Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/8027| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Bressan, G.; Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Cussignacco (UD), Italy | en |
| dc.contributor.authorall | Gentile, G. F.; Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Cussignacco (UD), Italy | en |
| dc.contributor.authorall | Tondi, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia | en |
| dc.contributor.authorall | de Franco, R.; Consiglio Nazionale delle Ricerche, Ist. Dinamica dei Processi Ambientali, Milano, Italy | en |
| dc.contributor.authorall | Urban, S.; Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Cussignacco (UD), Italy | en |
| dc.date.accessioned | 2012-08-23T12:42:06Z | en |
| dc.date.available | 2012-08-23T12:42:06Z | en |
| dc.date.issued | 2012-06 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/8027 | en |
| dc.description.abstract | The three-dimensional pattern of elastic moduli (bulk modulus, Young modulus, shear modulus) of the upper crust (0-10 km depth) has been determined in the Friuli area (north-eastern Italy) from the 3D Vp, Vp/Vs and density structures. Firstly, 3D Pwave velocity and P to S velocity ratio were modeled by joint inversion for hypocentres and velocity structure. Then, we apply the tomographic inversion method of Sequential Integrated Inversion (SII) to recover the three dimensional density structure. The pattern of the elastic moduli is characterized by marked lateral and depth variations that reflect the geologic-structural heterogeneity of the area, produced by the superposition of several tectonic phases with different orientations of the principal axes of stress. The bulk (K), Young (E) and shear (G) moduli image a high rigidity body with an irregular shape, at 4-8 km depth. The body is characterized by G ≥ 3.2·1010 N·m-2, K ≥ 6.8·1010 N·m-2 and E ≥ 8.4·1010 N·m-2 and is associated to platform limestones and dolomitic rocks. The seismicity is mainly located along the sharp variations of the moduli pattern, in or adjacent to high rigidity zones. The most severe earthquakes (ML between 4.5 and 6.4), occurred in the study area from 1976 to the present day, are located in a transition zone from high to low rigidity patterns. Our interpretation is that the elastic moduli variations, closely related to variability in rock mechanical properties, influence the occurrence of earthquakes by processes of stress concentrations. The values of the elastic moduli recently obtained from laboratory measurements on the main lithologic units fall in the middlehigh range of the values obtained with the present investigation. Keywords: Seismic tomography, gravity anomalies, seismicity, elastic moduli, Friuli, NE Italy | en |
| dc.language.iso | English | en |
| dc.publisher.name | Istituto Nazionale di Oceanografia e di Geofisica Sperimentale-OGS | en |
| dc.relation.ispartof | Bollettino di Geofisica Teorica ed Applicata | en |
| dc.relation.ispartofseries | 2/53 (2012) | en |
| dc.subject | Seismic tomography | en |
| dc.subject | gravity anomalies | en |
| dc.subject | seismicity | en |
| dc.subject | elastic moduli | en |
| dc.subject | Friuli | en |
| dc.subject | NE Italy | en |
| dc.title | Sequential integrated inversion of tomographic images and gravity data: an application to the Friuli area (Northeastern Italy) | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 191-212 | en |
| dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.04. Mineral physics and properties of rocks | en |
| dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.02. Gravity methods | en |
| dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.06. Seismic methods | en |
| dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy | en |
| dc.identifier.doi | 10.4430/bgta0059 | en |
| dc.relation.references | Bajc J., Aoudia A., Saraò A. and Suhadolc P.; 2001: The 1998 Bovec-Krn mountain (Slovenia) earthquake. Geophys. Res. Lett., 28, 1839-1842. Bressan G., Bragato P.L. and Venturini C.; 2003: Stress and strain tensors based on focal mechanisms in the seismotectonic framework of the Friuli-Venezia Giulia region (Northeastern Italy). Bull. Seismol. Soc. Am., 93, 1280-1297. Bressan G., Gentile G.F., Perniola B. and Urban S.; 2009: The 1998 and 2004 Bovec-Krn (Slovenia) seismic sequences: Aftershock pattern, focal mechanisms and static stress changes. Geophys. J. Int., 179, 231-253. Brückl E., Bleibinhaus F., Gosar A., Grad M., Guterch A., Hrubcova P., Keller G.R., Majdan´ski M., Sˇumanovac F., Tiira T., Yliniemi J., Hegedüs E. and Thybo H.; 2007: Crustal structure due to collisional and escape tectonics in the Eastern Alps region based on profiles Alp01 and Alp02 from the ALP 2002 seismic experiment. J. Geophys. Res., 112, B06308, doi: 10.1029/2006JB004687. Carulli G.B. and Ponton M.; 1988: Interpretazione strutturale profonda della Alpi Carniche centrali. Rend. Soc. Geol. It., 11, 251-252. Carulli G.B. and Ponton M.; 1992: Interpretazione strutturale profonda del settore centrale carnico-friulano. Studi Geol. Camerti, 2, 275-284. Cassano E., Maino A., Amadei G., Cesi C., Salvadei R., Ventura R., Visicchio F., Zanoletti F., Paulucci G. and Todisco A.; 1989: Carta gravimetrica di Italia scala 1:100.000. Servizio Geologico, Poligrafico e Zecca dello Stato, Roma, Italy. Chatterjee R. and Mukhopadhyay M.; 2002: Effects of rock mechanical properties on local stress field of the Mahanadi basin, India – results from finite element modelling. Geophys. Res. Lett., 29, 1533, doi: 10.1029/2001GL013447. de Franco R., Bressan G. and Gentile G.F.; 2004: Elastic moduli and seismogenic aspects of the Friuli upper crust. Boll. Geof. Teor. Appl., 45, 71-87. Domenico S.N.; 1984: Rock lithology and porosity determination from shear and compressional wave velocity. Geophysics, 49, 1188-1195. Eberhart-Phillips D.; 1986: Three-dimensional velocity structure in Northern California Coast ranges from inversion of local earthquake arrival times. Bull. Seismol. Soc. Am., 76, 1025-1052. Eberhart-Phillips D. and Reyners M.; 1997: Continental subduction and three-dimensional crustal structure: The Northern South Island, New Zealand. J. Geophys. Res., 100, 12919-12936. Evans J.R., Eberhart-Phillips D. and Thurber C.H.; 1994: User’s manual for SIMULPS12 for imaging Vp and Vp/Vs: A derivative of the “Thurber” tomographic inversion SIMUL3 for local earthquakes and explosions. U.S.G.S., Open File Report, 94-931, 101 pp. Faccenda M., Bressan G. and Burlini L.; 2007: Seismic properties of the upper crust in the central Friuli area (northeastern Italy) based on petrophysical data. Tectonophys., 445, 210-226. Gentile G.F., Bressan G., Burlini L. and de Franco R.; 2000: Three–dimensional Vp and Vp/Vs models of the upper crust in the Friuli area (Northeastern Italy). Geophys. J. Int., 141, 457-478. Hauksson E. and Haase J.S.; 1997: Three-dimensional Vp and Vp/Vs velocity models of the Los Angeles basin and central Transverse Ranges, California. J. Geophys. Res., 102, 5423-5433. Husen S., Kissling E. and Flueh E.R.; 2000: Local earthquake tomography of shallow subduction in north Chile: A combined onshore and offshore study. J. Geophys. Res., 105, 23183-23198. Kaypak B.; 2008: Three-dimensional Vp and Vp/Vs structure of the upper crust in the Erzincan basin (eastern