Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/636
DC Field | Value | Language |
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dc.contributor.authorall | Dalla Via, G.; Università degli Studi di Milano, Dipartimento di Scienze della Terra, sezione di Geofisica | en |
dc.contributor.authorall | Sabadini, R.; Università degli Studi di Milano, Dipartimento di Scienze della Terra, sezione di Geofisica | en |
dc.contributor.authorall | De Natale, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Pingue, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.date.accessioned | 2006-01-26T11:43:01Z | en |
dc.date.available | 2006-01-26T11:43:01Z | en |
dc.date.issued | 2005 | en |
dc.identifier.uri | http://hdl.handle.net/2122/636 | en |
dc.description.abstract | Postseismic relaxation is modeled for the Irpinia earthquake, which struck southern Italy in 1980. Our goal is to understand the mechanism of surface deformation due to stress relaxation in the deep portion of the crust-lithosphere system for a shallow normal fault source and to infer the rheological properties of the lithosphere in the extensional environment of peninsular Italy. The modeling is carried out within the framework of our normal mode viscoelastic theory at high spatial resolution in order to accurately resolve the vertical surface displacements for a seismic source. The slip distribution over the faults is first inverted from coseismic leveling data, the misfit between observed and modeled vertical displacements being minimized by means of the L2 norm. Slip distribution is then used within the viscoelastic model to invert for the viscosities of the lower crust and generally of the lithosphere. Inversion is based on leveling data sampled along three lines crossing the epicentral area. Postseismic deformation in the Irpinia area is characterized by a broad region of crust upwarping in the footwall of the major fault and downwarping in the hanging wall that is responsible for the long-wavelength features of the vertical displacement pattern. The c2 analysis indicates that the Irpinia earthquake cannot constrain the rheology of the upper mantle but only of the crust; a full search in the viscosity spaces makes it possible to constrain the crustal viscosity to values of the order of 1019 Pa s, in agreement with previous studies carried out in different tectonic environments. | en |
dc.format.extent | 419 bytes | en |
dc.format.extent | 623618 bytes | en |
dc.format.mimetype | text/html | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.publisher.name | American Geophysical Union | en |
dc.relation.ispartof | Journal of Geophysical Research | en |
dc.relation.ispartofseries | 110, B06311 | en |
dc.subject | Lithospheric rheology | en |
dc.subject | Irpinia earthquake | en |
dc.title | Lithospheric rheology in southern Italy inferred from postseismic viscoelastic relaxation following the 1980 Irpinia earthquake | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 1-16 | en |
dc.identifier.URL | www.agu.org | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.05. Rheology | en |
dc.subject.INGV | 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics | en |
dc.subject.INGV | 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress | en |
dc.identifier.doi | 10.1029/2004JB003539 | en |
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Bianco (2002), Ice mass loss in Antarctica and stiff lower mantle viscosity inferred from the long wavelength time dependent gravity field, Geophys. Res. Lett., 29(10), 1373, doi:10.1029/2001GL014016. Troise, C., G. De Natale, F. Pingue, and S. M. Petrazzuoli (1998), Evidence for static stress interaction among earthquakes in the south-central Apennines (Italy), Geophys. J. Int., 134(3), 809–817, doi:10.1046/j.1365 246x.1998.00610.x. Wessel, P., and W. H. F. Smith (1990), Gridding with continuos curvature splines in tension, Geophysics, 55, 293– 305. Wessel, P., and W. H. F. Smith (1998), New, improved version of Generic Mapping Tools released, Eos Trans. AGU, 79(47), 579. Westaway, R. (1992), Seismic moment summation for historical earthquakes in Italy: Tectonic implications, J. Geophys. Res., 97, 15,437– 15,464. | en |
dc.description.fulltext | partially_open | en |
dc.contributor.author | Dalla Via, G. | en |
dc.contributor.author | Sabadini, R. | en |
dc.contributor.author | De Natale, G. | en |
dc.contributor.author | Pingue, F. | en |
dc.contributor.department | Università degli Studi di Milano, Dipartimento di Scienze della Terra, sezione di Geofisica | en |
dc.contributor.department | Università degli Studi di Milano, Dipartimento di Scienze della Terra, sezione di Geofisica | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, 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 OV, Napoli, Italia | - |
crisitem.author.dept | Universit`a di Milano - Milan, Italy | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
crisitem.author.orcid | 0000-0003-2241-9892 | - |
crisitem.author.orcid | 0000-0001-8391-2846 | - |
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 | - |
Appears in Collections: | Article published / in press |
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