DOI: 10.1785/bssa0880030653. Shallow velocity structure of Stromboli volcano, Italy, derived from small-aperture array measurements of Strombolian tremor

Shallow velocity structure of Stromboli volcano, Italy, derived from small-aperture array measurements of Strombolian tremor

10.1785/bssa0880030653

Crossref journal-article

Seismological Society of America (SSA)

Bulletin of the Seismological Society of America (790)

Abstract

Abstract The properties of the tremor wave field at Stromboli are analyzed using data from small-aperture arrays of short-period seismometers deployed on the north flank of the volcano. The seismometers are configured in two semi-circular arrays with radii of 60 and 150 m and a linear array with length of 600 m. The data are analyzed using a spatiotemporal correlation technique specifically designed for the study of the stationary stochastic wave field of Rayleigh and Love waves generated by volcanic activity and by scattering sources distributed within the island. The correlation coefficients derived as a function of frequency for the three components of motion clearly define the dispersion characteristics for both Rayleigh and Love waves. Love and Rayleigh waves contribute 70% and 30%, respectively, of the surface-wave power. The phase velocities of Rayleigh waves range from 1000 m/sec at 2 Hz to 350 m/sec at 9 Hz, and those for Love waves range from 800 to 400 m/sec over the same frequency band. These velocities are similar to those measured near Puu Oo on the east rift of Kilauea Volcano, Hawaii, although the dispersion characteristics of Rayleigh waves at Stromboli show a stronger dependence on frequency. Such low velocities are consistent with values expected for densely cracked solidified basalt. The dispersion curves are inverted for a velocity model beneath the arrays, assuming those dispersions represent the fundamental modes of Rayleigh and Love waves.

Bibliography

Chouet, B., De Luca, G., Milana, G., Dawson, P., Martini, M., & Scarpa, R. (1998). Shallow velocity structure of Stromboli volcano, Italy, derived from small-aperture array measurements of Strombolian tremor. Bulletin of the Seismological Society of America, 88(3), 653â666.

Authors 6

Bernard Chouet (first)
Gaetano De Luca (additional)
Giuliano Milana (additional)
Phillip Dawson (additional)
Marcello Martini (additional)
Roberto Scarpa (additional)

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Dates

Type	When
Created	2 years, 7 months ago (Jan. 10, 2023, 9:32 a.m.)
Deposited	2 years, 7 months ago (Jan. 10, 2023, 9:33 a.m.)
Indexed	2 weeks ago (Aug. 21, 2025, 1:20 p.m.)
Issued	27 years, 3 months ago (June 1, 1998)
Published	27 years, 3 months ago (June 1, 1998)
Published Online	27 years, 3 months ago (June 1, 1998)
Published Print	27 years, 3 months ago (June 1, 1998)

Funders 0

None

BibTeX

@article{Chouet_1998, title={Shallow velocity structure of Stromboli volcano, Italy, derived from small-aperture array measurements of Strombolian tremor}, volume={88}, ISSN={0037-1106}, url={http://dx.doi.org/10.1785/bssa0880030653}, DOI={10.1785/bssa0880030653}, number={3}, journal={Bulletin of the Seismological Society of America}, publisher={Seismological Society of America (SSA)}, author={Chouet, Bernard and De Luca, Gaetano and Milana, Giuliano and Dawson, Phillip and Martini, Marcello and Scarpa, Roberto}, year={1998}, month=jun, pages={653–666} }

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