@prefix dcat: <http://www.w3.org/ns/dcat#> .
@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 vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/3b41951c-83a7-43b5-87c8-75bdd51659e7> a dcat:Dataset ;
    dct:description "This data release documents streambed sediment thickness in the Neversink watershed (NY) as determined by field observations and HVSR passive seismic measurements, and were collected as an extension of a previous data set collected in the same watershed (see Associated Items).  These measurements were made between May 17, 2021 and May 21, 2021 using MOHO Tromino three-component seismometers (MOHO, S.R.L.).  Seismic observations were converted to sediment thickness (depth to bedrock, meters) using the horizontal-to-vertical spectral ratio (HVSR) method.  Resonance frequencies were determined from time domain data using GRILLA (MOHO, S.R.L.) software and converted to inferred depth to bedrock for a range of possible values for sediment shear wave velocity, as determined from field observations, ground truthing, and previous studies in similar sediment types." ;
    dct:identifier "USGS:60c8adb0d34e86b9389dbfa0" ;
    dct:issued "2025-11-21T02:10:56.273445"^^xsd:dateTime ;
    dct:modified "20211110"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-74.6253 41.8725, -74.6253 42.0403, -74.3462 42.0403, -74.3462 41.8725, -74.6253 41.8725))"^^gsp:wktLiteral ] ;
    dct:title "Depth to bedrock determined from passive seismic measurements, Neversink River watershed, NY (USA)" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Robin L Glas" ;
            vcard:hasEmail <mailto:rglas@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/3b41951c-83a7-43b5-87c8-75bdd51659e7/resource/9f8b7cc5-b3ee-4d52-819a-0cffa87e7833>,
        <https://data.amerigeoss.org/dataset/3b41951c-83a7-43b5-87c8-75bdd51659e7/resource/e4018db1-c4a3-4e04-8ab6-244227982d47> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ckan",
        "environment",
        "geo",
        "geophysics",
        "geoscientificinformation",
        "geoss",
        "groundwater-and-surface-water-interaction",
        "headwater-streams",
        "hvsr",
        "hydrogeology",
        "hydrology",
        "inlandwaters",
        "national",
        "neversink-river",
        "new-york-state",
        "north-america",
        "regolith-thickness",
        "ulster-county",
        "united-states",
        "usgs-60c8adb0d34e86b9389dbfa0" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/3b41951c-83a7-43b5-87c8-75bdd51659e7/resource/9f8b7cc5-b3ee-4d52-819a-0cffa87e7833> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T19:49:54.787324"^^xsd:dateTime ;
    dct:modified "2025-11-21T02:10:56.261277"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.60c8adb0d34e86b9389dbfa0.xml> ;
    dcat:mediaType "text/xml" .

<https://data.amerigeoss.org/dataset/3b41951c-83a7-43b5-87c8-75bdd51659e7/resource/e4018db1-c4a3-4e04-8ab6-244227982d47> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T19:49:54.787332"^^xsd:dateTime ;
    dct:modified "2025-11-21T02:10:56.261688"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/10.5066/P9CKDMNY> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .