Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/11173
DC FieldValueLanguage
dc.date.accessioned2018-03-14T08:37:47Zen
dc.date.available2018-03-14T08:37:47Zen
dc.date.issued2017en
dc.identifier.urihttp://hdl.handle.net/2122/11173en
dc.description.abstractThis study deals with the impact of deep-soil discontinuities on ground-motion amplification in the Po alluvial basin (northern Italy), and consequently, on long-period probabilistic seismic hazard analysis estimates. The focus is on Castelleone, where a seismic station of the Italian National Seismic Network has been deployed since 2009. To define a detailed shear-wave velocity (VS) profile, extensive active and passive geophysical surveys were carried out. The active measurements included seismic profiles, examined through standard refraction techniques and multichannel analysis of surface waves. The passive methods included ambient vibration measurements in both single and array configurations. In particular, three microtremor arrays with increasing apertures were performed, to capture the experimental dispersion curve down to 0.2 Hz. The horizontal-to-vertical spectral ratio showed two main peaks, at 0.17 Hz and 0.70 Hz. A joint inversion of the experimental phase-velocity dispersion and horizontal-to-vertical spectral ratio curves was performed to obtain the Vs profile. The data show two main discontinuities at ~160 m and 1,350 m in depth. According to the Italian and European seismic codes, the shallow Vs discontinuity can be ascribed to the seismic bedrock (i.e., Vs >800 m/s), while the deeper one is observed at the transition between Pliocene–Quaternary deposits and Miocene marls. Preliminary site-specific seismic hazard analysis in terms of displacement response spectra for periods up to 10 s show that neglecting the effects of the deeper discontinuity implies underestimation in hazard estimates of up to about 49% for MRP of 475 years and about 57% for MRP of 2,475 years, with possible consequences on the design of very tall buildings and large bridges.en
dc.language.isoEnglishen
dc.relation.ispartofBulletin of the Seismological Society of Americaen
dc.relation.ispartofseries/107 (2017)en
dc.subjectlong-period amplificationen
dc.subjectambient vibration arrayen
dc.subjectvelocity profileen
dc.subjecthorizontal-to-vertical spectral ratioen
dc.subjectsite-specific PSHAen
dc.subjectpartially non-ergodic PSHAen
dc.subjectPo Plain (Italy)en
dc.titleLong‐Period Amplification in Deep Alluvial Basins and Consequences for Site‐Specific Probabilistic Seismic‐Hazard Analysis: An Example from the Po Plain (Northern Italy)en
dc.typearticleen
dc.description.statusPublisheden
dc.description.pagenumber770-786en
dc.identifier.URLhttps://www.researchgate.net/profile/Claudia_Mascandolaen
dc.identifier.doi10.1785/0120160166en
dc.description.obiettivoSpecifico4T. Sismologia, geofisica e geologia per l'ingegneria sismicaen
dc.description.journalTypeJCR Journalen
dc.contributor.authorMascandola, Claudiaen
dc.contributor.authorMassa, Marcoen
dc.contributor.authorBarani, Simoneen
dc.contributor.authorLovati, Saraen
dc.contributor.authorSantulin, Marcoen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italiaen
dc.contributor.departmentUniversità degli Studi di Genova, Dipartimento di Scienze della Terra dell’Ambiente e della Vita (DISTAV), Genova, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italia-
crisitem.author.deptDipTeRis Università di Genova-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italia-
crisitem.author.orcid0000-0003-1941-4679-
crisitem.author.orcid0000-0003-0696-2035-
crisitem.author.orcid0000-0002-2046-2152-
crisitem.author.orcid0000-0002-8068-1218-
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.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-
Appears in Collections:Article published / in press
Files in This Item:
File Description SizeFormat Existing users please Login
Mascandola_BSSA.pdf1.77 MBAdobe PDF
Show simple item record

WEB OF SCIENCETM
Citations 50

8
checked on Feb 10, 2021

Page view(s)

436
checked on Mar 27, 2024

Download(s)

15
checked on Mar 27, 2024

Google ScholarTM

Check

Altmetric