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Craig, Alaska 1/3 arc-second MHW Coastal Digital Elevation Model

browse graphicThumbnail of DEM
NOAA's National Geophysical Data Center (NGDC) 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 modeling 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. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal,
state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters).
Cite this dataset when used as a source.
  • ID not available.
gov.noaa.ngdc.mgg.dem:3548
XML
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 Barry W. Eakins
Research Scientist
NOAA National Centers for Environmental Information
303-497-6505
Barry.Eakins@noaa.gov
Time Period1912-01-01 to 2012-01-01
Spatial Reference Systemurn:ogc:def:crs:EPSG::4326urn:ogc:def:datum:EPSG::5868
Spatial Bounding Box Coordinates
N: 55.81
S: 55.04
E: -132.88
W: -133.91
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2012-06-29
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
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Publishers
  • NOAA National Centers for Environmental Information
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
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
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
  • Continent > North America > United States of America > Alaska
  • Ocean > Pacific Ocean > North Pacific Ocean
  • Ocean > Pacific Ocean > North Pacific Ocean > Gulf of Alaska
  • Vertical Location > Land Surface
  • Vertical Location > Sea Floor
Uncontrolled
  • Craig
  • Klawock
  • San Juan Bautista Island
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
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
  • 2012-03-30T00:00:00 - All datasets obtained by NGDC were converted to common horizontal and vertical datums of WGS84 geographic and Mean High Water, respectively, using conversion grids. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection.
  • 2012-04-16T00:00:00 - Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
  • 2012-05-11T00:00:00 - xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 1 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.
  • 2012-06-12T00:00:00 - 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.
  • 2012-06-25T00:00:00 - The DEM was qualitatively evaluated by comparing DEM 100-foot contours with USGS topographic quadrangles. 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.
Processing EnvironmentNative Dataset Environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.4.1420
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: BAG and hydrographic surveys ; Source Type: online
    • Temporal extent used: 1912-01-01 to 2009-01-01
  • USACE Hydrographic Surveys
    • USACE Alaska District Hydrographic Surveys (download)
      Digital database of hydrographic surveys in Alaska
    • Description of Source: Source Contribution: Hydrographic surveys ; Source Type: online
    • Temporal extent used: 2003-01-01 to 2007-01-01
  • Electronic Navigational Charts
    • OCS Electronic Navigational Charts (download)
      Digital database of NOAA nautical chart information.
    • Description of Source: Source Contribution: bathymetric sounding data ; Source Type: online
    • Time Instant: 2012-01-01
  • USGS NED topography
    • USGS National Elevation Dataset (download)
      Digital database of U.S. topography, in raster form (DEM)
    • Description of Source: Source Contribution: gridded topographic data ; Source Type: online
    • Time Instant: 2006-01-01
  • USFS unpublished topographic lidar surveys
    • Description of Source: Source Contribution: lidar topography ; Source Type: digital file
    • Temporal extent used: 2000-01-01 to 2002-01-01
  • Shuttle Radar Topography Mission (SRTM) vers.2
    • Shuttle Radar Topography Mission (download)
      global topography
    • Description of Source: Source Contribution: gridded topographic data ; Source Type: on web
    • Time Instant: 2000-01-01
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
    Operation
    • Tsunami Inundation Gridding Project
    Last Modified: 2022-03-25
    For questions about the information on this page, please email: dem.info@noaa.gov