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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1129
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dc.contributor.authorallMegna, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallBarba, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallSantini, S.; Istituto di Fisica, Università degli Studi di Urbino, Italyen
dc.date.accessioned2006-04-20T11:05:05Zen
dc.date.available2006-04-20T11:05:05Zen
dc.date.issued2005-12en
dc.identifier.urihttp://hdl.handle.net/2122/1129en
dc.description.abstractWe compute displacement and stress due to a normal fault by means of two-dimensional plane-strain finite-element analysis. To do so, we apply a system of forces to the fault nodes and develop an iterative algorithm serving to determine the force magnitudes for any slip distribution. As a sample case, we compute the force magnitudes assuming uniform slip on a 10-km two-dimensional normal fault. The numerical model generates displacement and stress fields that compare well with the analytical solution. In fact, we found little difference in displacements (<5%), displacement orientation (<15°), and stress components (<35%, half of which due to slip tolerance). We analyze such misfit, and discuss how the error propagates from displacement to stress. Our scheme provides a convenient way to use the finite-elements direct method in a trial-and-error procedure to reproduce any smooth slip distribution.en
dc.format.extent2185283 bytesen
dc.format.mimetypeapplication/pdfen
dc.language.isoEnglishen
dc.relation.ispartofAnnals of Geophysicsen
dc.relation.ispartofseries6/48 (2005)en
dc.subjectalgorithmsen
dc.subjectearthquakesen
dc.subjectfaultsen
dc.subjecttheoretical studiesen
dc.subjectnumerical modelsen
dc.subjectanalytical modelsen
dc.subjectdisplacementsen
dc.subjectstressen
dc.titleNormal-fault stress and displacement through finite-element analysisen
dc.typearticleen
dc.type.QualityControlPeer-revieweden
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniquesen
dc.subject.INGV05. General::05.01. Computational geophysics::05.01.05. Algorithms and implementationen
dc.relation.referencesARMIGLIATO, A. and S. TINTI (2003): Influence of topography on coseismic displacements induced by the Friuli 1976 and the Irpinia 1980 earthquakes (Italy) analyzed through a two-dimensional hybrid model, J. Geophys. Res., 108, 2552, doi: 10.1029/2002JB002027. ARMIGLIATO, A., S. TINTI and A. MANUCCI (2003a): Self-induced deformation on the fault plane during an earthquake, Part I. Continuous normal displacements, Pure Appl. Geophys., 160, 1651-1678. ARMIGLIATO, A., S. TINTI and A. MANUCCI (2003b): Self-induced deformation on the fault plane during an earthquake, Part II. Continuous tangential displacements, Pure. Appl. Geophys., 160, 1679-1693. BARBA, S. (1999): Studio dei meccanismi di deformazione della regione italiana: vincoli geologici, geofisici e modellazione geodinamica, Ph.D. Dissertation (Università «La Sapienza», Roma), pp. 100 (deposited in Earth-Prints, www.earth-prints.org, http://hdl.handle.net/2122/367). BARBA, S., and R. BASILI (2000): Analysis of seismological and geological observations for moderate-size earthquakes: the Colfiorito Fault System (Central Apennines, Italy), Geophys. J. Int., 141 (1), 241-252. BEN-MENAHEM, A. and A. GILLON (1970): Crustal deformations by earthquakes and explosions, Bull. Seismol. Soc. Am., 60, 193-215. BIELAK, J., K. LOUKAKIS, Y. HISADA and C. YOSHIMURA (2003): Domain reduction method for three-dimensional earthquake modeling in localized regions, Part I. Theory, Bull. Seismol. Soc. Am., 93, 817-824. BONAFEDE, M. and A. NERI (2000): Effects induced by an earthquake on its