Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/12821| DC Field | Value | Language |
|---|---|---|
| dc.date.accessioned | 2019-10-17T12:52:41Z | en |
| dc.date.available | 2019-10-17T12:52:41Z | en |
| dc.date.issued | 2005-03-12 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/12821 | en |
| dc.description | the spatial variations of the b value in the area studied are real circumstances, linked to the magmatic processes ongoing in that period of time and leading to the eruptive phenomena. Our detailed b value tomography appears to be a good example in which an intrusion activity may be also documented by increased b values. Our analysis demonstrates clearly that the parameter b is a sensitive and accurate indicator of the magmatic processes that occurred during the investigation period at Etna volcano. In summary, the anomalies observed during the two period analyzed (August 1999–June 2001 and July–August 2001) appear to be the result of a fundamental process connected to the magma ascending, ending with a high velocity vertical dike emplacement, which heralded to the July–August 2001 eruption. | en |
| dc.description.abstract | The pattern of b value of the frequency-magnitude relation, or mean magnitude, has been analyzed as function of space beneath Mt. Etna during the intense lateral eruption of July–August 2001. The data used (August 1999–August 2001), subdivided in the pre-eruptive and eruption period, show significant space variations in the b value. For each of the two periods, a volume of anomalously high b value can be observed in the southeastern flank of the volcano. The anomalies located at 3 ± 1 km (b = 1.84 ± 0.20), and at about 1 ± 1 km (b = 2.11 ± 0.29) depth are interpreted as two different steps of a magma migration process ended with the July–August 2001 eruption. All the available geophysical evidences such as geodetic deformation measurements, focal mechanism and tomographic studies support this interpretation | en |
| dc.language.iso | English | en |
| dc.relation.ispartof | Geophysical Research Letters | en |
| dc.relation.ispartofseries | /32 (2005) | en |
| dc.subject | Mt Etna, bvalue, eruption | en |
| dc.title | Mapping of the b value anomalies beneath Mt. Etna, Italy, during July–August 2001 lateral eruption | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | L05309 | en |
| dc.identifier.doi | 10.1029/2004GL021545 | en |
| dc.relation.references | Aki, K. (1965), Maximum likelihood estimate of b in the formula log N = a b M and its confidence limits, Bull. Earthquake Res. Inst. Univ. Tokyo, 43, 237– 239. Behncke, B., and M. Neri (2003), The July –August 2001 eruption of Mt. Etna (Sicily), Bull. Volcanol, 65, 461– 476, doi:10.1007/s00445- 003-0274-1. Bender, B. (1983), Maximum likelihood estimation of b values for magnitude grouped data, Bull. Seismol. Soc. Am., 73, 831– 851. Bonaccorso, A., and D. Patane` (2001), Shear response to an intrusive episode at Mt. Etna volcano (January 1998) inferred through seismic and tilt data, Tectonophysics, 334, 61–75. Bonaccorso, A., M. Aloisi, and M. Mattia (2002), Dike emplacement forerunning the Etna July 2001 eruption modeled through continuous tilt and GPS data, Geophys. Res. Lett., 29(13), 1624, doi:10.1029/ 2001GL014397. Bonaccorso, A., S. D’Amico, M. Mattia, and D. Patane` (2004), Intrusive mechanism at Mt. Etna forerunning the July–August 2001 eruption from seismic and ground deformation data, Pure Appl. Geophys., 161, 1469– 1487, doi:10.1007/s00024-004-2515-4. Caracausi, A., R. Favara, S. Giammanco, F. Italiano, A. Paonita, G. Pecoraino, A. Rizzo, and P. M. Nuccio (2003), Mt. Etna: Geochemical signals of magma ascent and unusually extensive plumbing system, Geophys. Res. Lett., 30(2), 1057, doi:10.1029/2002GL015463. Chiarabba, C., P. De Gori, and D. Patane` (2004), The Mt. Etna plumbing system: The contribution of Seismic tomography, in Mt. Etna: Volcano Laboratory, Geophys. Monogr. Ser., vol. 143, edited by A. Bonaccorso et al., pp. 191– 204, AGU, Washington, D. C. Gutenberg, B., and C. F. Richter (1944), Frequency of earthquakes in California, Bull. Seismol. Soc. Am., 34, 185–188. Ishimoto, M., and K. Iida (1939), Observations of earthquakes registered with the microseismograph constructed recently, Bull. Earthquake