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Metadata Identifier: gov.noaa.ngdc.mgg.dem:525

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 Yakutat, Alaska 1 arc-second DEM The 1-second Yakutat Alaska Elevation Grid provides bathymetric data in ASCII raster format of 1-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling
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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
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CI_Citation

Count Component Title Date Citation Identifier
1 Digital Elevation Model Footprints ArcGIS Map Service
  • 2011-02-15
1 Electronic Nautical Charts
1 Mean High Water height
  • 2012-08-05
1 NASA/GCMD Data Center Keywords
    1 NASA/GCMD Data Resolution Keywords
      1 NASA/GCMD Location Keywords
        1 NASA/GCMD Platform Keywords
          1 NASA/Global Change Master Directory (GCMD) Earth Science Services Keywords NASA/GCMD Services Keywords
            1 None
              2 Uncontrolled
                1 World Geodetic System 1984
                • 2007-08-27
                1 Yakutat, Alaska 1 arc-second DEM
                • 2003-09-02
                1 global relief, hydrographic surveys, bathymetric maps
                1 high resolution vector shoreline, survey control points
                1 hypsographic and hydrographic vector data and dems
                1 water level station data, tidal datums
                • 2003-01-01
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                CI_Series

                Count Component Name Issue Identification Page
                1 Alaska Grids Southeast Alaska 2003
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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
                1 GCMD Valids custodian http://gcmd.nasa.gov/learn/keyword_list.html
                3 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, Department of Commerce publisher http://ngdc.noaa.gov/mgg/coastal/coastal.html
                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
                2 EPSG Registry European Petroleum Survey Group publisher http://www.epsg-registry.org/
                1 Varner, Jesse Jesse Varner DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Jesse.Varner@noaa.gov pointOfContact
                1 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 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 NOAA National Geophysical Data Center originator
                1 NOAA National Ocean Service, National Geodetic Survey publisher
                1 NOAA National Ocean Service, Office of Coast Survey publisher
                1 publisher - NOAA/NOS/Center for Operational Oceanographic Products and Services (CO-OPS) NOAA/NOS/Center for Operational Oceanographic Products and Services (CO-OPS) CO-OPS Tides and Currents http://tidesandcurrents.noaa.gov/email_form.shtml?contact=co-ops.userservices publisher http://tidesandcurrents.noaa.gov/index.shtml
                4 publisher - NOAA/PMEL/Center for Tsunami Research (NCTR) NOAA/PMEL/Center for Tsunami Research (NCTR) NOAA Center for Tsunami Research oar.pmel.time-support@noaa.gov publisher http://nctr.pmel.noaa.gov/index.html
                1 USGS National Mapping Division publisher
                1 USGS National Mapping Division originator
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                CI_OnlineResource

                Count Component Linkage Name Description Function
                1 http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso GCMD Feedback Form Have a Comment for the GCMD? information
                1 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
                1 http://gis.ngdc.noaa.gov/arcgis/rest/services/dem_hillshades/ImageServer DEM Color Shaded Relief Image Service An ArcGIS image service showing color shaded relief visualizations of land and seafloor digital elevation models (DEMs) available from NOAA's National Geophysical Data Center. 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/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
                4 http://nctr.pmel.noaa.gov/index.html NOAA Center for Tsunami Research NOAA/PMEL/Center for Tsunami Research (NCTR) information
                1 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://tidesandcurrents.noaa.gov/index.shtml Tides and Currents Center for Operational Oceanographic Products and Services (CO-OPS) 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 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
                1 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
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                MD_Identifier or RS_Identifier

                Count Component Code
                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 -139.93 -139.6 59.59 59.43 2003-07-01 2003-08-01
                1 -180 180 90 -90
                1 1979-01-01 2003-01-01
                1 1938-01-01 1999-01-01
                1 1974-01-01 1986-01-01
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                EX_GeographicBoundingBox

                Count Component West East North South
                1 -139.93 -139.6 59.59 59.43
                1 -180 180 90 -90
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                EX_TemporalExtent

                Count Component Start End
                1 2003-07-01 2003-08-01
                1 1979-01-01 2003-01-01
                1 1938-01-01 1999-01-01
                1 1974-01-01 1986-01-01
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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.
                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.
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                MD_ReferenceSystem

                Count Component Code Authority Title
                1 WGS84 urn:ogc:def:crs:EPSG::4326 World Geodetic System 1984
                1 Mean High Water height 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 552
                1 column 1200
                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

                none found
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                LE_Source or LI_Source

                Count Component Title Date Description
                1 Electronic Nautical Charts bathymetric elevation values and contours
                1 global relief, hydrographic surveys, bathymetric maps bathymetric elevation values and contours
                1 high resolution vector shoreline, survey control points vector shoreline and control points
                1 hypsographic and hydrographic vector data and dems shoreline vector contours, elevations, control points
                1 water level station data, tidal datums 2003-01-01 tidal and geodetic datum conversions
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                LE_ProcessStep or LI_ProcessStep

                Count Component DateTime Description
                1 2003-09-02T00:00:00 Each raw data source was converted into ESRI Arc-compatible formats. The resulting files were converted and adjusted to predetermined projection (geographic), horizontal datum (NAD27), and vertical datum (MHW) using the ArcInfo PROJECT command and ArcView Spatial Analyst MAP CALCULATOR algorithm. An ArcView polyline shapefile was created to represent the coastline. The coastline is based on USGS hydrographic vectors. The USGS coastline was compared to high-resolution NGS vector shoreline; no discernible difference was found between the two datasets. Bathymetric contours and data points were digitized from raster charts and images. Each dataset was analyzed for quality. Anomalies were removed; approximately 30 points were removed from NOS hydrographic survey datasets. Overlapping contours and points were assessed for matching. Bathymetric data was prioritized by quality and date. Recent surveys superseded older data. A TIN (Triangulated Irregular Network) was created using bathymetric data and coastline vectors using ArcView 3D Spatial Analyst. A 0.88-arcsecond grid was created. The grid was contoured at 1-, and 5-meter contours to compare with the original datasets. Problematics areas were redone by adding additional contours in areas of low point density. The bathymetric grid was clipped to requested coordinates. USGS 30-meter DEMs were merged into a single grid and analyzed for quality. The dataset was compare to hydrographic and hypsographic contours, as well as USGS, NGS, and COOPs control points. Problematics areas (airport, grid overlaps) were redone by creating TINs using source data. The topographic grid was clipped to requested coordinates. The topographic and bathymetric grids were merged into a single 0.88-arcsecond grid. The 0.88-second grid was compared to the Yakutat AK 2.66-second grid to ensure continuity and quality. A gridmatching graphic (yak3_1.jpg) was produced to verify nest matching for modeling efforts. The final grid was analyzed for blunders, systematic errors, and logical consistency.
                1 2008-11-04T00:00:00 Metadata imported.
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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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