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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 DEM Global Mosaic ArcGIS Image Service Digital Elevation Model Global Mosaic ArcGIS Image Service ArcGIS Image 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 Model Global Mosaic ArcGIS Image Service
    2016-06-14
1 Digital Elevation Models of Chenega, Alaska: Procedures, Data Sources, and Analysis
    2010-11-30
1 Electronic Navigational Charts
    2009-01-01
1 Mean Higher High Water height
    2012-08-05
1 GCMD Data Center Keywords NASA/GCMD Data Center Keywords
    2015-03-01
    1995-04-24
1 NASA/GCMD Data Resolution Keywords
    1 NASA/GCMD Earth Science Keywords
      1 NASA/GCMD Location Keywords
        1 NASA/GCMD Platform Keywords
          1 GCMD Project Keywords NASA/GCMD Project Keywords
            2015-03-01
            1995-04-24
          2 NASA/Global Change Master Directory (GCMD) Earth Science Services Keywords NASA/GCMD Services Keywords
            2015-03-01
            1995-04-24
          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
            17 Citation URL http://www.ngdc.noaa.gov/dem/squareCellGrid/download/702
            1 Anna Milan Anna Milan DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Metadata Specialist Anna.Milan@noaa.gov pointOfContact
            1 Barry W. Eakins originator
            1 Barry Eakins Barry W. Eakins DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Research Scientist Barry.Eakins@noaa.gov pointOfContact
            7 DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce publisher http://ngdc.noaa.gov/mgg/coastal/coastal.html
            3 DEM Info DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DEM Information dem.info@noaa.gov pointOfContact
            1 NCEI (publisher) DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce publisher
            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
            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/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Jesse.Varner@noaa.gov pointOfContact
            1 Kelly Carignan Kelly Carignan DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce kelly.carignan@noaa.gov pointOfContact
            1 Kelly S. Carignan originator
            1 Lisa A. Taylor originator
            4 GCMD User Support Office NASA GCMD User Support Office gcmduso@gcmd.gsfc.nasa.gov publisher 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
            4 http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso GCMD Feedback Form Have a Comment for the GCMD? information
            4 http://gcmd.nasa.gov/learn/keyword_list.html GCMD's Science Keywords and Associated Directory Keywords 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_global_mosaic/ImageServer DEM Global Mosaic (Elevation Values) ArcGIS Image Service REST endpoint for DEM Global Mosaic (Elevation Values) ArcGIS Image Service search
            2 http://gis.ngdc.noaa.gov/arcgis/rest/services/dem_hillshades/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: http://gis.ngdc.noaa.gov/viewers/images/dem_color_scale.png. search
            1 http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_extents/MapServer Digital Elevation Model Footprints ArcGIS Dynamic Map Service REST endpoint for Digital Elevation Model Footprints ArcGIS dynamic map service search
            1 http://maps.ngdc.noaa.gov/arcgis/services/web_mercator/dem_extents/MapServer/WMSServer?request=GetCapabilities&service=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 NCEI Please see website for more information about Coastal DEMs. information
            1 http://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 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 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 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
            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
            1 https://www.ngdc.noaa.gov/thredds/catalog/regional/catalog.html?dataset=regionalDatasetScan/$fileName.nc NetCDF access and services on NCEI THREDDS Data Server 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
            2 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.
            1 NOAA disclaimer While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
            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.
            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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