U.S. Virgin Islands 1 arc-second MHW Coastal Digital Elevation Model

browse graphicArcGIS Hillshade DEM
The 1 arc-second Virgin Islands DEM will be used to support NOAA's tsunami forecast system and for tsunami inundation modeling. This DEM encompasses the Virgin Islands and the adjacent off-shore coastal area.
Cite this dataset when used as a source.
  • ID not available.
gov.noaa.ngdc.mgg.dem:5110
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Distribution Formats Format not available
    Distributor DEM Information
    DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    dem.info@noaa.gov
    Dataset Point of Contact DEM Information
    DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    dem.info@noaa.gov
    Time Period 1909-01-01 to 2013-12-31
    Spatial Bounding Box Coordinates
    N: 19.00
    S: 17.00
    E: -64.00
    W: -65.15
    Spatial Coverage Map
    General Documentation
    Associated Resources
    Publication Dates
    • publication: 2014-07-31
    Edition Second
    Data Presentation Form mapDigital
    Dataset Progress Status Complete - production of the data has been completed
    Data Update Frequency As needed
    Purpose Developed for the Pacific Marine Environmental Laboratory (PMEL), NOAA Center for Tsunami Research program in support of NOAA's tsunami forecasting and warning efforts.
    Use Limitations
    • Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
    Originators
    • Dataset contact information not available
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Publishers
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Theme keywords Global Change Master Directory (GCMD) Science Keywords
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
    • Earth Science > Land Surface > Topography > Terrain Elevation
    • Earth Science > Land Surface > Topography > Terrain Elevation > Topographical Relief Maps
    • Earth Science > Oceans > Coastal Processes > Coastal Elevation
    Uncontrolled
    • Coastal Relief
    • Gridded elevations
    • Integrated bathymetry and topography
    Global Change Master Directory (GCMD) Service Keywords
    • DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
    • DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
    • DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
    Platform keywords Global Change Master Directory (GCMD) Platform Keywords
    • Models/Analyses > DEM > Digital Elevation Model
    Place keywords Global Change Master Directory (GCMD) Location Keywords
    • Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea > Virgin Islands
    • Vertical Location > Land Surface
    • Vertical Location > Sea Floor
    Uncontrolled
    • Virgin Islands
    • Atlantic Ocean
    Data Resolution keywords Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
    • 1 meter - < 30 meters
    Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
    • 1 meter - < 10 meters
    Keywords
      Keywords
        Use Constraints No constraint information available
        Fees Fee information not available.
        Lineage information for: dataset
        Processor
        • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
        Processing Steps
        • 2014-04-05T00:00:00 - All datasets obtained by NGDC were transformed to common horizontal and vertical datums of WGS84 geographic and Mean High Water, respectively, using proj4, gdal and VDatum. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection.
        • 2014-06-15T00:00:00 - Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
        • 2014-06-16T00:00:00 - Existing bare-earth DEMs were clipped based on the extents of newer lidar data. The DEMs were converted to xyz data for use in gridding.
        • 2014-07-01T00:00:00 - Lidar data was filtered and edited to 'bare-earth' using custom tools and Virtual Geomatics. Water surface returns were manually removed from the dataset.
        • 2014-07-15T00:00:00 - Lidar data files were converted to xyz data for use in gridding.
        • 2014-07-16T00:00:00 - xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 1/3 arc-second grid that interpolated to fill empty cells. Points extracted every 10 meters along the coastline were also included to ensure that the bathymetric grid reached zero at the coast. The resulting Arc ASCII grid was clipped to the coastline to remove values over land.
        • 2014-07-16T00:00:00 - xyz files of the topographic data were surfaced using GMT's 'surface' tool onto a 1/3 arc-second grid that interpolated to fill empty cells. Points extracted every 10 meters along the coastline were also included to ensure that the bathymetric grid reached zero at the coast. The resulting Arc ASCII grid was clipped to the coastline to remove values over water.
        • 2014-07-17T00:00:00 - xyz files for each input dataset were gridded using MB-System's 'mbgrid' tool, which utilizes a high-tension spline interpolation method to fill grid cells with no input elevation values. Preferential weighting was given to more recent, higher-accuracy datasets.
        • 2014-07-20T00:00:00 - The DEM was quantitatively evaluated by comparing with source datasets and with elevation values extracted from NGS geodetic monuments. It was visually evaluated by converting to UTM-zone coordinates (units of meters horizontally and vertically) and then creating a slope grid to identify gridding artifacts in the DEM.
        Source Datasets
        • Electronic Navigational Charts and Raster Nautical Charts
        • St. Croix, VI 1/3 arc-second MHW DEM
          • St. Thomas-St. John, VI 1/3 arc-second MHW DEM
            • U.S. Virgin Islands 1 arc-second MHW DEM
              • 2011 NOAA Bathymetric Lidar: U.S. Virgin Islands - St. Thomas, St. John, St. Croix (Salt River Bay, Buck Island)
                • NOAA CSC Digital Coast (download)
                  This centralized, user-friendly, and cost-effective information repository was developed by the NOAA Coastal Services Center for the coastal managers, planners, decision-makers, and technical users who are charged to manage the nations coastal and ocean resources to sustain vibrant coastal communities and economies.
                • Description of Source: Source Contribution: Topographic/Bathymetric LiDAR
                • Temporal extent used: 2011-01-29 to 2011-02-28
              • 2013 NOAA Lidar: U.S. Virgin Islands
                • NOAA CSC Digital Coast (download)
                  This centralized, user-friendly, and cost-effective information repository was developed by the NOAA Coastal Services Center for the coastal managers, planners, decision-makers, and technical users who are charged to manage the nations coastal and ocean resources to sustain vibrant coastal communities and economies.
                • Description of Source: Source Contribution: Topographic LiDAR ; Source Type: online
                • Temporal extent used: 2013-01-29 to 2013-02-28
              • 2007 US Army Corps of Engineers (USACE), Jacksonville District US Virgin Islands LiDAR
                • NOAA CSC Digital Coast (download)
                  This centralized, user-friendly, and cost-effective information repository was developed by the NOAA Coastal Services Center for the coastal managers, planners, decision-makers, and technical users who are charged to manage the nations coastal and ocean resources to sustain vibrant coastal communities and economies.
                • Description of Source: Source Contribution: Topographic/Bathymetric LiDAR
                • Temporal extent used: 2007-11-16 to 2007-11-29
              • 2003 U.S. Geological Survey (USGS) Experimental Advanced Airborne Research Lidar (EAARL): US Virgin Islands (St. John, St. Croix)
                • NOAA CSC Digital Coast (download)
                  This centralized, user-friendly, and cost-effective information repository was developed by the NOAA Coastal Services Center for the coastal managers, planners, decision-makers, and technical users who are charged to manage the nations coastal and ocean resources to sustain vibrant coastal communities and economies.
                • Description of Source: Source Contribution: Topographic/Bathymetric LiDAR
                • Temporal extent used: Unknown to
              Acquisition Information (collection)
              Instrument
                Platform
                • Digital Elevation Model
                Last Modified: 2017-12-01
                For questions about the information on this page, please email: dem.info@noaa.gov