Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/15446
DC Field | Value | Language |
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dc.date.accessioned | 2022-02-24T11:31:51Z | - |
dc.date.available | 2022-02-24T11:31:51Z | - |
dc.date.issued | 2021-06-01 | - |
dc.identifier.uri | http://hdl.handle.net/2122/15446 | - |
dc.description.abstract | We used 1029 earthquakes, with magnitudes ranging from M 3.0 to M 6.5, located in central Apennines, Italy, and recorded by 414 local stations to study the variation of the quality factor QS of shear waves with depth. We first determined average nonparametric attenuation functions in the frequency band from 0.5 to 20 Hz and hypocenter distances less than 155 km to correct the observed acceleration spectra for attenuation effects. Then, we separated source and site effects from the corrected spectral records to determine the changes of QS with depth. We used a 1D local shear-wave velocity model to calculate the travel times of the source-station paths, and we inverted the observed spectra to determine QS in three different depth intervals (0–4 km, 4–10 km and 10–15 km) and five frequencies (0.5, 1, 4, 10 and 20 Hz). We found that QS increases with frequency at all depths considered and tends to have lower values at shallow depths. The average value of QS is consistent with previous studies made in central Italy and can be approximated by QS = 43f0.94. To describe the frequency dependence of QS with depth (H), we determine the following relations: QS = 5.5f1.39, 0.5 ≤ f ≤ 10 Hz and QS = 151.5, f > 10 Hz for 0–4 km, QS = 52f0.87 for 4 < H < 10 km and QS = 51f0.92 for 10 ≤ H ≤ 15 km. We conclude that the Q-depth-dependent model can be useful to improve estimates of source parameters and ground motion prediction in the central Apennines region of Italy. | en_US |
dc.language.iso | English | en_US |
dc.publisher.name | Springer | en_US |
dc.relation.ispartof | Pure and Applied Geophysics | en_US |
dc.relation.ispartofseries | /178 (2021) | en_US |
dc.title | Depth-Dependent Shear-Wave Attenuation in Central Apennines, Italy | en_US |
dc.type | article | en |
dc.description.status | Published | en_US |
dc.type.QualityControl | Peer-reviewed | en_US |
dc.description.pagenumber | 2059–2075 | en_US |
dc.subject.INGV | Solid earth | en_US |
dc.identifier.doi | 10.1007/s00024-021-02744-9 | en_US |
dc.description.obiettivoSpecifico | 5T. Sismologia, geofisica e geologia per l'ingegneria sismica | en_US |
dc.description.journalType | JCR Journal | en_US |
dc.relation.issn | 0033-4553 | en_US |
dc.contributor.author | Castro, Raúl R | - |
dc.contributor.author | Pacor, Francesca | - |
dc.contributor.author | Spallarossa, Daniele | - |
dc.contributor.department | CENTRO DE INVESTIGACIÓN CIENTÍFICA Y DE EDUCACIÓN SUPERIOR DE ENSENADA | en_US |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italia | en_US |
dc.contributor.department | Università di Genova | en_US |
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 | CICESE, División Ciencias de la Tierra, Departamento de Sismología, Ensenada, Baja California, México | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italia | - |
crisitem.author.dept | DipTeRis Università di Genova | - |
crisitem.author.orcid | 0000-0001-5745-0414 | - |
crisitem.author.orcid | 0000-0002-8021-3908 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
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eProofingCastroetal.pdf | Open Access accepted article (emb may-22) | 2.08 MB | Adobe PDF | View/Open |
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