@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/333f4c78-e010-4c26-a86b-fcc21a7f17e4> a dcat:Dataset ;
    dct:description """NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and modeling efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. 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 the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters).""" ;
    dct:identifier "gov.noaa.ngdc.mgg.dem:606" ;
    dct:issued "2025-11-20T21:31:53.894218"^^xsd:dateTime ;
    dct:language "{en-US}" ;
    dct:modified "2008-12-31"^^xsd:date ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-70.7400 43.0000, -69.6300 43.0000, -69.6300 43.9900, -70.7400 43.9900, -70.7400 43.0000))"^^gsp:wktLiteral ] ;
    dct:title "Portland, Maine 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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/04c8b2ff-9595-4743-8bd6-ebf156dea44e>,
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        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/273d0e2c-069a-47b1-922e-df618abdb802>,
        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/307f24b4-a64f-4169-a443-5619e5dfa4e1>,
        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/45ca1628-7b0f-4d08-8c3a-f7766e506025>,
        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/929a42c4-afc4-43e5-ad28-a82722a71c13>,
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        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/a5e17ef7-e6d9-4d72-9e6e-37e2425f32e9>,
        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/cdf45500-4935-420b-a98d-ead96c1b833a>,
        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/d3614116-ac9c-4e08-bde8-a4b2ea97eff7>,
        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/d8bfa7e4-e87a-4d41-9171-67f5642504e3>,
        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/e472eae2-3553-40b7-90f2-704ad4f59f10>,
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        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/f81f0f25-d3a2-46f6-8bf0-64d4d4ae8688>,
        <https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/f8f8d6a6-85a9-4d99-9a6a-9a2e23699f15> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "bath",
        "boulder",
        "boulder-world-data-center-for-marine-geology-and-geophysics",
        "cape-elizabeth",
        "ckan",
        "coastal-relief",
        "continent-north-america-united-states-of-america-maine",
        "dem-digital-elevation-model",
        "doc-noaa-nesdis-ngdc-national-geophysical-data-center",
        "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",
        "h-1-meter-30-meters",
        "integrated-bathymetry-and-topography",
        "national",
        "nesdis",
        "noaa",
        "north-america",
        "ocean-atlantic-ocean-north-atlantic-ocean",
        "portland",
        "portsmouth",
        "u-s-department-of-commerce",
        "united-states",
        "v-1-meter",
        "vertical-location-land-surface",
        "vertical-location-sea-floor",
        "wdc-mgg" .

<https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/04c8b2ff-9595-4743-8bd6-ebf156dea44e> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611253"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.870417"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/181783d9-3af9-4e53-b383-ff8e517ab626> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611301"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.874733"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/1be396be-df68-4e86-8213-0ce30280a89a> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611306"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.875098"^^xsd:dateTime ;
    dct:title "Portland, ME 1/3 arc-second Tsunami Inundation DEM" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/download/606> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/273d0e2c-069a-47b1-922e-df618abdb802> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611268"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.871958"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/307f24b4-a64f-4169-a443-5619e5dfa4e1> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611258"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.870850"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/45ca1628-7b0f-4d08-8c3a-f7766e506025> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611278"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.872786"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/929a42c4-afc4-43e5-ad28-a82722a71c13> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611282"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.873187"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/a4a816f3-a29e-4178-b783-afcd06431d11> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611273"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.872390"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/a5e17ef7-e6d9-4d72-9e6e-37e2425f32e9> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611237"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.869599"^^xsd:dateTime ;
    dct:title "Portland, Maine Coastal Digital Elevation Model ASCII DEM" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/getArchive/606?gridFormat=ESRI+Arc+ASCII> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/cdf45500-4935-420b-a98d-ead96c1b833a> a dcat:Distribution ;
    dct:description "keyword_list.html" ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611325"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.876590"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/d3614116-ac9c-4e08-bde8-a4b2ea97eff7> a dcat:Distribution ;
    dct:description "coastal.html" ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611263"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.871400"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/d8bfa7e4-e87a-4d41-9171-67f5642504e3> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611287"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.873593"^^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/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/e472eae2-3553-40b7-90f2-704ad4f59f10> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611320"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.876208"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/e7dceadc-6369-47d2-a2f0-7608b629889d> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611292"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.873982"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/efa3020a-a66d-4f2c-b066-8d2d27e9101e> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611247"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.870005"^^xsd:dateTime ;
    dct:title "Portland, Maine Coastal Digital Elevation Model Homepage" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/download/606> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/f12c50d3-fd43-4800-a53e-92a84449b626> a dcat:Distribution ;
    dct:description "inundation.html" ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611310"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.875460"^^xsd:dateTime ;
    dct:title "NOAA Tsunami Inundation Gridding Project" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/mgg/inundation/tsunami/inundation.html> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/dataset/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/f81f0f25-d3a2-46f6-8bf0-64d4d4ae8688> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611296"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.874361"^^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/333f4c78-e010-4c26-a86b-fcc21a7f17e4/resource/f8f8d6a6-85a9-4d99-9a6a-9a2e23699f15> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2021-03-11T05:14:07.611315"^^xsd:dateTime ;
    dct:modified "2025-11-20T21:31:53.875816"^^xsd:dateTime ;
    dct:title "Digital Elevation Model of Portland, Maine: Procedures, Data Sources and Analysis" ;
    dcat:accessURL <http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/606> ;
    dcat:mediaType "text/html" .

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