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

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 NTHMP DEM Project 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 Image Service ArcGIS Image Service
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CI_Citation

Count Component Title Date Citation Identifier
1 Digital Elevation Model Footprints ArcGIS Map Service
  • 2011-02-15
1 Digital Elevation Models: Color Shaded Relief ArcGIS Image Service
  • 2011-10-19
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 NTHMP DEM Project
              • 2009-04-20
              1 Uncontrolled
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                CI_Series

                Count Component Name Issue Identification Page
                1 NTHMP DEMs Project metadata record
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                CI_ResponsibleParty

                Count Component Individual Organization Position Email Role Linkage
                1 Citation URL http://www.ngdc.noaa.gov/mgg/inundation/nthmp/nthmp.html
                2 GCMD Valids custodian http://gcmd.nasa.gov/learn/keyword_list.html
                1 Barry W. Eakins DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Barry.Eakins@noaa.gov distributor
                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
                1 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce publisher
                1 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/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (comp) 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
                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 NTHMP > National Tsunami Hazard Mitigation Program 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
                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.ngdc.noaa.gov/mgg/inundation/nthmp/nthmp.html National Tsunami Hazard Mitigation Program DEMs Home page information
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                MD_Identifier or RS_Identifier

                none found
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                EX_Extent

                Bounding Box Temporal Extent
                Count Component Description West East North South Start End
                1 -180.0 -116 62 32 2009-01-01
                2 -180 180 90 -90
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                EX_GeographicBoundingBox

                Count Component West East North South
                1 -180.0 -116 62 32
                2 -180 180 90 -90
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                EX_TemporalExtent

                Count Component Start End
                1 2009-01-01
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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

                none found
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                MD_GridSpatialRepresentation

                none found
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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

                none found
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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

                none found
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                LE_Source or LI_Source

                none found
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                LE_ProcessStep or LI_ProcessStep

                Count Component DateTime Description
                1 2008-10-31T00:00:00 Datasets are visually inspected with ArcGIS for identification and editing of data anomalies. Datasets are then compared with overlapping datasets to ensure data consistency.
                1 2008-10-31T00:00:00 xyz files of the bathymetric data are surfaced using GMT's 'surface' tool onto an 8 arc-second grid that is interpolated to fill empty cells. Points extracted every 10 meters along the coastline are also included to ensure that the bathymetric grid reaches zero at the coast. The resulting Arc ASCII grid is imported into ArcGIS and clipped to the coastline to remove values over land.
                1 2009-04-20T00:00:00 All datasets obtained by NGDC are converted to common horizontal and vertical datums based on the States' requirements using FME. They are also converted to common file format, ESRI point shapefiles, for visualization and inspection.
                1 2009-04-20T00:00:00 xyz files for each input dataset are 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 is given to more recent, higher-accuracy datasets. Gridding is typically performed in quadrants, each with a 5% data buffer. The grids are imported in ArcGIS and seamlessly merged to create the final DEM.
                1 2009-04-20T00:00:00 The DEMs are quantitatively evaluated by comparing with source datasets. They are 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 DEMs.
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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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