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Metadata Identifier: gov.noaa.ngdc.mgg.dem:256

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 Cordova, Alaska Coastal Digital Elevation Model 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 (WGS 84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 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 Image Service ArcGIS Image Service
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CI_Citation

Count Component Title Date Citation Identifier
1 Cordova, Alaska Coastal Digital Elevation Model
  • 2010-02-19
1 Digital Elevation Model Footprints ArcGIS Map Service
  • 2011-02-15
1 Digital Elevation Models of Cordova, Alaska: Procedures, Data Sources, and Analysis
  • 2010-02-19
1 Digital Elevation Models: Color Shaded Relief ArcGIS Image Service
  • 2011-10-19
1 Electronic Navigational Charts
  • 2008-01-01
1 Mean 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 Bathymetry Database
              • 2008-01-01
              1 NOAA Tsunami Inundation Gridding Project
              • 2008-10-31
              1 NOS Hydrographic Surveys
              • 2008-01-01
              1 USACE Hydrographic Surveys
              • 2009-01-01
              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 Tsunami Inundation DEMs Cordova, Alaska
                1 NOAA Tsunami Inundation 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
                11 Citation URL http://www.ngdc.noaa.gov/dem/squareCellGrid/download/256
                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
                6 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
                4 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 DOC/NOAA/OAR/PMEL/NCTR > NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce originator
                1 DOI/USGS > U.S. Geological Survey, Department of the Interior originator
                1 Dorothy Z. Friday originator
                1 Elliot Lim originator
                2 EPSG Registry European Petroleum Survey Group publisher http://www.epsg-registry.org/
                1 Jason J. Caldwell originator
                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 Pamela R. Grothe originator
                1 U.S. Army Corps of Engineers 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://gis.ngdc.noaa.gov/arcgis/rest/services/dem_hillshades/ImageServer Digital Elevation Models: Color Shaded Relief ArcGIS Image Service REST endpoint for Digital Elevation Models: Color Shaded Relief ArcGIS image service search
                1 http://gis.ngdc.noaa.gov/arcgis/services/dem_hillshades/ImageServer/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
                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
                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://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 GeoPlatform Entry for Digital Elevation Model Footprints NOAA GeoPlatform listing for Digital Elevation Model Footprints ArcGIS Map Service information
                1 http://noaa.maps.arcgis.com/home/item.html?id=feb3c625dc094112bb5281c17679c769 NOAA GeoPlatform Entry for Digital Elevation Models: Color Shaded Relief NOAA GeoPlatform listing for Digital Elevation Models: Color Shaded Relief 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:datum:EPSG::5868 MHW height GML for Mean High Water height available at 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/256 Cordova, AK 1/3 arc-second Tsunami Inundation DEM Download page for accessing DEM, metadata record and development report. download
                1 http://www.ngdc.noaa.gov/dem/squareCellGrid/getArchive/256?gridFormat=ESRI+Arc+ASCII Cordova, Alaska Coastal Digital Elevation Model ASCII DEM Download DEM, metadata and readme file. download
                1 http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/256 Digital Elevation Models of Cordova, Alaska: Procedures, Data Sources and Analysis Report describing the development of the Cordova, 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 DEM Text Search http://www.ngdc.noaa.gov/dem/squareCellGrid/search DEM text search tool Text search tool for locating completed and planned 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 Bathymetry Database Multibeam swath sonar survey data download
                2 http://www.ngdc.noaa.gov/mgg/inundation/tsunami/inundation.html NOAA Tsunami Inundation Gridding Project Project web page. information
                1 http://www.poa.usace.army.mil/ USACE Alaska District Hydrographic Surveys Digital database of hydrographic surveys in Alaska District download
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                MD_Identifier or RS_Identifier

                Count Component Code
                1 Digital Elevation Model
                1 Digital Elevation Models
                1 Tsunami Inundation Gridding Project
                1 urn:ogc:def:crs:EPSG::4326
                1 urn:ogc:def:datum:EPSG::5868
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                EX_Extent

                Bounding Box Temporal Extent
                Count Component Description West East North South Start End
                1 -146.77 -145.21 60.82 60.49 1903-01-01 2010-01-01
                2 -180 180 90 -90
                1 1903-01-01 2008-01-01
                1
                1
                1
                1 2004-01-01 2004-01-01
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                EX_GeographicBoundingBox

                Count Component West East North South
                1 -146.77 -145.21 60.82 60.49
                2 -180 180 90 -90
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                EX_TemporalExtent

                Count Component Start End
                1 1903-01-01 2010-01-01
                1 1903-01-01 2008-01-01
                3
                1 2004-01-01 2004-01-01
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                MD_Format

                Count Component Name Version specification
                1 ESRI Arc ASCII 1 ASCII text version of ESRI ArcGIS raster format
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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 WGS84 urn:ogc:def:crs:EPSG::4326 World Geodetic System 1984
                1 MHW urn:ogc:def:datum:EPSG::5868 Mean High Water height
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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 3565
                1 column 16849
                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 Cordova, Alaska: Procedures, Data Sources, and Analysis crossReference
                1 NOAA Tsunami Inundation Gridding Project largerWorkCitation
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                LE_Source or LI_Source

                Count Component Title Date Description
                1 Electronic Navigational Charts 2008-01-01 Source Contribution: coastline and bathymetric sounding data ; Source Type: online
                1 NGDC Multibeam Bathymetry Database 2008-01-01 Source Contribution: Multibeam bathymetry data ; Source Type: online
                1 NOS Hydrographic Surveys 2008-01-01 Source Contribution: hydrographic surveys downloaded from web site. ; Source Type: online
                1 USACE Hydrographic Surveys 2009-01-01 Source Contribution: Hydrographic surveys for Cordova Harbor ; Source Type: online
                1 USGS NED topography 2008-01-01 Source Contribution: topographic DEM downloaded from web site. ; Source Type: online
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                LE_ProcessStep or LI_ProcessStep

                Count Component DateTime Description
                1 2009-11-30T00:00:00 All datasets obtained by NGDC were converted to common horizontal and vertical datums of NAD 83/WGS 84 geographic and Mean High Water, respectively, using FME or ArcGIS. They were also converted to common file format, ESRI point shapefiles or digital rasters, for visualization and inspection.
                1 2009-12-03T00:00:00 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 2009-12-15T00:00:00 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.
                1 2010-01-11T00:00:00 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 2010-01-20T00:00:00 The DEM was quantitatively 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 Tsunami Inundation Gridding Project
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                MI_Platform

                Count Component Code Description
                1 Digital Elevation Model
                1 Digital Elevation Models
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                MI_Instrument

                Count Component Code Type Description
                3 Light Detection and Ranging
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