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St. Thomas and St. John, U.S. Virgin Islands 1/3 arc-second MHW Coastal Digital Elevation Model

browse graphicThumbnail of DEM
The 1/3 arc-second St. Thomas and St. John, U.S. Virgin Islands Coastal Digital Elevation Model 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:5030
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Search Data
  • DEM text search (search)
    Text search for locating completed and planned DEMs.
  • Bathymetric Data Viewer (search)
    The Bathymetric Data Viewer is an interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI).
Download Data
Distribution Formats
  • netCDF (Version: 4 Classic)
DistributorDEM Information
NOAA National Centers for Environmental Information
dem.info@noaa.gov
Dataset Point of Contact DEM Information
NOAA National Centers for Environmental Information
dem.info@noaa.gov
Time Period1909-01-01 to 2012-01-01
Spatial Reference Systemurn:ogc:def:crs:EPSG::4326urn:ogc:def:datum:EPSG::5868
Spatial Bounding Box Coordinates
N: 18.48
S: 18.17
E: -64.64
W: -65.15
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2014-04-30
EditionSecond
Data Presentation FormmapDigital
Dataset Progress StatusComplete - production of the data has been completed
Data Update Frequency As needed
PurposeDeveloped 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
  • Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
  • Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
Originators
  • NOAA National Centers for Environmental Information
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Custodians
  • NOAA National Centers for Environmental Information
Publishers
  • NOAA National Centers for Environmental Information
Theme keywordsGlobal 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
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
Data Center keywordsGlobal Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Platform keywordsGlobal Change Master Directory (GCMD) Platform Keywords
  • Models/Analyses > DEM > Digital Elevation Model
Place keywordsGlobal 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
  • St. John
  • St. Thomas
Project keywordsGlobal Change Master Directory (GCMD) Project Keywords
  • ICSU-WDS > International Council for Science - World Data System
  • NOAA OneStop Project
Data Resolution keywordsGlobal 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
Use ConstraintsNo constraint information available
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Fees Fee information not available.
Lineage information for: dataset
Processor
  • NOAA National Centers for Environmental Information
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. Thomas-St. John, VI 1/3 arc-second MHW DEM
    • Description of Source: Source Contribution: bare-earth DEMs
    • Temporal extent used: 1909-01-01 to 2010-01-01
  • 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
    • Time Instant: 2003-01-01
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
    Platform
    • Digital Elevation Model
    Last Modified: 2022-03-25
    For questions about the information on this page, please email: dem.info@noaa.gov