@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix org: <http://www.w3.org/ns/org#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3> a dcat:Dataset ;
    dct:description """The Land Processes Distributed Active Archive Center (LP DAAC) is responsible for the archive and distribution of NASA Making Earth System Data Records for Use in Research Environments ([MEaSUREs](https://earthdata.nasa.gov/about/competitive-programs/measures
)) SRTM, which includes the global 30 arc second (~1,000 meter) product.  

The NASA SRTM product with sample spacing of 3 arc second (~90 meter) generated by a 3 X 3 averaging of the 1 arc second data are then 10 X 10 averaged to produce thirty 30 arc second (~1,000 meter) data to correspond with Global 30 Arc Second Elevation (GTOPO30). (See the User Guide Section 2.1.4)

The NASA SRTM data sets result from a collaborative effort by the National Aeronautics and Space Administration (NASA) and the National Geospatial-Intelligence Agency (NGA - previously known as the National Imagery and Mapping Agency, or NIMA), as well as the participation of the German and Italian space agencies. This collaboration aims to generate a near-global digital elevation model (DEM) of Earth using radar interferometry. SRTM was the primary (and virtually only) payload on the STS-99 mission of the Space Shuttle Endeavour, which launched February 11, 2000 and flew for 11 days.

The SRTM swaths extended from ~30 degrees off-nadir to ~58 degrees off-nadir from an altitude of 233 kilometers (km), creating swaths ~225 km wide, and consisted of all land between 60° N and 56° S latitude to account for 80% of Earth's total landmass. 

Known Issues
* SRTMGL30 is Version 2.1 and has not been updated for the NASA SRTM V3.0 release as described in the User Guide.
* Known issues in the NASA SRTM are described in the following publication:
     * Rodriguez, E., C. S. Morris, and J. E. Belz (2006), A global assessment of the SRTM performance, Photogramm. Eng. Remote Sens., 72, 249–260. https://doi.org/10.14358/PERS.72.3.249""" ;
    dct:identifier "10.5067/MEASURES/SRTM/SRTMGL30.002" ;
    dct:issued "2025-04-01T18:00:34.171728"^^xsd:dateTime ;
    dct:modified "2026-10-26T22:16:10+00:00"^^xsd:dateTime ;
    dct:publisher <https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> ;
    dct:spatial [ a dct:Location ] ;
    dct:title "NASA Shuttle Radar Topography Mission Global 30 arc second V002" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Earthdata Forum" ;
            vcard:hasEmail <mailto:earthdata-support@nasa.gov> ] ;
    dcat:distribution <https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/1344a5a9-c46e-43c5-94c6-94971dca05b5>,
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        <https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/abe0bcd3-857f-4b09-8e54-75a9dd0dc78d>,
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    dcat:keyword "earth-science-radar-spectral-engineering-radar-imagery",
        "earth-science-topography-land-surface-terrain-elevation" ;
    dcat:theme <%7B%22Earth%20Science%22%7D> .

<https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/1344a5a9-c46e-43c5-94c6-94971dca05b5> a dcat:Distribution ;
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    dct:modified "2026-03-10T02:49:29.037981"^^xsd:dateTime ;
    dcat:accessURL <https://doi.org/10.1029/2005RG000183> ;
    dcat:mediaType "text/html" .

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    dcat:accessURL <https://lpdaac.usgs.gov/documents/13/SRTM_Quick_Guide.pdf> ;
    dcat:mediaType "application/pdf" .

<https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/4f6ae118-1783-4847-a50a-6adcbf559e4c> a dcat:Distribution ;
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    dcat:accessURL <https://search.earthdata.nasa.gov/search/granules?p=C2763266346-LPCLOUD> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/934e0bf4-6578-4e0d-be5c-cc0db0b3786b> a dcat:Distribution ;
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    dcat:accessURL <https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/SRTMGL30.002/e020n40.SRTMGL30.dem/e020n40.SRTMGL30.jpg.2.jpg> ;
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<https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/abe0bcd3-857f-4b09-8e54-75a9dd0dc78d> a dcat:Distribution ;
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<https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/b73ca408-249f-4a1f-a816-1d83902cf3f4> a dcat:Distribution ;
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    dct:modified "2026-03-10T02:49:29.037848"^^xsd:dateTime ;
    dcat:accessURL <https://lpdaac.usgs.gov/documents/179/SRTM_User_Guide_V3.pdf> ;
    dcat:mediaType "application/pdf" .

<https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/f2c7c27d-95f8-4f3e-b86c-b37fa46c263c> a dcat:Distribution ;
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    dct:modified "2026-03-10T02:49:29.037706"^^xsd:dateTime ;
    dcat:accessURL <https://www.earthdata.nasa.gov/centers/lp-daac> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/f924e196-9066-4538-b890-6db9d44d84c1> a dcat:Distribution ;
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    dct:modified "2026-03-10T02:49:29.037778"^^xsd:dateTime ;
    dcat:accessURL <https://eospso.nasa.gov/missions/shuttle-radar-topography-mission> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/855d5927-3cea-4329-8303-80bf3c7cf2d3/resource/ffd98b26-ed7d-40bc-97f3-92133f062589> a dcat:Distribution ;
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    dct:modified "2026-03-10T02:49:29.038193"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://cmr.earthdata.nasa.gov/search/concepts/C2763266346-LPCLOUD.iso19115> ;
    dcat:mediaType "text/xml" .

<https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> a org:Organization ;
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