Metadata Identifier: gov.noaa.ngdc.mgg.dem:703

Aggregation Info | Bands | Citations | Constraints | Coverage Descriptions | Dimensions | Extents | Formats | Geographic Bounding Box
Georectified Information | Georeferenceable Information | Identifiers | Instruments | Mediums | OnlineResources | Operations
Platforms | Process Steps | Range Elements | Reference Systems | Responsible Parties | Series | Sources | Spatial Grids | Temporal Extents

MD_DataIdentification

Count Component Title Abstract
1 Southern Alaska Coastal Relief Model NOAA's National Geophysical Data Center (NGDC) is building coastal-relief models (CRM) for select U.S. coastal regions. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the National , the United States Geological Survey (USGS), the National Aeronautics and Space Administration, the Office of Coast Survey (OCS) and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean Sea Level (MSL) and horizontal datum of World Geodetic System 1984 (WGS 84). Grid spacings for the Southern Alaska CRM is 24 arc-seconds (~720 meters).
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SV_Identification

Count Component Title Type
1 Color Shaded Relief ArcGIS Map Service Digital Elevation Models: Color Shaded Relief ArcGIS Image Service ArcGIS Image Service
1 Footprints ArcGIS Map Service NCEI Digital Elevation Model Extents ArcGIS Feature Layer ArcGIS Feature Service
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CI_Citation

Count Component Title Date Citation Identifier
1 Coastal Relief Model of Southern Alaska: Procedures, Data Sources, and Analysis
    2011-06-24
1 Digital Elevation Models: Color Shaded Relief ArcGIS Image Service
    2011-10-19
1 Electronic Navigational Chart (ENC) soundings
    2009-01-01
1 GCMD Data Center Keywords Global Change Master Directory (GCMD) Data Center Keywords
    2020-01-09
1 GCMD Horizontal Resolution Keywords Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
    2020-01-09
1 GCMD Location Keywords Global Change Master Directory (GCMD) Location Keywords
    2020-01-09
1 GCMD Platform Keywords Global Change Master Directory (GCMD) Platform Keywords
    2020-01-09
1 GCMD Project Keywords Global Change Master Directory (GCMD) Project Keywords
    2020-01-09
1 GCMD Science Keywords Global Change Master Directory (GCMD) Science Keywords
    2020-01-09
2 GCMD Service Keywords Global Change Master Directory (GCMD) Service Keywords
    2020-01-09
1 GCMD Vertical Resolution Keywords Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
    2020-01-09
1 Global Self-consistent, Hierarchical, High-resolution Shoreline (GSHHS)
    2005-01-01
1 International DOI Foundation (IDF)
    1 Mean Sea Level depth
      2012-08-10
    1 NCEI Digital Elevation Model Extents ArcGIS Feature Layer
      2022-10-24
    1 NGA Global Shoreline
      2000-01-01
    1 NGDC Bathymetric-topographic DEMs
      2009-01-01
    1 NGDC ETOPO1
      2008-01-01
    1 NGDC Multibeam Bathymetry Database
      2008-01-01
    1 NOAA National Centers for Environmental Information
      1 NOS Hydrographic Surveys
        2009-01-01
      1 Shuttle Radar Topography Mission (SRTM) processed by CGIAR
        2008-01-01
      1 Southern Alaska Coastal Relief Model
        2009-06-30
      doi:10.7289/V58G8HMQ
      NCEI Metadata ID: gov.noaa.ngdc.mgg.dem:703
      1 U.S. Fish and Wildlife Service coastline
        2006-01-01
      1 USGS NED topography
        2008-01-01
      2 Uncontrolled
        1 World Geodetic System 1984
          2007-08-27
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        CI_Series

        none found
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        CI_ResponsibleParty

