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Metadata Identifier: gov.noaa.ngdc.mgg.dem:702

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 Chenega, Alaska 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 Footprints ArcGIS Map Service Digital Elevation Model Footprints ArcGIS Map Service ArcGIS Map Service
1 Color Shaded Relief ArcGIS Map Service Digital Elevation Models: Color Shaded Relief ArcGIS Map Service ArcGIS Map Service
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CI_Citation

Count Component Title Date Citation Identifier
1 Chenega, Alaska Coastal Digital Elevation Model
  • 2009-03-25
1 Digital Elevation Model Footprints ArcGIS Map Service
  • 2011-02-15
1 Digital Elevation Models of Chenega, Alaska: Procedures, Data Sources, and Analysis
  • 2010-11-30
1 Digital Elevation Models: Color Shaded Relief ArcGIS Map Service
  • 2011-10-19
1 Electronic Navigational Charts
  • 2009-01-01
1 Mean Higher High Water height
  • 2012-08-05
1 NASA/GCMD Data Center Keywords
    1 NASA/GCMD Data Resolution Keywords
      1 NASA/GCMD Earth Science Keywords
        1 NASA/GCMD Location Keywords
          1 NASA/GCMD Platform Keywords
            2 NASA/Global Change Master Directory (GCMD) Earth Science Services Keywords NASA/GCMD Services Keywords
              1 NGDC Multibeam Surveys
              • 2009-01-01
              1 NGDC Trackline Surveys
              • 2009-01-01
              1 NOS Hydrographic Surveys
              • 2009-01-01
              1 NTHMP DEM Project
              • 2009-12-01
              1 Satellite Pour lObservation de la Terre (SPOT)
              • 2002-01-01
              1 Shuttle Radar Topography Mission (SRTM)
              • 2009-01-01
              1 USACE Hydrographic Surveys
              • 2009-01-01
              1 USGS NED topography
              • 2009-01-01
              2 Uncontrolled
                1 World Geodetic System 1984
                • 2007-08-27
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                CI_Series

                Count Component Name Issue Identification Page
                1 NTHMP DEMs Chenega, Alaska
                1 NTHMP DEMs Named by primary coastal city, state in DEM.
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                CI_ResponsibleParty

                Count Component Individual Organization Position Email Role Linkage
                2 resourceProvider http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4326
                13 Citation URL http://www.ngdc.noaa.gov/dem/squareCellGrid/download/702
                2 GCMD Valids custodian http://gcmd.nasa.gov/learn/keyword_list.html
                1 Barry W. Eakins originator
                1 Barry Eakins Barry W. Eakins DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Research Scientist Barry.Eakins@noaa.gov pointOfContact
                8 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, Department of Commerce publisher http://ngdc.noaa.gov/mgg/coastal/coastal.html
                3 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce publisher
                5 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce originator
                2 DEM Info DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce DEM Information dem.info@noaa.gov pointOfContact
                1 DOC/NOAA/NOS/OCS > Office of Coast Survey, National Ocean Service, NOAA, U.S. Department of Commerce originator
                1 DOI/USGS > U.S. Geological Survey, Department of the Interior originator
                2 EPSG Registry European Petroleum Survey Group publisher http://www.epsg-registry.org/
                2 Varner, Jesse Jesse Varner DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Jesse.Varner@noaa.gov pointOfContact
                2 Kelly Carignan Kelly Carignan DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce kelly.carignan@noaa.gov pointOfContact
                1 Kelly S. Carignan originator
                1 Lisa A. Taylor originator
                2 GCMD User Support Office NASA GCMD User Support Office gcmduso@gcmd.gsfc.nasa.gov custodian http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
                1 NASA > National Aeronautics and Space Administration originator
                1 R. Jason Caldwell originator
                1 U.S. Army Corps of Engineers, Alaska District originator
                1 USFS > United States Forestry Service originator
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                CI_OnlineResource

