Bulletin of Volcanology

, Volume 55, Issue 8, pp 596–603 | Cite as

Cross-correlation analysis of seismic and volcanic data at Mt Etna volcano, Italy

  • C. Cardaci
  • S. Falsaperla
  • P. Gasperini
  • G. Lombardo
  • W. Marzocchi
  • F. Mulargia


Seismic data from the MVT-SLN sesmic station located 7 km from the summit area of Mt Etna volcano, which has been operating steadily for the last two decades, have been analysed together with the volcanic activity during the same period. Cross-correlation techniques are used to investigate possible relationships between seismic and volcanic data and to evaluate the statistical significance of the results. A number of significant correlations have been identified, showing that there is an evident relation between seismic events and flank eruptions, and a less clear relation with summit activity, which appears more linked to tremor rather than to the low-frequency events. Particularly interesting are the low-frequency events whose rate of occurrence increases, starting from 17 to 108 days, prior to the onset of the flank activity and are candidates for a useful precursor. On the other hand, a tendency towards the increase in both the duration and the occurrence rate of transients in the volcanic tremor was observed before the onset of summit eruptions. As a result of this study different stages in the volcanic activity of Mt Etna, represented by changes in the characteristics of the recorded seismic phenomena, are identified.

Key words

Statistics Precursors Earthquakes Eruptions Tremor Volcanoes Etna 


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  1. Brantley S (1986) Two dome-building episodes at Mt St Helens in 1984 and 1985 and their accompanying seismicity. Earthq and Volc 18:207–217Google Scholar
  2. Chouet B (1988) Resonance of a fluid driven crack: Radiation properties and implications for the source of long period events and harmonic tremor. JGR 93, B5:4375–4400Google Scholar
  3. Cosentino M, Lombardo G, Privitera E (1989) A model for internal dynamical processes on Mt Etna. Geophys Jour 97, 3:367–379Google Scholar
  4. Crosson RS, Bame DA (1985) A spherical source model for low frequency volcanic earthquakes. J Geophys Res 90:10237–10247Google Scholar
  5. Falsaperla S (1991) Stromboli. Acta Volcanologica 1:272–274Google Scholar
  6. Falsaperla S, Lombardo G (1989) Preliminary characterization of seismic patterns at Mt Etna volcano. Bollettino GNV 1:239–247Google Scholar
  7. Fehler M, Chouet B (1982) Operation of a digital seismic network on Mount St Helens volcano and observations of long period seismic events that originate under the volcano. Geophys Res Lett 9:1017–1020Google Scholar
  8. Ferrick MG, Qamar A, Lawrence WS (1982) Source mechanism of volcanic tremor. J Geoph Res 87:8675–8683Google Scholar
  9. Kiefer SW (1984) Seismicity at Old Faithful Geyser: An isolated source of geothermal noise and possible analogue of volcanic seismicity. J Volc Geoth Res 22:59–95Google Scholar
  10. Koyanagi RY, Chouet B, Aki K (1987) Origin of volcanic tremor in Hawaii-Part 1-Data from Hawaiian Volcano Observatory 1969–1985, in: Volcanism in Hawaii, USGS Professional Paper 1350, pp 1221–1257Google Scholar
  11. Koyanagi RY, Nakata JS, Tomori A (1988) Seismic activity associated with eruptions at Kilauea volcano, Hawaii, in: “Kagoshima International Conference on Volcanoes”, Nat Inst Research Advanc Tokio and Kagoshima Prefect Govern, Japan, pp 195–198Google Scholar
  12. Lombardo G (1988) Seismic patterns at Mt Etna volcano (Italy), in: “Kagoshima International Conference on Volcanoes”, Nat Inst Research Advanc Tokio and kagoshima Prefect Govern, Japan, pp 551–554Google Scholar
  13. Lombardo G, Cardaci C (in press) The seismicity of the Etnean area and different features of observed seismic sequences. Acta VolcanologicaGoogle Scholar
  14. Lombardo G, Privitera E, Spampinato S (1987) Studio del tremore vulcanico nell'area: stato di avanzamento della ricerca. Bollettino GNV, 407–427Google Scholar
  15. Malone SD (1983) Volcanic earthquakes: examples from Mount St Helens, in “Earthquakes: Observations, Theory and Interpretation”, Elsevier, pp 463–455Google Scholar
  16. Malone SD, Endo ET, Weaver CS, Ramey JS (1981) Seismic monitoring for eruption prediction, in: “The 1980 eruptions of Mt St Helens, Washington”, USGS Professional Paper 1250, pp 803–813Google Scholar
  17. Martinelli B (1990) Analysis of seismic patterns observed at Nevado del Ruiz volcano, Colombia during August-September 1985. J Volc Geoth Res 41:297–314Google Scholar
  18. Medina F, Gonzalez L, Gutierrez C, Aguilera R, Espindola JM (1992) Analysis of the seismic activity related to the 1982 eruptions of the El Chichon volcano, Mexico. In: Springer-Verlag (ed) Volcanic Seismology, pp 97–108Google Scholar
  19. McKee CO, Wallance EDA, Almond RA, Talai B (1984) Fatal hydro-eruption of Karkar volcano, in: “1979: development of a maar-like crater”, RW Johnson (Editor), Cookre-Ravian volume of Volcanological Papers, Geol Surv Papua New Guinea Mem 10, pp 63–84Google Scholar
  20. McNutt SR (1986) Observations and analysis of B-type earthquakes, explosions and volcanic tremor at Pavlov volcano, Alaska. Bull Seismol Soc Am 76:53–75Google Scholar
  21. Mulargia F, Gasperini P, Marzocchi W (1991) Pattern recognition applied to volcanic activity: identification of the precursory pattern to Etna recent flank eruptions and period of rest. J Volc Geoth Res 45:187–196Google Scholar
  22. Okada H, Nishimura Y, Miyamachi H, Mori H, Ishihara K (1990) Geophysical significance of the 1988–1989 explosive eruptions of Mt Tokachi, Hokkaido, Japan. Bull Volcanol Soc Japan 2, 35, 2:175–203Google Scholar
  23. Schick R, Riuscetti M (1973) An analysis of volcanic tremor at South Italian volcanoes. Zeitschrift für Geophysik 39:247–262Google Scholar
  24. Schick R, Cosentino M, Lombardo G, Patanè G (1982) Volcanic tremor at Mt Etna — a brief description, in: Mount Etna volcano, Mem Soc Geol 1t. 23:191–196Google Scholar
  25. St Lawrence W, Qamar A (1979) Hydraulic transients: a seismic source in volcanoes and glaciers, Science 203:654–656Google Scholar

Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • C. Cardaci
    • 1
  • S. Falsaperla
    • 1
  • P. Gasperini
    • 2
  • G. Lombardo
    • 3
  • W. Marzocchi
    • 4
  • F. Mulargia
    • 4
  1. 1.Ist. Internaz. VulcanologiaCNRCataniaItaly
  2. 2.Dip. Scienze della TerraUniv. FirenzeFirenzeItaly
  3. 3.Ist. Geologia e GeofisicaUniv. CataniaCataniaItaly
  4. 4.Dip. Fisica, sett. GeofisicaUniv. BolognaBolognaItaly

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