        Count Component Individual Organization Position Email Role Linkage
        2 resourceProvider https://epsg.org/crs_4326/WGS-84.html
        11 https://www.ngdc.noaa.gov/mgg/dat/dems/regional_tr/crm_southak.pdf
        1 B.W. Eakins originator
        1 Barry Eakins Barry W. Eakins NOAA National Centers for Environmental Information Research Scientist Barry.Eakins@noaa.gov pointOfContact
        8 DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce publisher https://ngdc.noaa.gov/mgg/coastal/coastal.html
        1 E. Lim originator
        2 EPSG Registry European Petroleum Survey Group publisher https://epsg.org/home.html
        1 NASA > National Aeronautics and Space Administration originator
        9 GCMD Landing Page NASA Goddard Space Flight Center, Earth Science Data and Information System custodian https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
        2 NCEI GIS Team NCEI GIS Team NOAA National Centers for Environmental Information ncei.gis@noaa.gov pointOfContact
        1 NGA > National Geospatial-Intelligence Agency originator
        1 NGDC > National Geophysical Data Center originator
        3 NCEI (pointOfContact) NOAA National Centers for Environmental Information ncei.info@noaa.gov pointOfContact https://www.ncei.noaa.gov/contact
        1 NOAA National Centers for Environmental Information publisher
        1 NCEI (distributor) NOAA National Centers for Environmental Information ncei.info@noaa.gov distributor https://www.ncei.noaa.gov/contact
        1 NOAA National Geophysical Data Center author
        4 NOAA National Geophysical Data Center originator
        1 OCS > NOAA Office of Coast Survey originator
        1 R. Wigley originator
        1 U.S. FWS > United States Fish and Wildlife Service originator
        1 USGS > United States Geological Survey originator
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        CI_OnlineResource

        Count Component Linkage Name Description Function
        1 http://msi.nga.mil/NGAPortal/MSI.portal National Geospatial-Intelligence Agency The NGA Global Shoreline Data is an unclassified vector dataset generated by Earth Satellite Corporation download
        1 http://seamless.usgs.gov/ USGS National Elevation Dataset Digital database of U.S. topography, in raster form (DEM) download
        1 http://srtm.csi.cgiar.org/ Shuttle Radar Topography Mission/CGIAR global topography download
        1 http://www.fws.gov/ Seamless digital coastline of the state of Alaska compiled from a variety of sources. The U.S. Fish and Wildlife Service has compiled a seamless digital coastline of the State of Alaska from a variety of sources, including: the National Hydrography Dataset, NOAA nautical charts, U.S. Fish and Wildlife Service, National Geographic Topo Software, U.S. Army Corps of Engineers, and Alaska Department of Natural Resources. download
        1 http://www.nauticalcharts.noaa.gov/mcd/enc/index.htm Electronic Navigational Chart (ENC) soundings ENC soundings extracted from NOS charts download
        1 https://epsg.org/crs_4326/WGS-84.html WGS 84 GML of World Geodetic System 1984 coordinate reference system. information
        1 https://epsg.org/crs_5715/MSL-depth.html MSL depth GML for Vertical CRS in EPGS Registry. information
        2 https://epsg.org/home.html European Petroleum Survey Group Geodetic Parameter Registry Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. search
        1 https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer/WMSServer?request=GetCapabilities&service=WMS Digital Elevation Models Global Mosaic (Color Shaded Relief) Web Map Service (WMS) Capabilities document for Open Geospatial Consortium Web Map Service for Digital Elevation Models Global Mosaic (Color Shaded Relief) search
        1 https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer Digital Elevation Models Global Mosaic (Color Shaded Relief) ArcGIS Image Service REST endpoint for Digital Elevation Models Global Mosaic (Color Shaded Relief) ArcGIS image service search
        1 https://ngdc.noaa.gov/mgg/coastal/coastal.html Integrated Models of Coastal Relief at NGDC Please see website for more information about Coastal DEMs. information
        1 https://noaa.maps.arcgis.com/home/item.html?id=0afa88a1701749dbbf76fcadca4f77f3 NOAA GeoPlatform Entry for NCEI Digital Elevation Model (DEM) Extents NOAA GeoPlatform listing for NCEI Digital Elevation Model (DEM) Extents information
        1 https://noaa.maps.arcgis.com/home/item.html?id=c876e3c96a8642ab8557646a3b4fa0ff NOAA GeoPlatform Entry for DEM Global Mosaic (Elevation Values) NOAA GeoPlatform listing for DEM Global Mosaic (Elevation Values) information
        1 https://noaa.maps.arcgis.com/home/item.html?id=d41f39c8a6684c54b62c8f1ab731d5ad NOAA GeoPlatform Entry for DEM Footprints ArcGIS Map Service A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available. search
        1 https://noaa.maps.arcgis.com/home/item.html?id=e11ebaeb19544bb18c2afe440f063062 NOAA GeoPlatform Entry for DEM Global Mosaic (Color Shaded Relief) Shaded relief visualization of a global seamless bathymetry/topography mosaic of digital elevation models at NOAA/NCEI. information
        1 https://noaa.maps.arcgis.com/home/item.html?id=e9ba2e7afb7d46cd878b34aa3bfce042 Digital Elevation Models Mosaic (Individual DEMs) An image service providing access to bathymetric/topographic digital elevation models stewarded at NOAA's National Centers for Environmental Information. Either individual DEMs or small subsets can be accessed through this service. search
        1 https://noaa.maps.arcgis.com/home/item.html?id=feb3c625dc094112bb5281c17679c769 NOAA GeoPlatform Entry for Digital Elevation Models Global Mosaic (Color Shaded Relief) NOAA GeoPlatform listing for Digital Elevation Models Global Mosaic (Color Shaded Relief) information
        1 https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/ncei_dem_extents/FeatureServer NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service REST endpoint for NCEI Digital Elevation Model (DEM) Extents ArcGIS Feature Service search
        9 https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information
        3 https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information
        1 https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.dem:703/html Metadata Landing Page information
        1 https://www.ncei.noaa.gov/products/coastal-elevation-models Coastal Elevation Models at NCEI information
        1 https://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html NOS Hydrographic Survey Database Digital database of NOS hydrographic surveys that date back to the late 19th century. download
        1 https://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html NGDC Multibeam Bathymetry Database Multibeam swath sonar survey data download
        1 https://www.ngdc.noaa.gov/mgg/dat/dems/regional_tr/crm_southak.pdf Coastal Relief Model of Southern Alaska: Procedures, Data Sources and Analysis Report describing the development of the Southern Alaska CRM download
        1 https://www.ngdc.noaa.gov/mgg/global/global.html NGDC ETOPO1 Integrated bathymetric-topographic global DEM download
        1 https://www.ngdc.noaa.gov/mgg/inundation/tsunami/ NGDC Bathymetric-topographic DEMs Integrated bathymetric-topographic DEMs download
        1 https://www.ngdc.noaa.gov/mgg/shorelines/gshhs.html National Geophysical Data Center GSHHS is a high-resolution shoreline data set created from two well-known, public domain data sets. download
        1 https://www.ngdc.noaa.gov/thredds/dodsC/crm/crm_southak.nc.html OPeNDAP Dataset Access Form OPeNDAP Dataset Access Form download
        1 https://www.ngdc.noaa.gov/thredds/fileServer/crm/crm_southak.nc Download NetCDF File Download NetCDF File download
        1 https://www.ngdc.noaa.gov/thredds/ncml/crm/crm_southak.nc?catalog=https%3A%2F%2Fwww.ngdc.noaa.gov%2Fthredds%2Fcatalog%2Fcrm%2Fcatalog.html&dataset=crmDatasetScan%2Fcrm_southak.nc NetCDF Markup Language file NetCDF Markup Language file information
        1 https://www.ngdc.noaa.gov/thredds/ncss/crm/crm_southak.nc/dataset.html Download a subset of the NetCDF Download a subset of the NetCDF download
        1 https://www.ngdc.noaa.gov/thredds/wcs/crm/crm_southak.nc?service=WCS&version=1.0.0&request=GetCapabilities Web Coverage Service GetCapabilities Web Coverage Service GetCapabilities information
        1 https://www.ngdc.noaa.gov/thredds/wms/crm/crm_southak.nc?service=WMS&version=1.3.0&request=GetCapabilities Web Map Service GetCapabilities Web Map Service GetCapabilities information
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        MD_Identifier or RS_Identifier

        Count Component Code
        1 NCEI Metadata ID: gov.noaa.ngdc.mgg.dem:703
        1 doi:10.7289/V58G8HMQ
        1 urn:ogc:def:crs:EPSG::4326
        1 urn:ogc:def:crs:EPSG::5715
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        EX_Extent

        Bounding Box Temporal Extent
        Count Component Description West East North South Start End
        1 170 230 66.50 48.50 1888-01-01 2009-01-01
        2 -180 180 90 -90
        1 1888-01-01 2005-01-01
        1 1986-01-01 2005-01-01
        1
        1
        1 2007-01-01 2008-01-01
        1 1999-01-01 2003-01-01
        1 2006-01-01 2009-01-01
        1 1995-01-01 2006-01-01
        1 1998-01-01 2002-01-01
        1 2003-01-01 2010-01-01
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        EX_GeographicBoundingBox

