Metadata Identifier: gov.noaa.ngdc.mgg.dem:11528

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 Atka, Alaska 8/15 arc-second Coastal Digital Elevation Model NOAA's National Centers for Environmental Information 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 Adak Island Alaska IFSAR DEM Data (legacy dataset)
    2000-10-21
1 Atka, Alaska 8/15 arc-second Coastal Digital Elevation Model
    2017-02-03
1 Bench Mark Data Sheet with Tidal Datum References
    2011-10-12
1 Digital Elevation Model Global Mosaic ArcGIS Image Service
    2016-06-14
1 Digital Elevation Models of Adak and Atka, Alaska: Procedures, Data Sources and Analysis
    2017-02-08
1 GCMD Data Center Keywords Global Change Master Directory (GCMD) Data Center Keywords
    2020-01-09
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 NCEI Digital Elevation Model Extents ArcGIS Feature Layer
              2022-10-24
            1 NOS Hydrographic Surveys
              2008-01-01
            1 NTHMP DEM Project
              2009-12-01
            1 North Pacific
              1 Shuttle Radar Topography Mission 1 Arc-Second Global: SRTM1N54W164V3
                2014-09-01
              1 UAF Adak, Alaska GPS
                2011-01-01
              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 Atka, Alaska 8/15 arc-second
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              CI_ResponsibleParty

              Count Component Individual Organization Position Email Role Linkage
              2 resourceProvider https://epsg.org/crs_4326/WGS-84.html
              7 Citation URL https://www.ncei.noaa.gov/maps/bathymetry/
              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
              2 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce originator
              1 DOC/NOAA/NOS National Ocean Service, NOAA, U.S. Department of Commerce originator
              2 EPSG Registry European Petroleum Survey Group publisher https://epsg.org/home.html
              1 Intermap Technologies Inc. originator
              2 Kelly Carignan Kelly Carignan NOAA National Centers for Environmental Information kelly.carignan@noaa.gov pointOfContact
              1 NASA > National Aeronautics and Space Administration originator
              4 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
              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 Anna Milan NOAA National Centers for Environmental Information Metadata Specialist editor
              1 National Tsunami Hazard Mitigation Program (NTHMP) collaborator
              1 University of Alaska at Fairbanks originator
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              CI_OnlineResource

              Count Component Linkage Name Description Function
              1 http://earthexplorer.usgs.gov/ Shuttle Radar Topography Mission The Shuttle Radar Topography Mission (SRTM) was a partnership between NASA and the National Geospatial-Intelligence Agency (NGA). Flown aboard the NASA Space Shuttle Endeavour (11-22 February 2000), SRTM fulfilled its mission to map the world in three dimensions. The USGS is under agreement with NGA and NASA's Jet Propulsion Laboratory to distribute SRTM elevation products derived from the C-band radar data. SRTM utilized interferometric C-band Spaceborne Imaging Radar to generate elevation data over 80 percent of the Earth's land surface. Global SRTM data at a resolution of 1 arc-second have been edited to delineate and flatten water bodies, better define coastlines, remove spikes and wells, and fill small voids. Larger areas of missing data or voids were filled by the NGA using interpolation algorithms in conjunction with other sources of elevation data. The SRTM 1 Arc-Second Global data offer worldwide coverage of void filled data at a resolution of 1 arc-second (30 meters) and provide open distribution of this high-resolution global data set. download
              1 http://ifsar.gina.alaska.edu/ Alaska IfSAR DEM Data hosted by GINA This data set is a digital elevation model (DEM) product that populates the GLOBAL Terrain product catalog. The DEM products are generated using the Intermap STAR-3i airborne interferometric synthetic aperture radar (SAR) system mounted in a LearJet 36A aircraft. download
              1 http://tidesandcurrents.noaa.gov/station_retrieve.shtml Tides and Currents Station Selection Bench Mark Data Sheet for station # 9461380 information
              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 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
              4 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/atka_815_mhhw_2017.pdf Digital Elevation Models of Adak and Atka, Alaska: Procedures, Data Sources and Analysis Report describing the development of the Adak and Atka, Alaska DEMs download
              1 https://www.ngdc.noaa.gov/thredds/dodsC/regional/atka_815_mhhw_2017.nc.html OPeNDAP Dataset Access Form OPeNDAP Dataset Access Form download
              1 https://www.ngdc.noaa.gov/thredds/fileServer/regional/atka_815_mhhw_2017.nc Download NetCDF File Download NetCDF File download
              1 https://www.ngdc.noaa.gov/thredds/ncml/regional/atka_815_mhhw_2017.nc?catalog=https%3A%2F%2Fwww.ngdc.noaa.gov%2Fthredds%2Fcatalog%2Fregional%2Fcatalog.html&dataset=regionalDatasetScan%2Fatka_815_mhhw_2017.nc NetCDF Markup Language file NetCDF Markup Language file information
              1 https://www.ngdc.noaa.gov/thredds/ncss/regional/atka_815_mhhw_2017.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/atka_815_mhhw_2017.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/atka_815_mhhw_2017.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 MHHW
              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 ISO valid extents for Atka 8/15 sec. DEM -174.26 -174.00 52.30 52.07
              2 -180 180 90 -90
              1 1933-01-01 1988-01-01
              1 1983-01-01 2001-12-31
              1
              1
              1
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              EX_GeographicBoundingBox

              Count Component West East North South
              1 -174.26 -174.00 52.30 52.07
              2 -180 180 90 -90
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              EX_TemporalExtent

              Count Component Start End
              1 1933-01-01 1988-01-01
              1 1983-01-01 2001-12-31
              3
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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 Mean Higher High Water height MHHW Mean Higher High Water height
              1 WGS84 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 1543
              1 column 1741
              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 Digital Elevation Models of Adak and Atka, 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 Adak Island Alaska IFSAR DEM Data (legacy dataset) 2000-10-21 Interferometric Synthetic Aperture Radar (IFSAR) DSM
              1 Bench Mark Data Sheet with Tidal Datum References 2011-10-12 Tidal information table from which vertical datum adjustment information are interpreted
              1 NOS Hydrographic Surveys 2008-01-01 NOS hydrographic survey data
              1 Shuttle Radar Topography Mission 1 Arc-Second Global: SRTM1N54W164V3 2014-09-01 Gridded topographic data
              1 UAF Adak, Alaska GPS 2011-01-01 GPS survey data obtained from UAF
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              LE_ProcessStep or LI_ProcessStep

              Count Component DateTime Description
              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.
              1 2017-01-10T00:00:00 All datasets obtained by NCEI were converted to common horizontal and vertical datums of WGS 84 geographic and Mean Higher High Water, respectively, based on tide station information. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection.
              1 2017-01-20T00:00:00 Datasets were visually inspected with ArcGIS and Global Mapper for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
              1 2017-01-25T00:00:00 xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 8/15 arc-second grid that interpolated to fill empty cells. Points extracted every 5 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 2017-01-28T00:00:00 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 2017-02-03T00:00:00 The DEM was quantitatively evaluated by comparing with source datasets.
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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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