Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/11788
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dc.date.accessioned2018-05-02T06:57:11Zen
dc.date.available2018-05-02T06:57:11Zen
dc.date.issued2017en
dc.identifier.urihttp://hdl.handle.net/2122/11788en
dc.description.abstractA set of horizontal to vertical spectral ratio (HVSR) and multichannel analysis of surface waves (MASW) measurements, carried out in the Altavilla Milicia (Sicily) area, is analyzed to test a geological model of the area. Statistical techniques have been used in different stages of the data analysis, to optimize the reliability of the information extracted from geophysical measurements. In particular, cluster analysis algorithms have been implemented to select the time windows of the microseismic signal to be used for calculating the spectral ratio H/V and to identify sets of spectral ratio peaks likely caused by the same underground structures. Using results of reflection seismic lines, typical values of P-wave and S-wave velocity were estimated for each geological formation present in the area. These were used to narrow down the research space of parameters for the HVSR interpretation. MASW profiles have been carried out close to each HVSR measuring point, provided the parameters of the shallower layers for the HVSR models. MASW inversion has been constrained by extrapolating thicknesses from a known stratigraphic sequence. Preliminary 1D seismic models were obtained by adding deeper layers to models that resulted from MASW inversion. These justify the peaks of the HVSR curves due to layers deeper than MASW investigation depth. Furthermore, much deeper layers were included in the HVSR model, as suggested by geological setting and stratigraphic sequence. This choice was made considering that these latter layers do not generate other HVSR peaks and do not significantly affect the misfit. The starting models have been used to limit the starting research space for a more accurate interpretation, made considering the noise as a superposition of Rayleigh and Love waves. Results allowed to recognize four main seismic layers and to associate them to the main stratigraphic successions. The lateral correlation of seismic velocity models, joined with tectonic evidences, allowed to plot two geological sections, showing the main pattern of geological formations and tectonic structures. © 2016 Sinopec Geophysical Research Institute.en
dc.language.isoEnglishen
dc.relation.ispartofJournal of Geophysics and Engineeringen
dc.relation.ispartofseries/14 (2017)en
dc.titleAssessment of a geological model by surface wave analysesen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber159 – 172en
dc.identifier.doi10.1088/1742-2140/14/1/159en
dc.description.obiettivoSpecifico4T. Sismologia, geofisica e geologia per l'ingegneria sismicaen
dc.description.journalTypeJCR Journalen
dc.contributor.authorMartorana, R.en
dc.contributor.authorCapizzi, P.en
dc.contributor.authorAvellone, G.en
dc.contributor.authorD'Alessandro, Antoninoen
dc.contributor.authorSiragusa, R.en
dc.contributor.authorLuzio, D.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptUniversità di Palermo-
crisitem.author.deptUniversità di Palermo-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia-
crisitem.author.deptUniversità degli Studi di Palermo, CFTA, Palermo-
crisitem.author.orcid0000-0002-8750-6105-
crisitem.author.orcid0000-0002-0074-3125-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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