Yakutat, Alaska 1 arc-second DEM

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The 1-second Yakutat Alaska Elevation Grid provides bathymetric data in ASCII raster format of 1-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling
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    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).
Distribution Formats Format not available
    Distributor DEM Information
    DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Dataset Publisher NOAA Center for Tsunami Research
    NOAA/PMEL/Center for Tsunami Research (NCTR)
    Time Period 2003-07-01 to 2003-08-01
    Spatial Reference System urn:ogc:def:crs:EPSG::4326urn:ogc:def:datum:EPSG::5868
    Spatial Bounding Box Coordinates
    N: 59.59
    S: 59.43
    E: -139.6
    W: -139.93
    Spatial Coverage Map
    Documentation links not available.
    Publication Dates
    • publication: 2003-09-02
    Edition 2003
    Data Presentation Form mapDigital
    Dataset Progress Status Complete - production of the data has been completed
    Data Update Frequency Irregular
    Supplemental Information
    This grid was developed through funding from the National Tsunami Hazard Mitigation Program. It will be updated as better data become available.
    Purpose This grid was constructed for use in tsunami inundation modeling
    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.
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    • NOAA/PMEL/Center for Tsunami Research (NCTR)
    Theme keywords NASA/GCMD Platform Keywords
    • Models/Analyses > DEM > Digital Elevation Model
    NASA/GCMD Data Resolution Keywords
    • 1 meter - < 30 meters
    • < 1 meter
    • Coastal Relief
    • Gridded elevations
    Global Change Master Directory (GCMD) Service Keywords
    Data Center keywords Global 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
    Place keywords Global Change Master Directory (GCMD) Location Keywords
    • Continent > North America > United States of America > Alaska
    • Ocean > Pacific Ocean
    • Vertical Location > Land Surface
    • Vertical Location > Sea Floor
    • Southeast Alaska
    • Alaska
    • Gulf of Alaska
    • Yakutat
    Project keywords Global Change Master Directory (GCMD) Project Keywords
    • ICSU-WDS > International Council for Science - World Data System
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
    Use Constraints No 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: 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.
    Lineage information for: dataset
    • NOAA/PMEL/Center for Tsunami Research (NCTR)
    • NOAA/PMEL/Center for Tsunami Research (NCTR)
    Processing Steps
    • 2003-09-02T00:00:00 - Each raw data source was converted into ESRI Arc-compatible formats. The resulting files were converted and adjusted to predetermined projection (geographic), horizontal datum (NAD27), and vertical datum (MHW) using the ArcInfo PROJECT command and ArcView Spatial Analyst MAP CALCULATOR algorithm. An ArcView polyline shapefile was created to represent the coastline. The coastline is based on USGS hydrographic vectors. The USGS coastline was compared to high-resolution NGS vector shoreline; no discernible difference was found between the two datasets. Bathymetric contours and data points were digitized from raster charts and images. Each dataset was analyzed for quality. Anomalies were removed; approximately 30 points were removed from NOS hydrographic survey datasets. Overlapping contours and points were assessed for matching. Bathymetric data was prioritized by quality and date. Recent surveys superseded older data. A TIN (Triangulated Irregular Network) was created using bathymetric data and coastline vectors using ArcView 3D Spatial Analyst. A 0.88-arcsecond grid was created. The grid was contoured at 1-, and 5-meter contours to compare with the original datasets. Problematics areas were redone by adding additional contours in areas of low point density. The bathymetric grid was clipped to requested coordinates. USGS 30-meter DEMs were merged into a single grid and analyzed for quality. The dataset was compare to hydrographic and hypsographic contours, as well as USGS, NGS, and COOPs control points. Problematics areas (airport, grid overlaps) were redone by creating TINs using source data. The topographic grid was clipped to requested coordinates. The topographic and bathymetric grids were merged into a single 0.88-arcsecond grid. The 0.88-second grid was compared to the Yakutat AK 2.66-second grid to ensure continuity and quality. A gridmatching graphic (yak3_1.jpg) was produced to verify nest matching for modeling efforts. The final grid was analyzed for blunders, systematic errors, and logical consistency.
    • 2008-11-04T00:00:00 - Metadata imported.
    Processing Environment Native Dataset Environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog
    Source Datasets
    • Electronic Nautical Charts
      • high resolution vector shoreline, survey control points
        • water level station data, tidal datums
        • global relief, hydrographic surveys, bathymetric maps
          • hypsographic and hydrographic vector data and dems
            Last Modified: 2017-11-09
            For questions about the information on this page, please email: dem.info@noaa.gov