Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1770
DC Field | Value | Language |
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dc.contributor.authorall | Alessandrini, B.; Istituto Nazionale di Geofisica, Roma, ltaly | en |
dc.contributor.authorall | Beranzoli, L.; Istituto Nazionale di Geofisica, Roma, ltaly | en |
dc.contributor.authorall | Mele, F. M.; Istituto Nazionale di Geofisica, Roma, ltaly | en |
dc.date.accessioned | 2006-09-29T10:23:43Z | en |
dc.date.available | 2006-09-29T10:23:43Z | en |
dc.date.issued | 1995-05 | en |
dc.identifier.uri | http://hdl.handle.net/2122/1770 | en |
dc.description.abstract | A tomographic experiment was performed in the Italian region using local and regional arrivaI times of p and S seismological phases selected from the Italian National Bulletin in the time interval 1984-1991. We deter- mined a 3-D crustal P-wave velocity model using a simultaneous inversion method that iteratively re1ocates the hypocenters and computes the unknown model parameters. A fast two-point ray tracing algorithm was adopted to compute the ray paths and travel times of P", S", P g' Sg phases with good accuracy. Synthetic tests were performed using the "true" hypocenter and station distribution to rough1y evaluate the extension of the areas most densely spanned by the ray paths; the agreement between synthetic and computed models is more satisfactory at Moho depths than in the upper crust. The qua1ity of the model resulting from inversion of real data is examined by the ca1culation of the Spread Function (Toomey and Foulger, 1989). The 3-D crustal P-wave velocity mode1 of the Italian region shows remarkab1e trends at Moho depths: the areas east of the Apennines call for positive adjustments of the initial velocity va1ue, while the west region shows negative ad- justments. The correspondence among the main features of the velocity field, the map of Moho isobaths and the map of the gravity anoma1ies is also outlined. | en |
dc.format.extent | 6703271 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartofseries | 2/38 (1995) | en |
dc.subject | inversion algorithms | en |
dc.subject | seismic tomography | en |
dc.subject | Moho structure | en |
dc.title | 3-D crustal P-wave velocity tomography of the Italian region using local and regional seismicity data | en |
dc.type | article | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Alessandrini, B. | en |
dc.contributor.author | Beranzoli, L. | en |
dc.contributor.author | Mele, F. M. | en |
dc.contributor.department | Istituto Nazionale di Geofisica, Roma, ltaly | en |
dc.contributor.department | Istituto Nazionale di Geofisica, Roma, ltaly | en |
dc.contributor.department | Istituto Nazionale di Geofisica, Roma, ltaly | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
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 ONT, Roma, Italia | - |
crisitem.author.orcid | 0000-0002-2273-3593 | - |
crisitem.author.orcid | 0000-0002-3680-7805 | - |
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 | - |
Appears in Collections: | Annals of Geophysics |
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File | Description | Size | Format | |
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05 alessandrini.pdf | 6.55 MB | Adobe PDF | View/Open |
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