@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/550b63b0-d503-407b-aa1c-2d9d1e4a59f3> a dcat:Dataset ;
    dct:description "This data release consists of an orthophoto of the Tanana River in Alaska acquired on July 24, 2019. The orthophoto was produced from images obtained using a Hasselblad A6D-100C 100 megapixel digital mapping camera deployed within a pod mounted on the landing gear of a Robinson R44 helicopter.  Images were acquired as the helicopter transited a series of flight lines designed to provide complete coverage, with ample overlap, of the study area along the Tanana River. Also within the pod was an ATLANS GPS/Inertial Motion Unit (IMU) that recorded the position and orientation of the platform during the flight.  This information was used to geo-reference the images by performing aerial triangulation and bundle adjustment within the TerraSolid software suite, which was also used to produce a LiDAR DEM that was incorporated into the orthophoto production process.  The resulting orthorectified image had a spatial resolution (pixel size) of 0.1 m.  The image is saved as a GeoTIFF file with an embedded header that contains the spatial referencing information for the image; the projected coordinate system is UTM Zone 6N, NAD83.  The main purpose of this orthophoto was to serve as a base for geo-referencing the video described in a related data release accessible from the parent landing page cited above." ;
    dct:identifier "USGS:5fb7b60dd34eb413d5e14811" ;
    dct:issued "2025-11-21T18:50:36.247846"^^xsd:dateTime ;
    dct:modified "20210503"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-149.1100 64.5613, -149.1100 64.5732, -149.0629 64.5732, -149.0629 64.5613, -149.1100 64.5613))"^^gsp:wktLiteral ] ;
    dct:title "Geo-referenced orthophotos of the Tanana River, Alaska, acquired July 24, 2019" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Carl J Legleiter" ;
            vcard:hasEmail <mailto:cjl@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/550b63b0-d503-407b-aa1c-2d9d1e4a59f3/resource/a98e99cc-0569-4fc4-8554-c18161453f1c>,
        <https://data.amerigeoss.org/dataset/550b63b0-d503-407b-aa1c-2d9d1e4a59f3/resource/f7854317-17c9-4dc4-b2c9-605d74c4d0ac> ;
    dcat:keyword "alaska",
        "amerigeo",
        "amerigeoss",
        "ckan",
        "geo",
        "geo-referenced",
        "geoss",
        "image",
        "national",
        "nenana",
        "north-america",
        "orthophotography",
        "remote-sensing",
        "river",
        "tanana-river",
        "united-states",
        "usa",
        "usgs-5fb7b60dd34eb413d5e14811" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/550b63b0-d503-407b-aa1c-2d9d1e4a59f3/resource/a98e99cc-0569-4fc4-8554-c18161453f1c> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T20:47:25.333212"^^xsd:dateTime ;
    dct:modified "2025-11-21T18:50:36.237742"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/10.5066/P9ZY5LK1> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/dataset/550b63b0-d503-407b-aa1c-2d9d1e4a59f3/resource/f7854317-17c9-4dc4-b2c9-605d74c4d0ac> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T20:47:25.333201"^^xsd:dateTime ;
    dct:modified "2025-11-21T18:50:36.237327"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.5fb7b60dd34eb413d5e14811.xml> ;
    dcat:mediaType "text/xml" .

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