Res. Inst. Tokyo Univ., 17, 443– 478. Mogi, K. (1962), Magnitude-frequency relation for elastic shocks accompanying fracture of various materials and some related problems in earthquakes, Bull. Earthquake Res. Inst. Univ. Tokyo, 40, 831–853. Murru, M., C. Montuori, M. Wyss, and E. Privitera (1999), The locations of magma chambers at Mt. Etna, Italy, mapped by b values, Geophys. Res. Lett., 26, 2553–2556. Musumeci, C., O. Cocina, P. De Gori, and D. Patane` (2004), Seismological evidence of stress induced by dike injection during the 2001 Mt. Etna eruption, Geophys. Res. Lett., 31, L07617, doi:10.1029/2003GL019367. Patane`, D., C. Chiarabba, O. Cocina, P. De Gori, M. Moretti, and E. Boschi (2002), Tomographic images and 3D earthquake locations of the seismic swarm preceding the 2001 Mt. Etna eruption: Evidence for a dike intrusion, Geophys. Res. Lett., 29(10), 1497, doi:10.1029/2001GL014391. Patane`, D., P. De Gori, C. Chiarabba, and A. Bonaccorso (2003), Magma ascent and the pressurization of Mt. Etna’s volcanic system, Science, 299, 2061– 2063. Scholz, C. H. (1968), The frequency-magnitude relation of micro fracturing in rock and its relation to earthquakes, Bull. Seismol. Soc. Am., 58, 339– 415. Schorlemmer, D., G. Neri, S. Wiemer, and A. Mostaccio (2003), Stability and significance tests for b-value anomalies: Example from the Tyrrhenian Sea, Geophys. Res. Lett., 30(16), 1835, doi:10.1029/2003GL017335. Shi, Y., and B. Bolt (1982), The standard error of the magnitude frequency b value, Bull. Seismol. Soc. Am., 72, 1677– 1687. Tanguy, J. C., M. Condomines, and G. Kieffer (1997), Evolution of the Mt. Etna magma: Constraints on the present feeding system and eruptive mechanism, J. Volcanol. Geotherm. Res., 75, 221– 250. Utsu, T. (1965), A method for determining the value of b in a formula log n = a bm showing the magnitude frequency for earthquakes, Geophys. Bull. Hokkaido Univ., 13, 99– 103. Utsu, T. (1992), On seismicity, in Mathematical Seismology (VII), Coop. Res. Rep. 34, pp. 139– 157, Inst. for Stat. Math., Tokyo. Warren, N. W., and G. V. Latham (1970), An experimental study of thermally induced microfracturing and its relation to volcanic seismicity, J. Geophys. Res., 75, 4455– 4464. Wiemer, S., and S. R. McNutt (1997), Variations in the frequency-magnitude distribution with depth in two volcanic areas: Mt. St. Helens,Washington, and Mt. Spurr, Alaska, Geophys. Res. Lett., 24, 189– 192. Wiemer, S., and M. Wyss (2000), Minimum magnitude of completeness in earthquake catalogs: Examples from Alaska, the western United States, and Japan, Bull. Seismol. Soc. Am., 90, 859–869. Wiemer, S., and M. Wyss (2002), Mapping spatial variability of the frequency-magnitude distribution of earthquakes, Adv. Geophys., 45, 259– 302. Wiemer, S., S. R. McNutt, and M. Wyss (1998), Temporal and threedimensional spatial analyses of the frequency-magnitude distribution near Long Valley Caldera, California, Geophys. J. Int., 134, 409– 421. Wyss, M., K. Shimazaki, and S. Wiemer (1997), Mapping active magma chambers by b values beneath the off-Ito volcano, Japan, J. Geophys. Res., 102, 20,413– 20,422. | en |
| dc.description.obiettivoSpecifico | 5V. Processi eruttivi e post-eruttivi | en |
| dc.description.journalType | JCR Journal | en |
| dc.contributor.author | Murru, Maura | en |
| dc.contributor.author | Montuori, Caterina | en |
| dc.contributor.author | Console, Rodolfo | en |
| dc.contributor.author | Lisi, Arianna | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, 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 Roma1, Roma, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
| crisitem.author.orcid | 0000-0002-7385-394X | - |
| crisitem.author.orcid | 0000-0001-8079-8451 | - |
| crisitem.author.orcid | 0000-0002-7194-9489 | - |
| 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.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 | - |
| Appears in Collections: | Article published / in press | |
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| File | Description | Size | Format | Existing users please Login |
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| 2005_GRL_Murru_Montuori_Console_Lisi.pdf | Manuscript | 177.13 kB | Adobe PDF |
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