Turkey). J. Geophys. Res., 113, B07307, doi: 10.1029/2006JB004905. Koulakov I., Bindi D., Parolai S., Grosser H. and Milkereit C.; 2010: Distribution of seismic velocities and attenuation in the crust beneath the North Anatolian Fault (Turkey) from local earthquake tomography. Bull. Seismol. Soc. Am., 100, 207-224. Lee W.H.K. and Lahr J.C.; 1975: HYPO71 (revised): A computer program for determining hypocenter, magnitude and first motion pattern of local earthquakes. U.S.G.S., Open File Report, 75-311, 113 pp. Maxwell S.C. and Young R.P.; 1992: Sequential velocity imaging and microseismic monitoring of mining-induced stress change. Pageoph., 139, 421-447. Merlini S., Doglioni C., Fantoni R. and Ponton M.; 2002: Analisi strutturale lungo un profilo geologico tra la linea Fella-Sava e l’avampaese adriatico (Friuli Venezia Giulia – Italia). Mem. Soc. Geol. It., 57, 293-300. Michelini A. and McEvilly T.V.; 1991: Seismological studies at Parkfield, 1. Simultaneous inversion for velocity structure and hypocenters using cubic b-splines parameterization. Bull. Seismol. Soc. Am., 81, 524-552. Miller D.S. and Smith R.B.; 1999: P and S velocity structure of the Yellowstone volcanic field from local earthquake and controlled-source tomography. J. Geophys. Res., 104, 15105-15121. Mjelde R., Raum T., Digranes P., Shimamura H., Shiobara H. and Kodaira S.; 2003: Vp/Vs ratio along the Vøring Margin, NE Atlantic, derived from OBS data: Implications on lithology and stress field. Tectonophys., 369, 175- 197. Nataf H.C. and Ricard Y.; 1996: 3SMAC: an a priori tomographic model of the upper mantle based on geophysical modeling. Phys. Earth Planet. Inter., 95, 101-122, doi: 10.1016/0031-9201(95)03105-7. O’Connell R.J. and Budiansky B.; 1974: Seismic velocities in dry and saturated cracked solids. J. Geophys. Res., 35, 5412-5426. Pohànka V.; 1998: Optimum expression for computation of the gravity field of a polihedral body with linearly varying density. Geophys. Prospect., 46, 391-404, doi: 10.1046/j.1365-2478.1998.960335.x. Poli M.E., Peruzza L., Rebez A., Renner G., Slejko D. and Zanferrari A.; 2002: New seismotectonic evidence from the analysis of the 1976-1977 and 1977-1999 seismicity in Friuli (NE Italy). Boll. Geof. Teor. Appl., 43, 53-78. Powell C.A., Withers M.M., DeShon H.R. and Dunn M.M.; 2010: Intrusions and anomalous Vp/Vs ratios associated in the New madrid seismic zone. J. Geophys. Res., 115, B08311, doi: 10.1029/2009JB007107. Rebez A. and Renner G.; 1991: Duration magnitude for the northeastern Italy seismometric network. Boll. Geof. Teor. Appl., 33, 177-186. Reyners M., Eberhart-Phillips D., Stuart G. and Nishimura Y.; 2006: Imaging suduction from the trench to 300 km depth beneath the central North Island Zealand, with Vp and Vp/Vs. Geophys. J. Int., 165, 565-583. Scarascia S. and Cassinis R.; 1997: Crustal structures in the central-eastern Alpine sector: a revision of the available DSS data. Tectonophys., 271, 157-188. Slejko D., Carulli G.B., Nicolich R., Rebez A., Zanferrari A., Cavallin A., Doglioni C., Carraro F., Castaldini D., Iliceto V., Semenza E. and Zanolla C.; 1989: Seismotectonics of the Eastern Southern-Alps: A review. Boll. Geof. Teor. Appl., 31, 109-136. Slejko D., Neri G., Orozova I., Renner G. and Wyss M.; 1999: Stress field in Friuli (NE Italy) from fault plane solutions of activity following the 1976 main shock. Bull. Seismol. Soc. Am., 89, 1037-1052. Tarantola A.; 2005: Inverse problem theory and methods for model parameter estimation. SIAM, Philadelphia, PA, USA, 342 pp. Tatham R.H.; 1982: Vp/Vs and lithology. Geophys., 47, 336-344. Thurber C.H.; 1983: Earthquake locations and