Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2197
DC Field | Value | Language |
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dc.contributor.authorall | Patanè, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Barberi, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Cocina, O.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | De Gori, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
dc.contributor.authorall | Chiarabba, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
dc.date.accessioned | 2007-07-03T07:09:00Z | en |
dc.date.available | 2007-07-03T07:09:00Z | en |
dc.date.issued | 2006 | en |
dc.identifier.uri | http://hdl.handle.net/2122/2197 | en |
dc.description.abstract | The continuous volcanic and seismic activity at Mount Etna makes this volcano an important laboratory for seismological and geophysical studies. We used repeated three-dimensional tomography to detect variations in elastic parameters during different volcanic cycles, before and during the October 2002–January 2003 flank eruption. Well-defined anomalous low P- to S-wave velocity ratio volumes were revealed. Absent during the pre-eruptive period, the anomalies trace the intrusion of volatile-rich (Q4 weight percent) basaltic magma, most of which rose up only a few months before the onset of eruption. The observed time changes of velocity anomalies suggest that four-dimensional tomography provides a basis for more efficient volcano monitoring and shortand midterm eruption forecasting of explosive activity. | en |
dc.format.extent | 727523 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.publisher.name | American Association for the Advancement of Science | en |
dc.relation.ispartof | Science | en |
dc.relation.ispartofseries | /313 (2006) | en |
dc.subject | NONE | en |
dc.title | Time-resolved seismic tomography detects magma intrusions at Mt. Etna | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 821-823 | en |
dc.identifier.URL | www.sciencemag.org/cgi/content/full/313/5788/821/DC1 | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.02. Geological and geophysical evidences of deep processes | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring | en |
dc.identifier.doi | 10.1126/science.1127724 | en |
dc.relation.references | 1. B. R. Julian, A. M. Pitt, G. R. Foulger, Geophys. J. Int. 133, F7 (1998). 2. G. R. Foulger et al., J. Geophys. Res. 108, 10.1029/ 2000JB000041 (2003). 3. G. Guerin, W. He, R. N. Anderson, L. Xu, U. T. Mello, in 2000 Offshore Technology Conference, paper 12101, www.ces-enterprise.com/vpatch/bp/attachments/ OTC2000_Guerin.pdf. 4. R. O’Connell, B. Budiansky, J. Geophys. Res. 79, 5412 (1974). 5. N. I. Christensen, W. W. Wepfer, Geol. Soc. Am. Mem. 172, 91 (1989). 6. Z. W. Wang, A. Nur, Soc. Pet. Eng. Res. Eng. 3, 429 (1989). 7. J. Dvorkin, G. Mavko, A. Nur, Geophys. Res. Lett. 26, 3417 (1999). 8. G. Mavko, J. Geophys. Res. 85, 5173 (1980). 9. H. Sato, I. S. Sacks, T. Murase, J. Geophys. Res. 94, 5689 (1989). 10. C. O. Sanders, S. C. Ponko, L. D. Nixon, E. A. Schwartz, J. Geophys. Res. 100, 8311 (1995). 11. M. Coltelli, P. Del Carlo, L. Vezzoli, Int. J. Earth Sci. 89, 665 (2000). 12. R. Clocchiatti, M. Condomines, N. Guenot, J. C. Tanguy, Earth Planet. Sci. Lett. 226, 397 (2004). 13. N. Spilliaert, P. Allard, N. Me´ trich, A. V. Sobolev, J. Geophys. Res. 111, 10.1029/2005JB003934 (2006). 14. C. H. Thurber, in Seismic Tomography: Theory and Practice, H. M. Iyer, K. Hirahara, Eds. (Chapman and Hall, London, 1993), pp. 563–583. 15. D. Patane` , C. Chiarabba, P. De Gori, A. Bonaccorso, Science 299, 2061 (2003). 16. M. Laigle, A. Hirn, M. Sapin, J. C. Lepine, J. Geophys. Res. 105, 21,633 (2000). 17. C. Chiarabba, P. De Gori, D. Patane` , in Mt. Etna: Volcano Laboratory, A. Bonaccorso, S. Calvari, M. Coltelli, C. Del Negro, S. Falsaperla, Eds. (Geophysical Monograph Series, American Geophysical Union, Washington, DC, 2004), pp. 191–204. 18. For igneous rocks, laboratory experiments found that the VP /VS ratio generally decreases as temperature increases and increases as pressure increases. An increase in the VP /VS ratio is related to increases in temperature, fracture, and especially partial melt, whereas a decrease in the ratio can be associated with the presence of gas or supercritical fluids [see (10) and references therein]. 19. M. Aloisi, A. Bonaccorso, S. Gambino, M. Mattia, G. Puglisi, Geophys. Res. Lett. 30, 10.1029/ 2003GL018896 (2003). 20. D. Patane` , M. Mattia, M. Aloisi, Geophys. Res. Lett. 32, 10.1029/2004GL021773 (2005). 21. S. Gambino, A. Mostaccio, D. Patane` , L. Scarfı`, A. Ursino, Geophys. Res. Lett. 31, 10.1029/2004GL020499 (2004). 22. D. Andronico et al., Bull. Volcanol. 67, 10.1007/s00445- 004-0372-8 (2005). 23. C. Martı´nez-Arevalo, D. Patane` , A. Rietbrock, J. Ibanez, Geophys. Res. Lett. 32, 10.1029/2005GL023736 (2005). 24. Theory predicts that the velocity decreases and VP /VS increases for increasing crack density (4). High VP /VS values affecting portions of fault zones, such as at the San Andreas Fault, are interpreted as evidence for the presence of overpressured fluids (25). The influence of pore pressure on seismic velocities is caused by the tendency of cracks to remain open when they are internally pressurized (26). Thus, fracturing and increasing pore pressure cause a relatively marked decrease of VS but only a small decrease of VP, which yields an increased VP/VS ratio. The concentration of fluids in a dike intrusion mainly occurs near its tip. Moreover, a rapid migration of fluids in the surrounding rock volume can also occur, especially when prefractured zones exist, leading to a high VP/VS ratio and to an increase of the seismicity (Figs. 2 and 4C). 25. C. H. Thurber et al., Geophys. Res. Lett. 24, 1591 (1997). 26. A. Nur, Bull. Seismol. Soc. Am. 62, 1217 (1972). 27. A. Michelini, T. V. McEvilly, Bull. Seismol. Soc. Am. 81, 524 (1991). 28. M. Reyners, D. Eberhart-Phillips, G. Stuart, Geophys. J. Int. 137, 873 (1999). 29. We thank T. Caltabiano for SO2 flux data and anonymous referees for helpful comments and suggestions on the manuscript. This work was supported by grants from the European Union VOLUME FP6-2004-Global-3 and INGV– Department of Civil Protection V3/6 projects. | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Patanè, D. | en |
dc.contributor.author | Barberi, G. | en |
dc.contributor.author | Cocina, O. | en |
dc.contributor.author | De Gori, P. | en |
dc.contributor.author | Chiarabba, C. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | - |
crisitem.author.orcid | 0000-0001-9410-5126 | - |
crisitem.author.orcid | 0000-0002-8273-0458 | - |
crisitem.author.orcid | 0000-0003-1856-830X | - |
crisitem.author.orcid | 0000-0001-8160-0849 | - |
crisitem.author.orcid | 0000-0002-8111-3466 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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