@prefix adms: <http://www.w3.org/ns/adms#> .
@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dcatapit: <http://dati.gov.it/onto/dcatapit#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema: <http://schema.org/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix spdx: <http://spdx.org/rdf/terms#> .
@prefix time: <http://www.w3.org/2006/time> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xml: <http://www.w3.org/XML/1998/namespace> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.ingv.it/dataset/1157> a dcatapit:Dataset,
        dcat:Dataset ;
    dct:accrualPeriodicity <http://publications.europa.eu/resource/authority/frequency/NEVER> ;
    dct:creator [ a dcatapit:Agent,
                foaf:Agent ;
            dct:identifier "https://orcid.org/0000-0002-5042-0244#313" ;
            foaf:name "PETROSINO Simona [Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy]"@en,
                "PETROSINO Simona [Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy]"@it ] ;
    dct:description "DEMETRA – Dense Maccalube Tromino Acquisition – Horizontal-to-Vertical Spectral Ratio (HVSR) and Polarization Parameters nnDescription:This dataset contains Horizontal-to-Vertical Spectral Ratio (HVSR) curves and the polarization parameters from seismic noise recordings collected during the DEMETRA (DEnse MaccalubE TRomino Acquisition) field survey, which was conducted on 22–23 April 2025 at the Maccalube di Aragona mud volcanoes (Southern Italy).nnThe HVSR curves were computed using the Grilla Rel. 9.9.0 software package (https://www.tromino.it/frameset-grilla.htm), starting from the raw Tromino® recordings (https://doi.org/10.5281/zenodo.17617939) acquired at 21 sites (DMT01–DMT21). Each file in this dataset corresponds to one measurement point and is provided in ASCII format, containing both acquisition metadata and spectral quantities. The filename indicates the site ID (for example: HV_DMT_1.asc).nnPolarization parameters were estimated using the covariance matrix method, in two frequency bands: 0.2–1 Hz and 1–5 Hz. Each file corresponds to one measurement site and one frequency band. The filename indicates the site ID and the frequency band (for example: DMT01_pol_0.2_1Hz.dat; DMT01_pol_1_5Hz.dat).nnThe methodological details are described in:nnPetrosino, S., Madonia, P., Gucciardo, D., & Cusano, P. (2025).DEMETRA—A Seismic Noise Survey at the Maccalube di Aragona Mud Volcanoes (Southern Italy): Results and Perspectives. Sensors, 25(22), 6975.DOI: https://doi.org/10.3390/s25226975" ;
    dct:identifier "10.5281/zenodo.17618076" ;
    dct:issued "2025-11-15T00:00:00"^^xsd:dateTime ;
    dct:language <http://publications.europa.eu/resource/authority/language/ITA> ;
    dct:modified "2025-11-27T00:00:00"^^xsd:dateTime ;
    dct:publisher [ a dcatapit:Agent,
                foaf:Agent ;
            dct:identifier "N/A" ;
            foaf:name "Zenodo"@it ] ;
    dct:rightsHolder [ a dcatapit:Agent,
                foaf:Agent ;
            dct:identifier "ingv" ;
            foaf:name "Istituto Nazionale di Geofisica e Vulcanologia"@it ] ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((13.5857 37.3849, 13.5935 37.3878, 13.5979 37.3887, 13.6052 37.3901, 13.6082 37.3865, 13.6076 37.3796, 13.6039 37.3714, 13.5982 37.3687, 13.5909 37.3701, 13.5857 37.3730, 13.5831 37.3758, 13.5832 37.3807, 13.5857 37.3849))"^^gsp:wktLiteral,
                "{\"type\":\"Polygon\",\"coordinates\":[[[13.58565902762348,37.384929659995905],[13.59348679060349,37.38776667919724],[13.597949989023615,37.388748699344205],[13.605228425120002,37.39011259473115],[13.608249671640802,37.38651185698622],[13.607631684397344,37.37958267810346],[13.603855134104377,37.37139778537724],[13.59822463884484,37.368723859047265],[13.590877534006722,37.37008811865813],[13.585727692698129,37.3729802665692],[13.58311844029231,37.375763173201676],[13.583187103795353,37.38067392978817],[13.58565902762348,37.384929659995905]]]}"^^<https://www.iana.org/assignments/media-types/application/vnd.geo+json> ] ;
    dct:title "DEMETRA – Dense Maccalube Tromino Acquisition – Horizontal-to-Vertical Spectral Ratio (HVSR) and Polarization Parameters" ;
    adms:identifier [ dct:creator [ a dcatapit:Agent,
                        foaf:Agent ;
                    foaf:name "INGV"@en,
                        "INGV"@it ] ;
            skos:notation "ingv_1157" ] ;
    dcat:contactPoint <https://data.ingv.it/organization/ingv> ;
    dcat:keyword "ambiente",
        "terremoti",
        "vulcani" ;
    dcat:landingPage <https://data.ingv.it/dataset/1157> ;
    dcat:theme <http://publications.europa.eu/resource/authority/data-theme/TECH> .

<http://publications.europa.eu/resource/authority/data-theme/TECH> a skos:Concept ;
    skos:prefLabel "Wissenschaft und Technologie"@de,
        "Science and technology"@en,
        "Ciencia y tecnología"@es,
        "Science et technologie"@fr,
        "Scienza e tecnologia"@it .

<https://data.ingv.it/organization/ingv> a dcatapit:Organization,
        vcard:Kind,
        vcard:Organization,
        foaf:Organization ;
    vcard:fn "ingv" ;
    vcard:hasEmail <aoo.roma@pec.ingv.it> ;
    vcard:hasTelephone "" ;
    vcard:hasURL "http://www.ingv.it/it/" ;
    foaf:name "Zenodo" .