@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/6b04e8e8-195c-4eca-98b6-d2252f3a37a5> a dcat:Dataset ;
    dct:description "The elevation contours in this dataset have a 2-foot (ft) interval and were derived from a digital elevation model (DEM) of beach topography and nearshore bathymetry of Lake Superior at Minnesota Point, Duluth, Minnesota.  The DEM has a 10-meter (32.8084 ft) cell size and was created from LiDAR data representing beach topography and sonar data representing bathymetry to a distance of approximately 1.3 kilometers (0.8 miles) offshore.  LiDAR data were collected August 10, 2019 using a boat-mounted Optech ILRIS scanner and methodology similar to that described by Huizinga and Wagner (2019).  Multi-beam sonar data were collected August 7-11, 2019 using an R2Sonic 2024 sonar unit and methodology similar to that described by Richards and Huizinga (2018).  Single-beam sonar data were collected August 27-28, 2019 using a CEESCOPE echosounder and methodology similar to that described by Wilson and Richards (2006)." ;
    dct:identifier "USGS:5e389bcce4b0a79317df576f" ;
    dct:issued "2025-11-19T14:47:32.617027"^^xsd:dateTime ;
    dct:modified "20200821"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-92.0560 46.7096, -92.0560 46.7437, -91.9990 46.7437, -91.9990 46.7096, -92.0560 46.7096))"^^gsp:wktLiteral ] ;
    dct:title "Elevation contours of beach topography and nearshore bathymetry of Lake Superior at Minnesota Point, Duluth, MN, from hydrographic survey August 2019" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Daniel M Wagner" ;
            vcard:hasEmail <mailto:dwagner@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/6b04e8e8-195c-4eca-98b6-d2252f3a37a5/resource/1cbe78b6-c56c-48b9-bcb5-2e2f2d13248f>,
        <https://data.amerigeoss.org/dataset/6b04e8e8-195c-4eca-98b6-d2252f3a37a5/resource/f84f3d8e-ff39-440e-8718-3b31b0160477> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "bathymetry",
        "bathymetry-and-elevation",
        "ckan",
        "dem",
        "digital-elevation-models",
        "duluth",
        "elevation",
        "geo",
        "geoss",
        "great-lakes",
        "hydroacoustic",
        "inlandwaters",
        "lake-superior",
        "las",
        "lidar",
        "limnology",
        "national",
        "north-america",
        "sonar",
        "southwestern-lake-superior",
        "superior",
        "united-states",
        "usgs-5e389bcce4b0a79317df576f",
        "xyz" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/6b04e8e8-195c-4eca-98b6-d2252f3a37a5/resource/1cbe78b6-c56c-48b9-bcb5-2e2f2d13248f> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T20:04:12.715533"^^xsd:dateTime ;
    dct:modified "2025-11-19T14:47:32.591997"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/10.5066/P9GXT1X1> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/dataset/6b04e8e8-195c-4eca-98b6-d2252f3a37a5/resource/f84f3d8e-ff39-440e-8718-3b31b0160477> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T20:04:12.715526"^^xsd:dateTime ;
    dct:modified "2025-11-19T14:47:32.591159"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.5e389bcce4b0a79317df576f.xml> ;
    dcat:mediaType "text/xml" .

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