@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 xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/03704bdf-7e8a-4676-ab71-f29f6d234bcc> a dcat:Dataset ;
    dct:description "This digital publication, GPR 2008-1, contains geophysical data and a digital elevation model that were produced from airborne geophysical surveys conducted in 2007 for part of the western Fortymile mining district, east-central Alaska. Aeromagnetic and electromagnetic data were acquired for 250 sq miles during the helicopter-based survey. Data provided in GPR 2008-1 include processed (1) linedata ASCII database, (2) gridded files of magnetic data, a calculated vertical magnetic gradient (first vertical derivative), apparent resistivity data, and a digital elevation model, (3) vector files of data contours and flight lines, and (4) the Contractor's descriptive project report. Data are described in more detail in the \"GPR2008-1Readme.pdf\" and \"linedata/GPR2008-1-Linedata.txt\" files included on the DVD." ;
    dct:identifier "8288ce00-79d1-45e2-a18d-0a9da8f09ec6_source" ;
    dct:issued "2025-09-23T15:56:17.532773"^^xsd:dateTime ;
    dct:modified "2025-09-23T15:56:17.532784"^^xsd:dateTime ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-143.3900 63.9500, -142.6100 63.9500, -142.6100 64.3600, -143.3900 64.3600, -143.3900 63.9500))"^^gsp:wktLiteral ] ;
    dct:title "Line, grid, and vector data, plot files, and descriptive project report for the airborne geophysical survey of part of the western Fortymile mining district, east-central Alaska" ;
    dcat:distribution <https://data.amerigeoss.org/dataset/03704bdf-7e8a-4676-ab71-f29f6d234bcc/resource/a6799f9b-4776-48d1-927e-73a2d7fbf56a>,
        <https://data.amerigeoss.org/dataset/03704bdf-7e8a-4676-ab71-f29f6d234bcc/resource/dc54ce8a-9f23-4512-a98d-88826b325760> ;
    dcat:keyword "AmeriGEO",
        "AmeriGEOSS",
        "CKAN",
        "GEO",
        "GEOSS",
        "National",
        "North America",
        "United States",
        "aeromagnetic data",
        "aeromagnetic map",
        "airborne geophysical survey",
        "alaska",
        "apparent resistivity contours",
        "apparent resistivity data",
        "apparent resistivity map",
        "dighem v em system",
        "digital elevation model",
        "eagle quadrangle",
        "electromagnetic data",
        "first vertical derivative",
        "fortymile mining district",
        "geophysics",
        "hem survey",
        "magnetic contours",
        "state of",
        "tanacross quadrangle" .

<https://data.amerigeoss.org/dataset/03704bdf-7e8a-4676-ab71-f29f6d234bcc/resource/a6799f9b-4776-48d1-927e-73a2d7fbf56a> a dcat:Distribution ;
    dct:issued "2023-07-05T20:39:58.522948"^^xsd:dateTime ;
    dct:modified "2025-09-23T15:56:17.506988"^^xsd:dateTime ;
    dct:title "Web Resource" ;
    dcat:accessURL <http://www.dggs.alaska.gov/pubs/geophysics> .

<https://data.amerigeoss.org/dataset/03704bdf-7e8a-4676-ab71-f29f6d234bcc/resource/dc54ce8a-9f23-4512-a98d-88826b325760> a dcat:Distribution ;
    dct:description "CSDGM IMPORT ERROR: No digtinfo/formcont" ;
    dct:issued "2023-07-05T20:39:58.522942"^^xsd:dateTime ;
    dct:modified "2025-09-23T15:56:17.505977"^^xsd:dateTime ;
    dct:title "PDF" ;
    dcat:accessURL <http://www.dggs.alaska.gov/pubs/geophysics> .

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