fault palne: a boundary element study, Geophys. J. Int., 141, 43-56. BONAFEDE, M., B. PARENTI and E. RIVALTA (2002): On strike-slip faulting in layered media, Geophys. J. Int., 149, 698-723. BUSTIN, A., R.D. HYNDMAN, A. LAMBERT, J. RISTAU, J. HE, H. DRAGERT and M. VAN DER KOOIJ (2004): Fault parameters of the Nisqually earthquake determined from moment tensor solutions and the surface deformation from GPS and InSAR, Bull. Seismol. Soc. Am., 94, 363-376. CARMINATI, E., F. TONIOLO AUGIER and S. BARBA (2001): Dynamic modelling of stress accumulation in the Central Italy: role of structural heterogeneities and rheology, Geophys. J. Int., 144, 373-390. CATTIN, R., P. BRIOLE, H. LYON-CAHEN, P. BERNARD and P. PINETTES (1999): Effects of superficial layers on coseismic displacements for a dip-slip fault and geophysical implications, Geophys. J. Int., 137, 149-158. DRAGONI, M., M. BONAFEDE and E. BOSCHI (1986): Shallow earthquakes in a viscoelastic shear zone with depth-dependent friction and rheology, Geophys. J. R. Astron. Soc., 86, 617-633. MA, X.Q. and N.J. KUSZNIR (1995): Coseismic and postseismic subsurface displacements and trains for dipslip normal fault in a three-layer, J. Geophys. Res., 100, 12,813-12,828. MASTERLARK, T. and H.F. WANG (2002): Transient stresscoupling between the 1992 Landers and 1999 Hector Mine, California, earthquakes, Bull. Seismol. Soc. Am., 92, 1470-1486. MELOSH, H.J. and A. RAEFSKY (1981): A simple and efficient method for introducing faults into finite element computations, Bull. Seismol. Soc. Am., 71, 1391-1400. MORELLI, A., M. BONAFEDE and M. DRAGONI (1987): Twodimensional crack model of faulting in a layered elastic half-space, Ann. Geophysicae, 5B, 281-288. MSC.SOFTWARE (2005): MSC.Software Corporation – 40 Years of Virtual Product Development Expertise, 12 October 2005 (on line: http://www.mscsoftware.com/). OKADA, Y. (1992): Internal deformation due to shear and tensile faults in a haft-space, Bull. Seismol. Soc. Am., 82, 1018-1040. POLLITZ, F.F. (1997): Gravitational viscoelastic postseismic relaxation on a layered spherical Earth, J. Geophys. Res., 102, 17,921-17,941. RYBICKI, K. (1971): The elastic residual field of a very long strike-slip fault in the presence of a discontinuity, Bull. Seismol. Soc. Am., 61, 79-92. SATO, R. and M. MATSU’URA (1973): Static deformation due to the fault spreading over several layer in a multi-layered medium, Part I. Displacement, J. Phys. Earth, 21, 227-249. SAVAGE, J.C. (1998): Displacement field for an edge dislocation in a layered half-space, J. Geophys. Res., 103, 2439-2446. TINTI, S. and A. ARMIGLIATO (2002): A2D hybrid technique to model the effect of topography on coseismic displacements. Application to the Umbria-Marche (Central Italy) 1997 earthquake sequence, Geophys. J. Int., 150, 542-557. WANG, R., F.L. MARTIN and F. ROTH (2003): Computation of deformation induced earthquakes in a multi-layered elastic crust – FORTRAN programs EDGRN/EDCMP, Comput. Geosci., 29, 195-207. ZHAO, S., R.D. MÜLLER, Y. TAKAHASHI and Y. KANEDA (2004): 3-D finite-element modelling of deformation and stress associated with faulting: effect of inhomogeneous crustal structures, Geophys. J. Int., 157, 629- 644, doi: 10.1111/j.1365-246X.2004.02200.x.en
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorMegna, A.en
dc.contributor.authorBarba, S.en
dc.contributor.authorSantini, S.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.orcid0000-0002-3536-1805-
crisitem.author.orcid0000-0001-7965-6667-
crisitem.author.orcid0000-0003-4494-1251-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent05. General-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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