@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/2f64407f-282c-4c44-904c-53f8b3c84181> a dcat:Dataset ;
    dct:description "The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers—Louisville District conducted a pilot study on the use of an autonomous underwater vehicle (AUV) for a survey of water conditions during August 2016 in a portion of Nolin Lake, Kentucky. The AUV was equipped with sensors for the continuous collection of water-quality measurements for dissolved oxygen, pH, specific conductance, temperature, turbidity, total chlorophyll, and blue-green algae concentrations. The AUV continuously collected measurements of these water-quality parameters while traveling at varied depths in a set spatial pattern within a portion of the lake. In addition to the AUV survey, discrete nutrient- and algae-related samples were collected at various points in the study area of the lake, and along depth profiles. This digital dataset contains site information and the water-quality data from the AUV surveys, the discrete sampling, and the depth profiling." ;
    dct:identifier "USGS:59233442e4b0b7ff9fb11e71" ;
    dct:issued "2025-11-20T18:28:31.730671"^^xsd:dateTime ;
    dct:modified "20200827"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-86.2462 37.2810, -86.2462 37.3699, -86.1046 37.3699, -86.1046 37.2810, -86.2462 37.2810))"^^gsp:wktLiteral ] ;
    dct:title "Water-Quality Datasets from Synoptic Surveys in Nolin Lake, Kentucky, using an Autonomous Underwater Vehicle, Discrete Sampling, and Depth Profiles, August 2016" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Angie S. Crain" ;
            vcard:hasEmail <mailto:ascrain@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/2f64407f-282c-4c44-904c-53f8b3c84181/resource/3bc27aec-1435-4def-b630-9ec5d6faf23d>,
        <https://data.amerigeoss.org/dataset/2f64407f-282c-4c44-904c-53f8b3c84181/resource/7eac5c0e-7d2a-462d-a2d1-a6ee65d05b90> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "autonomous-underwater-vehicle",
        "ckan",
        "geo",
        "geoss",
        "kentucky",
        "kyrock",
        "national",
        "nolin-lake",
        "north-america",
        "reservoir",
        "surface-water",
        "united-states",
        "usgs-59233442e4b0b7ff9fb11e71",
        "water-quality" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/2f64407f-282c-4c44-904c-53f8b3c84181/resource/3bc27aec-1435-4def-b630-9ec5d6faf23d> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-07-07T15:35:29.594557"^^xsd:dateTime ;
    dct:modified "2025-11-20T18:28:31.720068"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/:10.5066/F798857D> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/dataset/2f64407f-282c-4c44-904c-53f8b3c84181/resource/7eac5c0e-7d2a-462d-a2d1-a6ee65d05b90> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-07-07T15:35:29.594550"^^xsd:dateTime ;
    dct:modified "2025-11-20T18:28:31.719635"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.59233442e4b0b7ff9fb11e71.xml> ;
    dcat:mediaType "text/xml" .

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