@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/34f5ad87-7fff-4583-8796-c699bc077cef> a dcat:Dataset ;
    dct:description """One GMT file, topo15.grd, with the entire global topography. The grid resolution is 15 seconds which is roughly 0.27km at the equator. The data are pixel registered.

Land data are based on the 1-km averages of topography derived from the USGS SRTM30 grided DEM data product created with data from the NASA Shuttle Radar Topography Mission (https://www2.jpl.nasa.gov/srtm/). GTOPO30 data (http://www1.gsi.go.jp/geowww/globalmap-gsi/gtopo30/gtopo30.html) are used for high latitudes where SRTM data are not available.

Ocean data are based on the Smith and Sandwell global 1-minute grid (https://topex.ucsd.edu/WWW_html/mar_topo.html) between latitudes +/-81 degrees. Higher resolution grids have been added from the LDEO Ridge Multibeam Synthesis Project ( https://www.gmrt.org/ ), the JAMSTEC Data Site for Research Cruises (https://www.godac.jamstec.go.jp/darwin/e), and the NGDC Coastal Relief Model (https://www.ngdc.noaa.gov/mgg/coastal/coastal.html). Arctic bathymetry is from the International Bathymetric Chart of the Oceans (IBCAO) (https://www.ngdc.noaa.gov/mgg/bathymetry/arctic/arctic.html) [Jakobsson et al., 2003].

