Eastern Canada 3 arc-second Bathymetric Digital Elevation Model

NOAA's National Centers for Environmental Information 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 warning 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.
Cite this dataset when used as a source.
  • ID not available.
gov.noaa.ngdc.mgg.dem:11503
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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
    Coverage Description ISO valid extents for Easter Island 3 sec. DEM
    Time Period
    Spatial Reference System urn:ogc:def:crs:EPSG::4326urn:ogc:def:datum:EPSG::5831
    Spatial Bounding Box Coordinates
    N: 52.00
    S: 41.00
    E: -42.00
    W: -71.00
    Spatial Coverage Map
    General Documentation
    Associated Resources
    Publication Dates
    • publication: 2015-06-15
    Edition First
    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
    • 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 Geophysical Data Center. Not subject to copyright protection within the United States.
    Originators
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Collaborators
    • NOAA Center for Tsunami Research
      NOAA/PMEL/Center for Tsunami Research (NCTR)
    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 and Services 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 > Topographical Relief Maps
    • Earth Science > Oceans > Coastal Processes > Coastal Elevation
    Uncontrolled
    • Coastal Relief
    • Gridded elevations
    • Integrated bathymetry and topography
    Platform keywords Global Change Master Directory (GCMD) Platform Keywords
    • Models/Analyses > DEM > Digital Elevation Model
    Place keywords Global Change Master Directory (GCMD) Location Keywords
    • Continent > North America > Canada
    • Vertical Location > Land Surface
    • Vertical Location > Sea Floor
    Uncontrolled
    • Canada
    • Gulf of Maine
    • Bay of Fundy
    • Gulf of St. Lawrence
    • New Brunswick
    • Quebec
    • Newfoundland
    • Nova Scotia
    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
    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
        • 2013-04-01T00:00:00 - All datasets obtained by NGDC were converted to common horizontal datum of WGS 84 geographic using ArcGIS. They were also converted to common file format, ESRI point shapefiles or digital rasters, for visualization and inspection.
        • 2015-05-02T00:00:00 - Datasets were visually inspected with ArcGIS and QT Modeler for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
        • 2015-06-01T00:00:00 - xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 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 imported into ArcGIS and clipped to the coastline to remove values over land.
        • 2015-06-30T00:00:00 - The DEM was quantitatively evaluated by comparing the grid against source data files.
        Processing Environment Native Dataset Environment: Microsoft Windows 7 Enterprise; ESRI ArcGIS 10.3.1.4959
        Source Datasets
        • NOS Hydrographic Surveys
          • NOS Hydrographic Survey Database (download)
            Digital database of NOS hydrographic surveys that date back to the late 19th century.
          • Description of Source: Source Contribution: hydrographic surveys ; Source Type: online
          • Temporal extent used: 1930-01-01 to 2011-01-01
        • NGDC Multibeam Bathymetry Database
          • NGDC Multibeam Bathymetry Database (download)
            Multibeam swath sonar survey data
          • Description of Source: Source Contribution: Multibeam bathymetry data ; Source Type: online
          • Temporal extent used: 1981-01-01 to 2012-01-01
        • Electronic Navigational Chart (ENC) digital coastline and soundings
        • NGDC ETOPO1
          • NGDC ETOPO1 (download)
            Integrated bathymetric-topographic global DEM
          • Description of Source: Source Contribution: bathymetry; Source Type: online
          • Temporal extent used: 1940-01-01 to 2008-01-01
        • Canadian Hydrographic Service Multibeam bathymetry
          • Canadian Hydrographic Service (CHS) (download)
            CHS multibeam survey data was provided to NGDC by CHS.
          • Description of Source: Source Contribution: bathymetry
          • Temporal extent used: 1996-01-01 to 2015-04-01
        Last Modified: 2017-11-13
        For questions about the information on this page, please email: dem.info@noaa.gov