Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7980
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dc.contributor.authorallPondrelli, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.authorallMargheriti, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italiaen
dc.contributor.authorallBaccheschi, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italiaen
dc.contributor.authorallPiana Agostinetti, N.; Osservatorio Ximeniano, Firenzeen
dc.contributor.authorallPiccinini, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italiaen
dc.contributor.authorallPlomerova, J.; Geophysical Institute, Praga, Rep. Cecaen
dc.contributor.authorallAmato, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italiaen
dc.contributor.authorallPark, J.; Yale University, New Haven, USAen
dc.contributor.authorallBrandon, M.; Yale University, New Haven, USAen
dc.contributor.authorallRETREAT Seismology Team; INGVen
dc.date.accessioned2012-06-07T16:08:39Zen
dc.date.available2012-06-07T16:08:39Zen
dc.date.issued2005-04-24en
dc.identifier.urihttp://hdl.handle.net/2122/7980en
dc.description.abstractWe performed three-dimensional analysis of anisotropic parameters of body waves to develop a 3D self-consistent dynamic model of the syn-convergent extension in the Northern Apennines within the multidisciplinary project RETREAT. Simultaneous extension within the convergent margin can be the consequence of the retreat of the subducting Adriatic plate from the orogenic front, caused by sub-lithosphere mantle processes that seismic anisotropy can help to decipher. We use data recorded by the RETREAT temporary array consisting of 35 stations complemented by data of permanent INGV observatories. Currently, 18-months of data are available from some stations, representing half of the passive experiment duration. We detect many examples of core-refracted shear-wave splitting within the upper mantle, and observe both distinct lateral variations of anisotropic parameters and their dependence on the direction of propagation. In particular, the fast shear-wave polarization changes from slab-perpendicular to slab-parallel along the Apennines chain. There is also a distinct change in the anisotropic signals across the presumed boundary of the Tyrrhenian and Adriatic micro-plates. Variations of the splitting time delays and orientation of the fast shear waves, together with considerations on the geodynamics of the area, seem to exclude simple sub-lithosphere mantle corner flow as the only source of the observed anisotropy. Alternate models include (1) a frozen-in fabric of different lithosphere domains, and (2) complex mantle flow associated with the Plio-Pleisocene uplift and extension of Tuscany.en
dc.language.isoEnglishen
dc.relation.ispartofEGU-European Geosciences Unionen
dc.subjectanisotropyen
dc.subjectSKS shear wave splittingen
dc.subjectNorthern Apenninesen
dc.titleLateral Changes of seismic anisotropy in the upper mantle around the Northern Apenninesen
dc.typePoster sessionen
dc.description.statusPublisheden
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropyen
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysisen
dc.subject.INGV04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamicsen
dc.subject.INGV04. Solid Earth::04.07. Tectonophysics::04.07.06. Subduction related processesen
dc.description.ConferenceLocationViennaen
dc.description.obiettivoSpecifico3.3. Geodinamica e struttura dell'interno della Terraen
dc.description.fulltextopenen
dc.contributor.authorPondrelli, S.en
dc.contributor.authorMargheriti, L.en
dc.contributor.authorBaccheschi, P.en
dc.contributor.authorPiana Agostinetti, N.en
dc.contributor.authorPiccinini, D.en
dc.contributor.authorPlomerova, J.en
dc.contributor.authorAmato, A.en
dc.contributor.authorPark, J.en
dc.contributor.authorBrandon, M.en
dc.contributor.authorRETREAT Seismology Teamen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italiaen
dc.contributor.departmentOsservatorio Ximeniano, Firenzeen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italiaen
dc.contributor.departmentGeophysical Institute, Praga, Rep. Cecaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italiaen
dc.contributor.departmentYale University, New Haven, USAen
dc.contributor.departmentYale University, New Haven, USAen
dc.contributor.departmentINGVen
item.openairetypePoster session-
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 Bologna, Bologna, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia-
crisitem.author.deptGeophysical Institute, Czech Academy of Sciences, Czech Republic-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia-
crisitem.author.deptYale University, Dept. of Geology and Geophysics, New Haven, USA-
crisitem.author.dept0-
crisitem.author.orcid0000-0002-0851-7405-
crisitem.author.orcid0000-0003-3853-254X-
crisitem.author.orcid0000-0001-5383-7945-
crisitem.author.orcid0000-0002-1826-646X-
crisitem.author.orcid0000-0002-9521-6570-
crisitem.author.orcid0000-0002-2117-7118-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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