                Count Component Linkage Name Description Function
                2 http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso GCMD Feedback Form Have a Comment for the GCMD? information
                2 GCMD Keyword Page http://gcmd.nasa.gov/learn/keyword_list.html GCMD Keywords Page This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions. information
                2 http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_extents/MapServer DEM Footprints ArcGIS Map Service A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available from NOAA's National Geophysical Data Center. search
                2 http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_hillshades_mosaic/MapServer Digital Elevation Models: Color Shaded Relief ArcGIS Cached Map Service REST endpoint for Digital Elevation Models: Color Shaded Relief ArcGIS cached map service search
                1 http://maps.ngdc.noaa.gov/soap/web_mercator/dem_extents/MapServer/WMSServer?request=GetCapabilities%26service=WMS Digital Elevation Model Footprints Web Map Service (WMS) Capabilities document for Open Geospatial Consortium Web Map Service for Digital Elevation Model Footprints search
                1 http://maps.ngdc.noaa.gov/soap/web_mercator/dem_hillshades_mosaic/MapServer/WMSServer?request=GetCapabilities%26service=WMS Digital Elevation Models: Color Shaded Relief Web Map Service (WMS) Capabilities document for Open Geospatial Consortium Web Map Service for Digital Elevation Models: Color Shaded Relief search
                1 http://ned.usgs.gov/ USGS National Elevation Dataset Digital database of U.S. topography, in raster form (DEM) download
                2 http://ngdc.noaa.gov/mgg/coastal/coastal.html Integrated Models of Coastal Relief at NGDC Please see NGDC's website for more information about Coastal DEMs at NGDC. information
                1 http://noaa.maps.arcgis.com/home/item.html?id=d41f39c8a6684c54b62c8f1ab731d5ad NOAA ArcGIS Online Entry NOAA ArcGIS Online listing for Digital Elevation Model Footprints ArcGIS Map Service information
                1 http://noaa.maps.arcgis.com/home/item.html?id=feb3c625dc094112bb5281c17679c769 NOAA ArcGIS Online Entry NOAA ArcGIS Online listing for Digital Elevation Models: Color Shaded Relief ArcGIS Map Service information
                1 http://srtm.usgs.gov/ Shuttle Radar Topography Mission global topography download
                1 http://www.alaskamapped.org/ Satellite Pour lObservation de la Terre regional topography of Chugach National Forest download
                1 http://www.arcgis.com/home/item.html?id=7f11b445da1a45ccb76b403018302d25 ArcGIS Online Entry ArcGIS Online listing for Digital Elevation Models: Color Shaded Relief ArcGIS Map Service. information
                1 http://www.arcgis.com/home/item.html?id=fc9f6935b39949e4acda2070de720e88 ArcGIS Online Entry ArcGIS Online listing for Digital Elevation Model Footprints ArcGIS Map Service. information
                2 http://www.epsg-registry.org/ 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 http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4326 WGS 84 GML of World Geodetic System 1984 coordinate reference system. information
                1 http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::5869 MHHW height GML for mean higher high water vertical coordinate reference system (in meters) available from the epsg-registry. information
                1 http://www.nauticalcharts.noaa.gov/mcd/enc/index.htm OCS Electronic Navigational Charts Digital database of NOAA nautical chart information. download
                2 http://www.ngdc.noaa.gov/dem/squareCellGrid/download/702 Chenega, AK 8/15 arc-second MHHW DEM Download page for accessing DEM, metadata record, and development report. download
                1 http://www.ngdc.noaa.gov/dem/squareCellGrid/getArchive/702?gridFormat=netCDF Chenega, Alaska Coastal Digital Elevation Model netCDF DEM Download NetCDF DEM, metadata and Readme file. download
                1 http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/702 Digital Elevation Models of Chenega, Alaska: Procedures, Data Sources and Analysis Report describing the development of the Chenega, Alaska DEMs download
                2 DEM Map Search http://www.ngdc.noaa.gov/dem/squareCellGrid/map Map Interface Graphic geo-spatial search tool for locating completed and planned DEMs. search
                2 http://www.ngdc.noaa.gov/dem/squareCellGrid/search DEM text search tool Text search tool for locating completed and planned NTHMP tsunami inundation DEMs. search
                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 Survey Database Digital database of NGDC multibeam surveys. download
                1 http://www.ngdc.noaa.gov/mgg/geodas/trackline.html NGDC Trackline Survey Database Digital database of NGDC Trackline surveys. download
                1 http://www.ngdc.noaa.gov/mgg/inundation/nthmp/nthmp.html NTHMP DEM Project Project web page. information
                1 http://www.poa.usace.army.mil/ USACE Alaska District Hydrographic Surveys Digital database of hydrographic surveys in Alaska 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 -148.17 -147.89 60.19 59.97 1902-01-01 2008-01-01
                2 -180 180 90 -90
                1 1902-01-01 2006-01-01
                2
                1
                1 1996-01-01 2004-01-01
                1 1970-01-01 1999-01-01
                1
                1
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                EX_GeographicBoundingBox

                Count Component West East North South
                1 -148.17 -147.89 60.19 59.97
                2 -180 180 90 -90
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                EX_TemporalExtent

                Count Component Start End
                1 1902-01-01 2008-01-01
                1 1902-01-01 2006-01-01
                5
                1 1996-01-01 2004-01-01
                1 1970-01-01 1999-01-01
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                MD_Format

                Count Component Name Version specification
                1 netCDF 1 netCDF
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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 Geophysical Data Center. Not subject to copyright protection within the United States.
                2 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.
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                MD_ReferenceSystem

                Count Component Code Authority Title
                1 MHHW 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 1485
                1 column 1890
                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 Chenega, Alaska: Procedures, Data Sources, and Analysis crossReference
                1 NTHMP DEM Project largerWorkCitation
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                LE_Source or LI_Source

                Count Component Title Date Description
                1 Electronic Navigational Charts 2009-01-01 Source Contribution: downloaded from web site. ; Source Type: online
                1 NGDC Multibeam Surveys 2009-01-01 Source Contribution: multibeam surveys downloaded from web site. ; Source Type: online
                1 NGDC Trackline Surveys 2009-01-01 Source Contribution: Trackline surveys downloaded from web site. ; Source Type: online
                1 NOS Hydrographic Surveys 2009-01-01 Source Contribution: hydrographic surveys downloaded from web site. ; Source Type: online
                1 Satellite Pour lObservation de la Terre (SPOT) 2002-01-01 Source Contribution: gridded topographic data downloaded from web site. ; Source Type: on web
                1 Shuttle Radar Topography Mission (SRTM) 2009-01-01 Source Contribution: gridded topographic data downloaded from web site. ; Source Type: on web
                1 USACE Hydrographic Surveys 2009-01-01 Source Contribution: Hydrographic surveys downloaded from web site. ; Source Type: online
                1 USGS NED topography 2009-01-01 Source Contribution: gridded topographic data ; Source Type: online
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                LE_ProcessStep or LI_ProcessStep

                Count Component DateTime Description
                1 2010-10-08T00:00:00 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 2010-10-22T00:00:00 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 2010-11-05T00:00:00 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 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 2010-11-19T00:00:00 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 with a 5% data buffer. The grid was imported in ArcGIS to create the final DEM.
                1 2010-11-26T00:00:00 The DEM was quantitatively evaluated by comparing with source datasets. 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.
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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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