Matching files of source identification number are available for determining the data source for every pixel.""" ;
    dct:identifier "srtm15plus" ;
    dct:issued "2025-09-25T01:01:06.646494"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.646505"^^xsd:dateTime ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-180.0000 -90.0000, 180.0000 -90.0000, 180.0000 90.0000, -180.0000 90.0000, -180.0000 -90.0000))"^^gsp:wktLiteral ] ;
    dct:title "SRTM15_PLUS Estimated Topography, 15 seconds, Global, v1" ;
    dcat:distribution <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/09b64186-b9f8-4f16-9e14-e2c8e4adf111>,
        <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/1e1896bd-9e3f-47ae-bc96-b78dfc84cdd1>,
        <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/3c1cd2bd-3186-410d-8f93-d0d2dd313312>,
        <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/642ffb76-d01f-4d56-8458-c13bb3872a70>,
        <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/672a4596-e8be-4bc8-abc8-909261da40b7>,
        <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/733bd52a-dcaf-4ccf-bdbc-0a8efd1884ef>,
        <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/7defe8a4-e5a9-4247-ae03-ad20a1cc9b9f>,
        <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/b3ce2b94-85ac-4741-b135-2694c692b303>,
        <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/d1f7afd8-5c47-461a-a33b-400f6006e811>,
        <https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/f7298efe-f47d-41d2-a86e-e0ffa270714b> ;
    dcat:keyword "AmeriGEO",
        "AmeriGEOSS",
        "CKAN",
        "GEO",
        "GEOSS",
        "National",
        "North America",
        "United States",
        "altitude",
        "bathymetry",
        "becker",
        "data",
        "dem",
        "elevation",
        "estimated",
        "gebco",
        "global",
        "gmt",
        "latitude",
        "longitude",
        "nga",
        "noaa",
        "sandwell",
        "seconds",
        "sio",
        "smith",
        "topex",
        "topo15",
        "topography",
        "u.s. navy",
        "ucsd",
        "v11" .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/09b64186-b9f8-4f16-9e14-e2c8e4adf111> a dcat:Distribution ;
    dct:description "Background information from the source" ;
    dct:format "HTML" ;
    dct:issued "2023-06-10T20:08:06.490256"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.600815"^^xsd:dateTime ;
    dct:title "Background Information" ;
    dcat:accessURL <https://topex.ucsd.edu/WWW_html/srtm30_plus.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/1e1896bd-9e3f-47ae-bc96-b78dfc84cdd1> a dcat:Distribution ;
    dct:description "ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types." ;
    dct:format "HTML" ;
    dct:issued "2023-06-10T20:08:06.490238"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.595327"^^xsd:dateTime ;
    dct:title "Data Subset Form" ;
    dcat:accessURL <https://coastwatch.pfeg.noaa.gov/erddap/griddap/srtm15plus.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/3c1cd2bd-3186-410d-8f93-d0d2dd313312> a dcat:Distribution ;
    dct:description "Open Geospatial Consortium Web Map Service (WMS)" ;
    dct:format "WMS" ;
    dct:issued "2023-06-10T20:08:06.490272"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.606955"^^xsd:dateTime ;
    dct:title "OGC-WMS" ;
    dcat:accessURL <https://coastwatch.pfeg.noaa.gov/erddap/wms/srtm15plus/request?service=WMS&version=1.3.0&request=GetCapabilities> .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/642ffb76-d01f-4d56-8458-c13bb3872a70> a dcat:Distribution ;
    dct:description "Background information from the source" ;
    dct:format "HTML" ;
    dct:issued "2023-06-10T20:08:06.490263"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.603304"^^xsd:dateTime ;
    dct:title "Background Information" ;
    dcat:accessURL <https://topex.ucsd.edu/WWW_html/srtm30_plus.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/672a4596-e8be-4bc8-abc8-909261da40b7> a dcat:Distribution ;
    dct:description "ERDDAP's griddap service (a flavor of OPeNDAP) for gridded data. Add different extensions (e.g., .html, .graph, .das, .dds) to the base URL for different purposes." ;
    dct:issued "2023-06-10T20:08:06.490259"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.602076"^^xsd:dateTime ;
    dct:title "ERDDAP-griddap" ;
    dcat:accessURL <https://coastwatch.pfeg.noaa.gov/erddap/griddap/srtm15plus> .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/733bd52a-dcaf-4ccf-bdbc-0a8efd1884ef> a dcat:Distribution ;
    dct:description "Background information from the source" ;
    dct:format "HTML" ;
    dct:issued "2023-06-10T20:08:06.490249"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.598099"^^xsd:dateTime ;
    dct:title "Background Information" ;
    dcat:accessURL <https://topex.ucsd.edu/WWW_html/srtm30_plus.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/7defe8a4-e5a9-4247-ae03-ad20a1cc9b9f> a dcat:Distribution ;
    dct:description "An OPeNDAP service for gridded data. Add different extensions (e.g., .html, .das, .dds) to the base URL for different purposes." ;
    dct:issued "2023-06-10T20:08:06.490266"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.604536"^^xsd:dateTime ;
    dct:title "OPeNDAP" ;
    dcat:accessURL <https://coastwatch.pfeg.noaa.gov/erddap/griddap/srtm15plus> .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/b3ce2b94-85ac-4741-b135-2694c692b303> a dcat:Distribution ;
    dct:description "Background information from the source" ;
    dct:format "HTML" ;
    dct:issued "2023-06-10T20:08:06.490253"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.599454"^^xsd:dateTime ;
    dct:title "Background Information" ;
    dcat:accessURL <https://topex.ucsd.edu/WWW_html/srtm30_plus.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/d1f7afd8-5c47-461a-a33b-400f6006e811> a dcat:Distribution ;
    dct:description "Background information from the source" ;
    dct:format "HTML" ;
    dct:issued "2023-06-10T20:08:06.490269"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.605801"^^xsd:dateTime ;
    dct:title "Background Information" ;
    dcat:accessURL <https://topex.ucsd.edu/WWW_html/srtm30_plus.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/34f5ad87-7fff-4583-8796-c699bc077cef/resource/f7298efe-f47d-41d2-a86e-e0ffa270714b> a dcat:Distribution ;
    dct:description "ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data." ;
    dct:issued "2023-06-10T20:08:06.490246"^^xsd:dateTime ;
    dct:modified "2025-09-25T01:01:06.596715"^^xsd:dateTime ;
    dct:title "Make-A-Graph Form" ;
    dcat:accessURL <https://coastwatch.pfeg.noaa.gov/erddap/griddap/srtm15plus.graph> .

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