NCEI (formerly NGDC)
EMMA logo
Back to Collection NOAA/NESDIS/NGDC/MGG/DEM
View Metadata As: Get Data, FAQ, HTML, 19139 XML
Assess Metadata For: Completeness, DOI Readiness, CSW Readiness, Components

24 arc-second Kenai Peninsula Bororugh Alaska Elevation Grid

The 24 arc-second Kenai Peninsula Bororugh Alaska Elevation Grid provides bathymetric data in ASCII raster format of 24 second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling
Cite this dataset when used as a source.
Distribution Formats
  • ESRI Arc ASCII (Version: 1)
    • File Specification: ASCII text version of ESRI ArcGIS raster format
    • File Compression: WINZIP
Distributor Distributor information not available
Dataset No POCs available for this dataset
Documentation links not available.
Date(s)
  • publication: 2004-06-23
Edition: 2004
Data Presentation Form: mapDigital
Dataset Progress Status Complete
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
Dataset acknowledgements not available.
Publisher(s)
    Publisher information not available.
Time Period: Unknown to Unknown
Spatial Reference System:
Spatial Bounding Box Coordinates:
N: 62.00
S: 55.00
E: -147.00
W: -156.00
Spatial Coverage Map:
Theme keywords NASA/GCMD Platform Keywords
  • DEM > Digital Elevation Model
NASA/GCMD Data Resolution Keywords
  • H: 1 meter - < 30 meters
  • V: < 1 meter
Uncontrolled
  • Coastal Relief
  • Gridded elevations
Place keywords NASA/GCMD Location Keywords
  • Continent > North America > United States of America > Southcentral Alaska
  • Alaska
  • Ocean > Pacific Ocean
  • Vertical Location > Land Surface
  • Vertical Location > Sea Floor
Uncontrolled
  • Kenai Peninsula Borough
  • Cook Inlet
Keywords
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
Keywords
    Keywords
      Use Constraints No constraint information available
      Fees Fee information not available.
      Lineage information for: dataset
      Processing Steps
      • Each raw data source was converted into ESRI ArcGIS 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. A polyline shapefile was created to represent the coastline. The coastline is a culmination of USGS hydrographic vectors, USACE coastline, and AKRR coastline vectors. A TIN (Triangulated Irregular Network) was created using bathymetric data point and coastline points using ArcInfo CREATETIN. An 8-second grid was created using TINLATTICE. The data was assessed for quality using ArcView Spatial Analyst. The grid was compared to its raw dataset. The 8-second grid was resampled to 24 seconds and clipped to requested coordinates. The grid was updated with recent datasets surrounding Homer-Seldovia, Kodiak, and Seward. New data was incorporated into the grids by creating new TINs for the regional area. Data were assessed for quality by comparing with original sources, corresponding sources, and control data. Continuity between old and new data were assessed and errors were corrected. 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 9.2.4.1420
      Source Datasets
      • GEODAS Vol 2, Ver 4.1 and Global Relief
        • Description of Source: Source Contribution: bathymetric data values; Source Type: online
        • Temporal extent used: 1890-01-01 to 2001-01-01
      • Electronic Nautical Charts
        • Description of Source: Source Contribution: bathymetric data values; Source Type: online
        • Temporal extent used: 2001-01-01 to 2003-01-01
      • Multibeam surveys for Seward OPR-P359-RA-01
        • Description of Source: Source Contribution: bathymetric data values; Source Type: CD-ROM
        • Temporal extent used: Unknown to
      • 1:25000 and 1:63360 hydrographic vectors
        • Description of Source: Source Contribution: shoreline, mean high water line; Source Type: online
        • Temporal extent used: to
      • Homer, Seldovia, and Seward Hydrographic Surveys
        • Description of Source: Source Contribution: bathymetric and coastline data values; Source Type: online
        • Temporal extent used: 2000-01-01 to 2002-01-01
      • Bathymetric Condition Survey
        • Description of Source: Source Contribution: bathymetric and coastline data values; Source Type: CD-ROM
        • Temporal extent used: Unknown to
      Last Modified: 2015-09-03
      For questions about the information on this page, please email: