Metadata Identifier: gov.noaa.ngdc.mgg.dem:11521

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 Nikolski, Alaska 1/3 arc-second MHHW Coastal Digital Elevation Model NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's (NTHMP) efforts to improve community preparedness and hazard mitigation. These integrated bathymetric-topographic DEMs are used to support tsunami and coastal inundation mapping. 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 various vertical and horizontal datums depending on the specific modeling requirements of each State. For specific datum information on each DEM, refer to the appropriate DEM documentation. Cell sizes also vary depending on the specification required by modelers in each State, but typically range from 8/15 arc-second (~16 meters) to 8 arc-seconds (~240 meters).
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SV_Identification

Count Component Title Type
1 DEM Global Mosaic ArcGIS Image Service Digital Elevation Model Global Mosaic 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 ASTER topography
    2009-01-01
1 DTM survey data
    2014-04-15
1 Data Stewardship Maturity Report for Nikolski v2, Alaska 1/3 arc-second MHHW Coastal Digital Elevation Model
    2022
1 Digital Elevation Model Global Mosaic ArcGIS Image Service
    2016-06-14
1 Digital Elevation Model of Nikolski, Alaska: Procedures, Data Sources, and Analysis
    2014-07-24
1 ETOPO1 1 Arc-Minute Global Relief Model
    2008-01-01
1 GPS Elevation points
    2014-04-01
1 Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
    1 Global Change Master Directory (GCMD) Location Keywords
      1 Global Change Master Directory (GCMD) Platform Keywords
        1 GCMD Project Keywords Global Change Master Directory (GCMD) Project Keywords
          2020-01-09
        1 Global Change Master Directory (GCMD) Science and Services Keywords
          2 NASA/Global Change Master Directory (GCMD) Earth Science Services Keywords Global Change Master Directory (GCMD) Service Keywords
            2020-01-09
          1 Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
            1 Mean Higher High Water height
              2012-08-05
            1 NASA/GCMD Location Keywords
              1 NCEI Digital Elevation Model Extents ArcGIS Feature Layer
                2022-10-24
              1 NGDC Multibeam Bathymetry Database
                2008-01-01
              1 NOS Hydrographic Surveys
                2008-01-01
              1 NTHMP DEM Project
                2009-12-01
              1 Nikolski, Alaska 1/3 arc-second MHHW Coastal Digital Elevation Model
                2014-07-24
              1 Shuttle Radar Topography Mission (SRTM)
                2008-01-01
              1 USGS NED topography
                2008-01-01
              2 Uncontrolled
                1 World Geodetic System 1984
                  2007-08-27
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                CI_Series

                Count Component Name Issue Identification Page
                1 NOAA Coastal Inundation DEMs Named by primary coastal city, state in DEM.
                1 NTHMP DEMs Nikolski, Alaska 1/3 arc-second MHHW DEM
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                CI_ResponsibleParty

                Count Component Individual Organization Position Email Role Linkage
                2 resourceProvider https://epsg.org/crs_4326/WGS-84.html
                12 https://doi.org/10.25923/gjyd-by81
                1 > Geophysical Institute at the University of Alaska, Fairbanks originator
                1 Barry Eakins Barry W. Eakins NOAA National Centers for Environmental Information Research Scientist Barry.Eakins@noaa.gov pointOfContact
                1 DCRA data > DCRA originator
                9 DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce publisher https://www.ncei.noaa.gov/products/coastal-elevation-models
                4 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce originator
                1 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce publisher
                1 DOI/USGS > U.S. Geological Survey, Department of the Interior originator
                2 EPSG Registry European Petroleum Survey Group publisher https://epsg.org/home.html
                1 Kelly Carignan Kelly Carignan NOAA National Centers for Environmental Information kelly.carignan@noaa.gov pointOfContact
                1 METI/NASA > Ministry of Economy, Trade, and Industry of Japan and the U.S. National Aeronautics and Space Administration originator
                1 NASA > National Aeronautics and Space Administration originator
                3 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 NOAA Institutional Repository publisher
                4 DEM Info NOAA National Centers for Environmental Information DEM Information dem.info@noaa.gov pointOfContact
                2 NCEI (publisher) NOAA National Centers for Environmental Information publisher
                1 No Title NOAA National Centers for Environmental Information originator
                1 DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce NOAA National Centers for Environmental Information custodian
                1 National Tsunami Hazard Mitigation Program (NTHMP) collaborator
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                CI_OnlineResource

                Count Component Linkage Name Description Function
                1 http://commerce.alaska.gov/dnn/dcra/Home.aspx AutoCAD survey data download
                1 http://ned.usgs.gov/ USGS National Elevation Dataset Digital database of U.S. topography, in raster form (DEM) download
                1 http://srtm.usgs.gov/ Shuttle Radar Topography Mission global topography download
                1 http://www.gi.alaska.edu/ . download
                1 http://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 http://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html NGDC Multibeam Bathymetry Database Multibeam swath sonar survey data download
                1 http://www.ngdc.noaa.gov/mgg/global/global.html ETOPO1 Global Relief Model global relief model integrating bathymetric and topographic datasets download
                1 https://doi.org/10.25923/gjyd-by81 DSMR Publication at the NOAA Institutional Repository Report documenting the Scientific Data Stewardship Maturity for this dataset. information
                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_5869/MHHW-height.html MHHW height GML for mean higher high water vertical coordinate reference system (in meters) available from the epsg-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/ImageServer DEM Global Mosaic (Elevation Values) ArcGIS Image Service REST endpoint for DEM Global Mosaic (Elevation Values) ArcGIS Image Service search
                1 https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer DEM Global Mosaic (Color Shaded Relief) ArcGIS Image Service This service provides a color shaded relief visualization of the data. The elevations/depths are displayed using this color ramp: https://gis.ngdc.noaa.gov/viewers/images/dem_color_scale.png. search
                1 https://gis.ngdc.noaa.gov/arcgis/services/DEM_mosaics/DEM_global_mosaic_hillshade/ImageServer/WMSServer?request=GetCapabilities&service=WMS DEM Global Mosaic (Color Shaded Relief) WMS Capabilities document for Open Geospatial Consortium Web Map Service for DEM Global Mosaic (Color Shaded Relief) search
                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
                2 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
                2 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
                2 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://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
                3 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
                1 DEM Map Search https://www.ncei.noaa.gov/maps/bathymetry/ Bathymetric Data Viewer 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). search
                2 https://www.ncei.noaa.gov/products/coastal-elevation-models Coastal Elevation Models at NCEI information
                1 DEM Text Search https://www.ngdc.noaa.gov/mgg/coastal DEM text search Text search for locating completed and planned DEMs. search
                1 https://www.ngdc.noaa.gov/mgg/dat/dems/regional_tr/nikolski_13_mhhw_2014.pdf Digital Elevation Model of Nikolski, Alaska: Procedures, Data Sources and Analysis Report describing the development of the Nikolski, Alaska DEM download
                1 https://www.ngdc.noaa.gov/thredds/dodsC/regional/nikolski_13_mhhw_2014.nc.html OPeNDAP Dataset Access Form OPeNDAP Dataset Access Form download
                1 https://www.ngdc.noaa.gov/thredds/fileServer/regional/nikolski_13_mhhw_2014.nc Download NetCDF File Download NetCDF File download
                1 https://www.ngdc.noaa.gov/thredds/ncml/regional/nikolski_13_mhhw_2014.nc?catalog=https%3A%2F%2Fwww.ngdc.noaa.gov%2Fthredds%2Fcatalog%2Fregional%2Fcatalog.html&dataset=regionalDatasetScan%2Fnikolski_13_mhhw_2014.nc NetCDF Markup Language file NetCDF Markup Language file information
                1 https://www.ngdc.noaa.gov/thredds/ncss/regional/nikolski_13_mhhw_2014.nc/dataset.html Download a subset of the NetCDF Download a subset of the NetCDF download
                1 https://www.ngdc.noaa.gov/thredds/wcs/regional/nikolski_13_mhhw_2014.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/regional/nikolski_13_mhhw_2014.nc?service=WMS&version=1.3.0&request=GetCapabilities Web Map Service GetCapabilities Web Map Service GetCapabilities information
                1 lpdaac.usgs.gov METI/NASA ASTER Topographic DEM Digital database of World topography, in raster form (DEM) download
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                MD_Identifier or RS_Identifier

                Count Component Code
                1 Digital Elevation Model
                1 MHHW
                1 NTHMP DEM Gridding Project
                1 urn:ogc:def:crs:EPSG::4326
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                EX_Extent

                Bounding Box Temporal Extent
                Count Component Description West East North South Start End
                1 -168.98 -168.73 53.02 52.89 1937-01-01 2014-04-11
                2 -180 180 90 -90
                2 1910-01-01 1940-01-01
                2 1988-01-01 2005-01-01
                1
                1
                1
                1
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                EX_GeographicBoundingBox

                Count Component West East North South
                1 -168.98 -168.73 53.02 52.89
                2 -180 180 90 -90
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                EX_TemporalExtent

                Count Component Start End
                1 1937-01-01 2014-04-11
                2 1910-01-01 1940-01-01
                2 1988-01-01 2005-01-01
                4
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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 MHHW MHHW Mean Higher High Water height
                1 D_WGS_1984 urn:ogc:def:crs:EPSG::4326 World Geodetic System 1984
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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 2765
                1 column 1243
                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 Data Stewardship Maturity Report for Nikolski v2, Alaska 1/3 arc-second MHHW Coastal Digital Elevation Model crossReference
                1 Digital Elevation Model of Nikolski, Alaska: Procedures, Data Sources, and Analysis crossReference
                1 NTHMP DEM Project NTHMP DEM Project largerWorkCitation
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                LE_Source or LI_Source

                Count Component Title Date Description
                1 ASTER topography 2009-01-01 Source Contribution: topographic DEM ; Source Type: on web
                1 DTM survey data 2014-04-15 Source Contribution: Nikolski DTM Survey Data ; Source Type: online
                1 ETOPO1 1 Arc-Minute Global Relief Model 2008-01-01 Source Contribution: DEM downloaded from web site. ; Source Type: on web
                1 GPS Elevation points 2014-04-01 Source Contribution: GPS Survey data from UAF; Source Type: online
                1 NGDC Multibeam Bathymetry Database 2008-01-01 Source Contribution: downloaded from web site. ; Source Type: online
                1 NOS Hydrographic Surveys 2008-01-01 Source Contribution: hydrographic surveys ; Source Type: online
                1 Shuttle Radar Topography Mission (SRTM) 2008-01-01 Source Contribution: gridded topographic data downloaded from web site. ; Source Type: on web
                1 USGS NED topography 2008-01-01 Source Contribution: topographic DEM ; Source Type: on web
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                LE_ProcessStep or LI_ProcessStep

                Count Component DateTime Description
                1 2014-06-06T00:00:00 All datasets obtained by NGDC were converted to common horizontal and vertical datums of WGS84 geographic and Mean Higher High Water, respectively, using FME. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection.
                1 2014-06-14T00:00:00 Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
                1 2014-06-24T00:00:00 xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 1/3 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 2014-06-24T00:00:00 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.
                1 2014-07-10T00:00:00 The DEM was qualitatively 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. Comparisons to source data sets were also used to assess quality of gridding.
                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

                Count Component Code Type Status Description
                1 NTHMP DEM Gridding Project
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                MI_Platform

                Count Component Code Description
                1 Digital Elevation Model
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                MI_Instrument

                Count Component Code Type Description
                3 Light Detection and Ranging
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