholar
- Tolstoy I (1954) Dispersive properties of a fluid layer overlying a semi-infinite elastic solid. Bull Seism Soc Am 44:493–512Google Scholar
- Wessel P, Smith WHF (1998) New improved version of generic mapping tools released. Eos Trans AGU 122:149–164Google Scholar
- Yamamoto M (2005) Volcanic fluid system inferred from broadband seismic signals. Ph D thesis. In: University of TokyoGoogle Scholar