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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.

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Distribution Formats
  • ESRI Arc ASCII (Version: 1)
    • File Compression: WINZIP
Distributor DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Publisher NOAA/PMEL/Center for Tsunami Research (NCTR)
oar.pmel.time-support@noaa.gov
Documentation links not available.
Publisher
  • NOAA/PMEL/Center for Tsunami Research (NCTR)
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
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.
Time Period: Unknown  to  Unknown
Spatial Reference System: urn:ogc:def:crs:EPSG::4326 urn:ogc:def:datum:EPSG::5868
Spatial Bounding Box Coordinates:
N: 62.00
S: 55.00
E: -147.00
W: -156.00
Spatial Coverage Map:
Themes
  • DEM > Digital Elevation Model
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • WDC/MGG, BOULDER > World Data Center for Marine Geology and Geophysics, Boulder
  • H: 1 meter - < 30 meters
  • V: < 1 meter
  • Coastal Relief
  • Gridded elevations
  • 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
Places
  • Continent > North America > United States of America > Southcentral Alaska
  • Alaska
  • Ocean > Pacific Ocean
  • Vertical Location > Land Surface
  • Vertical Location > Sea Floor
  • Kenai Peninsula Borough
  • Cook Inlet
Use Constraints No constraint information available
Fees Fee information not available.
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 
Lineage Statement Lineage statement not available.
Processor
  • NOAA/PMEL/Center for Tsunami Research (NCTR)
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.
  • Metadata imported.
Processing Environment Native Dataset Environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.4.1420

Metadata Last Modified: 2013-02-21

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