@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/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc> a dcat:Dataset ;
    dct:description "NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's (NTHMP) efforts to improve community preparedness and hazard mitigation. These integrated bathymetric-topographic DEMs are used to support tsunami and coastal inundation mapping. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to various vertical and horizontal datums depending on the specific modeling requirements of each State. For specific datum information on each DEM, refer to the appropriate DEM documentation. Cell sizes also vary depending on the specification required by modelers in each State, but typically range from 8/15 arc-second (~16 meters) to 8 arc-seconds (~240 meters)." ;
    dct:identifier "gov.noaa.ngdc.mgg.dem:4270" ;
    dct:issued "2025-11-19T16:59:13.089800"^^xsd:dateTime ;
    dct:language "{en-US}" ;
    dct:modified "2012-10-16"^^xsd:date ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-166.6600 53.8000, -166.4200 53.8000, -166.4200 53.9500, -166.6600 53.9500, -166.6600 53.8000))"^^gsp:wktLiteral ] ;
    dct:title "Unalaska, Alaska Coastal Digital Elevation Model" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce" ;
            vcard:hasEmail <mailto:dem.info@noaa.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/01aff98f-3e3f-440b-9f50-da61276e3458>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/0b63b2da-b97b-4740-a78e-97d860736fd8>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/1b4ddb41-1d47-447d-9186-79f0f4cd7d0e>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/1f1e1b88-0892-41cb-90d9-bb2a81cd345b>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/20073b95-a120-4591-a49a-a2dd9f0354e2>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/3c02aaa5-fa48-42ab-b450-b1562fc046d0>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/74f6e4cf-5281-416d-8726-a5dad7b4108f>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/8c27fc04-cfc9-491a-8a93-1c6fbc7ade82>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/9c16bc86-804e-40e3-84b0-4690d27b9e9d>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/9ec04e56-2a2f-4a51-8f3a-3bc65056461d>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/9f32abee-5f5f-4728-a897-60d637b286d4>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/a5d89824-c198-437c-ad2e-bfed71eef02f>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/a9bb31bc-8e5c-425c-be52-8f6d7fa95b3a>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/ba50cfbd-b586-48f3-94a2-e1777dcdf211>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/c9ca1924-fddc-409a-8c52-f07de86ae1ca>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/d977228d-56a6-4013-8d9a-3d9d50931f88>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/f0b5bdb3-7483-4ecd-99b8-dbf809085e63>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/f8936d44-e768-4dad-85c3-134ebe17441d>,
        <https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/fa3b7f21-61c7-4acb-a479-f13e811fcc78> ;
    dcat:keyword "aleutian-islands",
        "amerigeo",
        "amerigeoss",
        "boulder",
        "boulder-world-data-center-for-marine-geology-and-geophysics",
        "ckan",
        "coastal-relief",
        "continent-north-america-united-states-of-america-alaska",
        "dem-digital-elevation-model",
        "doc-noaa-nesdis-ngdc-national-geophysical-data-center",
        "dutch-harbor",
        "earth-science-land-surface-topography-terrain-elevation",
        "earth-science-land-surface-topography-topographical-relief",
        "earth-science-oceans-bathymetry-seafloor-topography-bathymetry",
        "earth-science-oceans-bathymetry-seafloor-topography-seafloor-topography",
        "earth-science-oceans-bathymetry-seafloor-topography-water-depth",
        "earth-science-oceans-coastal-processes-coastal-elevation",
        "geo",
        "geoss",
        "gridded-elevations",
        "iliuliuk-bay",
        "integrated-bathymetry-and-topography",
        "national",
        "nesdis",
        "noaa",
        "north-america",
        "ocean-pacific-ocean-north-pacific-ocean",
        "ocean-pacific-ocean-north-pacific-ocean-aleutian-islands",
        "u-s-department-of-commerce",
        "unalaska",
        "united-states",
        "v-1-meter",
        "vertical-location-land-surface",
        "vertical-location-sea-floor",
        "wdc-mgg" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/01aff98f-3e3f-440b-9f50-da61276e3458> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191543"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.046672"^^xsd:dateTime ;
    dct:title "Unalaska, Alaska Coastal Digital Elevation Model Homepage" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/download/4270> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/0b63b2da-b97b-4740-a78e-97d860736fd8> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191572"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.050805"^^xsd:dateTime ;
    dct:title "NOAA GeoPlatform Entry for Digital Elevation Model Footprints" ;
    dcat:accessURL <http://noaa.maps.arcgis.com/home/item.html?id=d41f39c8a6684c54b62c8f1ab731d5ad> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/1b4ddb41-1d47-447d-9186-79f0f4cd7d0e> a dcat:Distribution ;
    dct:description "nthmp.html" ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191611"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.056001"^^xsd:dateTime ;
    dct:title "NTHMP DEM Project" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/mgg/inundation/nthmp/nthmp.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/1f1e1b88-0892-41cb-90d9-bb2a81cd345b> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191567"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.050141"^^xsd:dateTime ;
    dct:title "DEM Footprints ArcGIS Map Service" ;
    dcat:accessURL <http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_extents/MapServer> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/20073b95-a120-4591-a49a-a2dd9f0354e2> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191591"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.053393"^^xsd:dateTime ;
    dct:title "Digital Elevation Model Footprints ArcGIS Dynamic Map Service" ;
    dcat:accessURL <http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_extents/MapServer> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/3c02aaa5-fa48-42ab-b450-b1562fc046d0> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191563"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.049444"^^xsd:dateTime ;
    dct:title "NOAA GeoPlatform Entry for Digital Elevation Models: Color Shaded Relief" ;
    dcat:accessURL <http://noaa.maps.arcgis.com/home/item.html?id=feb3c625dc094112bb5281c17679c769> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/74f6e4cf-5281-416d-8726-a5dad7b4108f> a dcat:Distribution ;
    dct:description "nthmp.html" ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191606"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.055376"^^xsd:dateTime ;
    dct:title "National Tsunami Hazard Mitigation Program DEMs" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/mgg/inundation/nthmp/nthmp.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/8c27fc04-cfc9-491a-8a93-1c6fbc7ade82> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191548"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.047350"^^xsd:dateTime ;
    dct:title "DEM text search tool" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/search> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/9c16bc86-804e-40e3-84b0-4690d27b9e9d> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191620"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.057353"^^xsd:dateTime ;
    dct:title "GCMD Feedback Form" ;
    dcat:accessURL <http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/9ec04e56-2a2f-4a51-8f3a-3bc65056461d> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191615"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.056679"^^xsd:dateTime ;
    dct:title "Digital Elevation Model of Unalaska, Alaska: Procedures, Data Sources and Analysis" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/4270> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/9f32abee-5f5f-4728-a897-60d637b286d4> a dcat:Distribution ;
    dct:description "coastal.html" ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191558"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.048798"^^xsd:dateTime ;
    dct:title "Integrated Models of Coastal Relief at NGDC" ;
    dcat:accessURL <http://ngdc.noaa.gov/mgg/coastal/coastal.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/a5d89824-c198-437c-ad2e-bfed71eef02f> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191577"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.051459"^^xsd:dateTime ;
    dct:title "DEM Color Shaded Relief Image Service" ;
    dcat:accessURL <http://gis.ngdc.noaa.gov/arcgis/rest/services/dem_hillshades/ImageServer> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/a9bb31bc-8e5c-425c-be52-8f6d7fa95b3a> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191553"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.048061"^^xsd:dateTime ;
    dct:title "Map Interface" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/map> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/ba50cfbd-b586-48f3-94a2-e1777dcdf211> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191601"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.054731"^^xsd:dateTime ;
    dct:title "Unalaska, AK 8/15 arc-second Tsunami Inundation DEM" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/download/4270> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/c9ca1924-fddc-409a-8c52-f07de86ae1ca> a dcat:Distribution ;
    dct:description "keyword_list.html" ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191624"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.058007"^^xsd:dateTime ;
    dct:title "GCMD Keywords Page" ;
    dcat:accessURL <http://gcmd.nasa.gov/learn/keyword_list.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/d977228d-56a6-4013-8d9a-3d9d50931f88> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191533"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.045955"^^xsd:dateTime ;
    dct:title "Unalaska, Alaska Coastal Digital Elevation Model ASCII DEM" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/getArchive/4270?gridFormat=ESRI+Arc+ASCII> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/f0b5bdb3-7483-4ecd-99b8-dbf809085e63> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191596"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.054071"^^xsd:dateTime ;
    dct:title "Digital Elevation Model Footprints Web Map Service (WMS)" ;
    dcat:accessURL <http://maps.ngdc.noaa.gov/arcgis/services/web_mercator/dem_extents/MapServer/WMSServer?request=GetCapabilities&service=WMS> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/f8936d44-e768-4dad-85c3-134ebe17441d> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191587"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.052751"^^xsd:dateTime ;
    dct:title "Digital Elevation Models: Color Shaded Relief Web Map Service (WMS)" ;
    dcat:accessURL <http://gis.ngdc.noaa.gov/arcgis/services/dem_hillshades/ImageServer/WMSServer?request=GetCapabilities&service=WMS> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/0db9a9dd-387b-4ca5-ba2e-1015dd91a1cc/resource/fa3b7f21-61c7-4acb-a479-f13e811fcc78> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:12:03.191582"^^xsd:dateTime ;
    dct:modified "2025-11-19T16:59:13.052101"^^xsd:dateTime ;
    dct:title "Digital Elevation Models: Color Shaded Relief ArcGIS Image Service" ;
    dcat:accessURL <http://gis.ngdc.noaa.gov/arcgis/rest/services/dem_hillshades/ImageServer> ;
    dcat:mediaType "text/html" .

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