three-dimensional crustal structure in the Coyote lake area, Central California. J. Geophys. Res., 88, 8226-8236. Thurber C.H.; 1993: Local earthquake tomography: Velocities and Vp/Vs – theory. In: Iyier H.M. and Hirahara K. (eds), Seismic tomography: Theory and practice, Chapman and Hall, London, UK, pp. 563-583. Tondi R. and de Franco R.; 2006: Accurate assessment of 3D crustal velocity and density parameters: Application to Vesuvius data sets. Phys. Earth Planet. Inter., 159, 183-201, doi: 10.1016/j.pepi.2006.07.001. Um J. and Thurber C.H.; 1987: A fast algorithm for two-point seismic ray tracing. Bull. Seismol. Soc. Am., 77, 972- 986. Venturini C.; 1991: Cinematica neogenico-quaternaria del Sudalpino orientale (settore friulano). Studi Geol. Camerti, Vol. Spec., pp. 109-116. Venturini C. and Carulli G.B.; 2002: Neoalpine structural evolution of the carnic Alps central core (Mt. Amariana, Mt. Plauris, Mt. San Simeone). Mem. Soc. Geol. It., 57, 273-281. Venturini S.; 2002: Il pozzo Cargnacco 1: un punto di taratura stratigrafica nella pianura friulana. Mem. Soc. Geol. It., 57, 11-18. Vlahovic G. and Powell C.A.; 2001: Three-dimensional S wave velocity structure and Vp/Vs ratios in the New Madrid Seismic zone. J. Geophys. Res., 106, 13501-13513. Zhao D. and Negishi H.; 1998: The 1995 Kobe earthquake: Seismic image of the source zone and its implications for the rupture nucleation. J. Geophys. Res., 103, 9967-9986. Zˇivcˇicˇ M., Govoni A. and Costa G.; 2000: The 1998 Krn Mountains earthquake sequence. The combined data set of the URSG, OGS and DST temporary and permanent seismic networks (Apr. 12 - Dec. 31, 1998). CD-ROM, Geophys. Surv. Slovenia; Ist. Naz. Ocean. Geof. Sp.; Dip. Sci. Terra - Univ. Trieste. Zonno G. and Kind R.; 1984: Depth determination of north Italian earthquakes using Grafenberg data. Bull. Seismol. Soc. Am., 74, 1645-1659. | en |
| dc.description.obiettivoSpecifico | 3.3. Geodinamica e struttura dell'interno della Terra | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | restricted | en |
| dc.relation.issn | 0006-6729 | en |
| dc.contributor.author | Bressan, G. | en |
| dc.contributor.author | Gentile, G. F. | en |
| dc.contributor.author | Tondi, R. | en |
| dc.contributor.author | de Franco, R. | en |
| dc.contributor.author | Urban, S. | en |
| dc.contributor.department | Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Cussignacco (UD), Italy | en |
| dc.contributor.department | Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Cussignacco (UD), Italy | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia | en |
| dc.contributor.department | Consiglio Nazionale delle Ricerche, Ist. Dinamica dei Processi Ambientali, Milano, Italy | en |
| dc.contributor.department | Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Cussignacco (UD), Italy | 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 Oceanografia e di Geofisica Sperimentale, Cussignacco (UD), Italy | - |
| crisitem.author.dept | Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Cussignacco (UD), Italy | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia | - |
| crisitem.author.dept | Istituto Metodologie Analisi Ambientali CNR | - |
| crisitem.author.dept | Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Cussignacco (UD), Italy | - |
| crisitem.author.orcid | 0000-0001-9400-3904 | - |
| crisitem.author.orcid | 0000-0002-7037-2833 | - |
| 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.classification.parent | 04. Solid Earth | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| Appears in Collections: | Article published / in press | |
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