        Count Component West East North South
        1 170 230 66.50 48.50
        2 -180 180 90 -90
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        EX_TemporalExtent

        Count Component Start End
        1 1888-01-01 2009-01-01
        1 1888-01-01 2005-01-01
        1 1986-01-01 2005-01-01
        2
        1 2007-01-01 2008-01-01
        1 1999-01-01 2003-01-01
        1 2006-01-01 2009-01-01
        1 1995-01-01 2006-01-01
        1 1998-01-01 2002-01-01
        1 2003-01-01 2010-01-01
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        MD_Format

        Count Component Name Version specification
        1 netCDF 4 Classic netCDF 4 Classic
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        MD_Medium

        none found
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        MD_Constraints

        Count Component Use Limitation
        1 not for navigation 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.
        1 copyright statement Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
        1 These data 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 official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: http://www.nauticalcharts.noaa.gov.
        1 These data 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 official navigation products, please refer to the U.S. nautical charts available from the NOAA Office of Coast Survey: https://www.nauticalcharts.noaa.gov.
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        MD_ReferenceSystem

        Count Component Code Authority Title
        1 WGS84 urn:ogc:def:crs:EPSG::4326 World Geodetic System 1984
        1 MSL urn:ogc:def:crs:EPSG::5715 Mean Sea Level depth
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        MD_GridSpatialRepresentation

        Count Component Number of Dimensions Cell Geometry Code
        1 3 area
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        MD_Georeferenceable or MI_Georeferenceable

        none found
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        MD_Georectified or MI_Georectified

        none found
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        MD_Dimension

        Count Component Name Code Size
        1 row 9001
        1 column 2701
        1 vertical 1
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        MD_CoverageDescription or MI_CoverageDescription

        none found
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        MD_Band or MI_Band

        none found
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        MI_RangeElementDescription

        none found
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        MD_AggregateInformation

        Count Component Title Code Association Type Code
        1 Coastal Relief Model of Southern Alaska: Procedures, Data Sources, and Analysis crossReference
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        LE_Source or LI_Source

        Count Component Title Date Description
        1 Electronic Navigational Chart (ENC) soundings 2009-01-01 Source Contribution: ENC soundings extracted from NOS charts ; Source Type: web
        1 Global Self-consistent, Hierarchical, High-resolution Shoreline (GSHHS) 2005-01-01 Source Contribution: shoreline ; Source Type: online
        1 NGA Global Shoreline 2000-01-01 Source Contribution: shoreline ; Source Type: online
        1 NGDC Bathymetric-topographic DEMs 2009-01-01 Source Contribution: NGDC Bathymetric-topographic DEMs ; Source Type: online
        1 NGDC ETOPO1 2008-01-01 Source Contribution: bathymetry and topography ; Source Type: online
        1 NGDC Multibeam Bathymetry Database 2008-01-01 Source Contribution: Multibeam bathymetry data ; Source Type: online
        1 NOS Hydrographic Surveys 2009-01-01 Source Contribution: hydrographic surveys ; Source Type: online
        1 Shuttle Radar Topography Mission (SRTM) processed by CGIAR 2008-01-01 Source Contribution: gridded topography ; Source Type: online
        1 U.S. Fish and Wildlife Service coastline 2006-01-01 Source Contribution: composite shoreline ; Source Type: online
        1 USGS NED topography 2008-01-01 Source Contribution: Topographic DEM ; Source Type: online
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        LE_ProcessStep or LI_ProcessStep

        Count Component DateTime Description
        1 2008-06-15T00:00:00 All datasets obtained by NGDC were converted to common horizontal datum of WGS 84 geographic using FME or ArcGIS. They were also converted to common file format, ESRI point shapefiles or digital rasters, for visualization and inspection.
        1 2008-07-02T00:00:00 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.
        1 2009-02-15T00:00:00 xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 20 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.
        1 2009-05-20T00:00:00 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. Gridding was performed in quadrants, each with a 5% data buffer. The grids were imported in ArcGIS and seamlessly merged to create the final DEM.
        1 2009-05-30T00:00:00 The DEM was quantitatively evaluated by comparing the grid against source data files.
        1 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.
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        MI_Operation

        none found
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        MI_Platform

        none found
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        MI_Instrument

        none found
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