@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/1b48c64e-da72-484a-8d0d-24c1db548fcb> a dcat:Dataset ;
    dct:description "The Koyukuk geophysical survey is located in interior Alaska in the Koyukuk mining district, about 300 kilometers north of Fairbanks, Alaska. Frequency domain electromagnetic and magnetic data were collected with the SIGHEM-5 system from August to October 1997. A total of 4223.4 line kilometers were collected covering 533 square kilometers. Line spacing was 400 meters (m). Data were collected 30 m above the ground surface from a helicopter towed sensor platform (\"bird\") on a 30-m-long line. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/30434." ;
    dct:identifier "5b6ea762-d8a8-44cc-91a5-4a96c908f6e2_source" ;
    dct:issued "2025-09-24T04:09:30.118436"^^xsd:dateTime ;
    dct:modified "2025-09-24T04:09:30.118445"^^xsd:dateTime ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-150.6512 67.0690, -148.7577 67.0690, -148.7577 67.8005, -150.6512 67.8005, -150.6512 67.0690))"^^gsp:wktLiteral ] ;
    dct:title "Koyukuk electromagnetic and magnetic airborne geophysical survey data compilation" ;
    dcat:distribution <https://data.amerigeoss.org/dataset/1b48c64e-da72-484a-8d0d-24c1db548fcb/resource/2b52802a-a76a-44d8-95bb-00d5a4775e7a>,
        <https://data.amerigeoss.org/dataset/1b48c64e-da72-484a-8d0d-24c1db548fcb/resource/69538d3d-18ac-47f7-acdf-9a2fd4e9d4ed>,
        <https://data.amerigeoss.org/dataset/1b48c64e-da72-484a-8d0d-24c1db548fcb/resource/cd38d310-869b-403b-b0b6-cb78ce6a84c4>,
        <https://data.amerigeoss.org/dataset/1b48c64e-da72-484a-8d0d-24c1db548fcb/resource/dba83591-78bf-4b45-8de2-bbaa5d2a3bf8> ;
    dcat:keyword "AmeriGEO",
        "AmeriGEOSS",
        "CKAN",
        "GEO",
        "GEOSS",
        "National",
        "North America",
        "United States",
        "acme creek",
        "aeromagnetic",
        "aeromagnetic data",
        "aeromagnetic map",
        "aeromagnetic survey",
        "airborne geophysical survey",
        "analytic signal",
        "apparent resistivity data",
        "apparent resistivity map",
        "apparent resistivity survey",
        "archibald creek",
        "bettles river",
        "bore creek",
        "chandalar mining district",
        "chapman creek",
        "chapman island",
        "clara creek",
        "coldfoot",
        "conductivity survey",
        "cow creek",
        "electromagnetic data",
        "electromagnetic survey",
        "emery creek",
        "emma creek",
        "exploration",
        "fay creek",
        "first vertical derivative",
        "frequency domain electromagnetic data",
        "geologic",
        "geology",
        "geophysical map",
        "geophysical survey",
        "geophysics",
        "geophysics search tag",
        "gold creek",
        "gridded data",
        "hammond river",
        "horace mountain",
        "howard creek",
        "japanese creek",
        "kalhabuk mountain",
        "koyuk mining district",
        "larson creek",
        "limestone creek",
        "linda creek",
        "linda creek lake",
        "line data",
        "magnet creek",
        "magnetic data",
        "magnetic survey",
        "magnetics",
        "mailbox creek",
        "marion creek",
        "mathews river",
        "middle fork koyukuk river",
        "midnight dome",
        "minnie creek",
        "minnie creek lake",
        "moose creek",
        "mule creek",
        "myrtle creek",
        "nimiuk",
        "nolan",
        "nolan creek",
        "nolan creek lake",
        "nugget creek",
        "over creek",
        "porcupine creek",
        "poss mountain",
        "quartz creek",
        "remote sensing",
        "resistivity",
        "resistivity survey",
        "robert creek",
        "sawyer creek",
        "sheep creek",
        "slate creek",
        "smith creek",
        "smith creek dome",
        "sukakpak mountain",
        "swift creek",
        "thompson pup",
        "tramway bar",
        "twelvemile creek",
        "vermont creek",
        "vi creek",
        "wiehl mountain",
        "willow creek",
        "wiseman",
        "wiseman creek" .

<https://data.amerigeoss.org/dataset/1b48c64e-da72-484a-8d0d-24c1db548fcb/resource/2b52802a-a76a-44d8-95bb-00d5a4775e7a> a dcat:Distribution ;
    dct:description "CSDGM IMPORT ERROR: No digtinfo/formcont" ;
    dct:issued "2023-07-05T20:27:49.165775"^^xsd:dateTime ;
    dct:modified "2025-09-24T04:09:29.990249"^^xsd:dateTime ;
    dct:title "DGGS geophysics datasets are typically compilations of multiple digital data file formats. These formats may include: GeoTiff, ESRI shapefile, Geosoft binary grid (GRD), Microsoft Office documents, PDF, ER Mapper ERS, ASCII text files (including CSV), Geosoft ASCII grid (GXF), Geosoft database, AutoCAD DXF, Geosoft plot file (PLT), Printer files (HPP, PRN, or other), digital images (multiple formats), digital video (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ" ;
    dcat:accessURL <http://doi.org/10.14509/30434> .

<https://data.amerigeoss.org/dataset/1b48c64e-da72-484a-8d0d-24c1db548fcb/resource/69538d3d-18ac-47f7-acdf-9a2fd4e9d4ed> a dcat:Distribution ;
    dct:issued "2023-07-05T20:27:49.165786"^^xsd:dateTime ;
    dct:modified "2025-09-24T04:09:29.993163"^^xsd:dateTime ;
    dct:title "Web Resource" ;
    dcat:accessURL <http://doi.org/10.14509/27222> .

<https://data.amerigeoss.org/dataset/1b48c64e-da72-484a-8d0d-24c1db548fcb/resource/cd38d310-869b-403b-b0b6-cb78ce6a84c4> a dcat:Distribution ;
    dct:issued "2023-07-05T20:27:49.165790"^^xsd:dateTime ;
    dct:modified "2025-09-24T04:09:29.994414"^^xsd:dateTime ;
    dct:title "Web Resource" ;
    dcat:accessURL <http://doi.org/10.14509/29555> .

<https://data.amerigeoss.org/dataset/1b48c64e-da72-484a-8d0d-24c1db548fcb/resource/dba83591-78bf-4b45-8de2-bbaa5d2a3bf8> a dcat:Distribution ;
    dct:issued "2023-07-05T20:27:49.165782"^^xsd:dateTime ;
    dct:modified "2025-09-24T04:09:29.991635"^^xsd:dateTime ;
    dct:title "Web Resource" ;
    dcat:accessURL <http://doi.org/10.14509/30434> .

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