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Metadata Identifier: gov.noaa.ngdc.mgg.dem:1521

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 Southern Louisiana 1/3 arc-second NAVD 88 DEM Modeling and mapping of coastal processes (e.g. tsunamis, hurricane storm-surge, and sea-level rise) requires digital representations of Earth's solid surface, referred to as digital elevation models (DEMs). Some modeling utilizes structured, square-cell DEMs, while others utilize unstructured grids that have no regular cell size or pattern. Usually, these different DEM types are developed independently, even though they are built from the same source bathymetric and topographic datasets. The National Geophysical Data Center (NGDC), an office of the National Oceanic and Atmospheric Administration (NOAA), has developed two bathymetric-topographic square-celled DEMs and one bathymetric-topographic unstructured DEM of southern Louisiana. The DEMs were developed for the Hurricane Forecast Improvement Project (HFIP), with the purpose of developing a new methodology for unstructured grid production from structured square-celled grids. The 1/3 arc-second DEM referenced to North American Vertical Datum of 1988 (NAVD 88) was carefully developed and evaluated. A NAVD 88 to mean high water (MHW) 1/3 arc-second conversion grid derived from VDatum project areas was created to model the relationship between NAVD 88 and MHW in the southern Louisiana region. NGDC combined the NAVD 88 DEM and the conversion grid to develop a 1/3 arc-second MHW DEM. The NAVD 88 DEM was generated from diverse digital datasets in the region. The DEMs were developed to be used for storm surge inundation and sea level rise modeling. The source bathymetric and topographic datasets used in the development of the NAVD 88 DEM were utilized along with the NAVD 88 DEM and derivative grids to develop the NAVD 88 unstructured DEM.
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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 Composite Shoreline and associated data of Louisiana State Composite, LA_COMP
  • 2001-01-01
1 Digital Elevation Model Footprints ArcGIS Map Service
  • 2011-02-15
1 Digital Elevation Models of Southern Louisiana: Procedures, Data Sources, and Analysis
  • 2010-12-01
1 Digital Elevation Models: Color Shaded Relief ArcGIS Map Service
  • 2011-10-19
1 Louisiana State topographic lidar
  • 1999-01-01
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 NOAA Coastal Services Center Coastal Bathymetric-Topographic Lidar
              • 2005-01-01
              1 NOAA Coastal Services Center Levee Topographic Lidar
              • 2005-01-01
              1 NOAA HFIP Gridding Project
              • 2008-10-31
              1 NOS Hydrographic Surveys
              • 2009-01-01
              1 North American Vertical Datum 1988
              • 2012-08-10
              1 Southern Louisiana 1/3 arc-second NAVD 88 DEM
              • 2012-01-28
              1 USACE Hydrographic Surveys
              • 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 NOAA Tsunami Inundation DEMs Southern Louisiana - NAVD88
                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
                12 Citation URL http://www.ngdc.noaa.gov/dem/squareCellGrid/download/1521
                2 GCMD Valids custodian http://gcmd.nasa.gov/learn/keyword_list.html
                1 "Atlas: The Louisiana Statewide GIS." LSU CADGIS Research Laboratory originator
                1 Barry W. Eakins originator
                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
                2 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
                2 DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, NOAA, U.S. Department of Commerce originator
                1 DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S Department of Commerce originator
                1 DOC/NOAA/NOS/OCS/CSDL > Coastal Survey Development Laboratory, OCS, NOS, 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
                2 EPSG Registry European Petroleum Survey Group publisher http://www.epsg-registry.org/
                1 Jason 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 Lisa A. Taylor originator
                1 Matthew R. Love originator
                1 Matt Love Matthew R. Love DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Matthew.Love@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 U.S. Army Corps of Engineers, New Orleans District originator
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                CI_OnlineResource

                Count Component Linkage Name Description Function
                1 http://atlas.lsu.edu/lidar/ Atlas: The Louisiana Statewide GIS. Lidar data distribution of 1999 Louisiana Lidar. download
                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.csc.noaa.gov/TCM/ 2005 USACE Post-Hurricane Katrina Topographic/Bathymetric Mapping CSC coastal bathymetric-topographic Lidar download
                2 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
                2 http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_hillshades_mosaic/MapServer DEM Color Shaded Relief Map Service A map 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/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
                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://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:datum:EPSG::5103 NAVD88 Link to Geographic Markup Language (GML) description of reference system. information
                1 http://www.mvn.usace.army.mil/ USACE New Orleans District Hydrographic Surveys Digital database of hydrographic surveys in New Orleans District download
                1 http://www.nauticalcharts.noaa.gov/csdl/welcome.htm CSDL non-superceded NOS Hydrographic Survey Database Digital database of non-superceded NOS hydrographic surveys that date back to the late 19th century. download
                2 http://www.ngdc.noaa.gov/dem/squareCellGrid/download/1521 Southern Louisiana 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/1521?gridFormat=netCDF Southern Louisiana 1/3 arc-second NAVD 88 DEM netCDF DEM Download NetCDF DEM, metadata and Readme file. download
                1 http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/1521 Digital Elevation Models of Southern Louisiana: Procedures, Data Sources and Analysis Report describing the development of the Southern Louisiana DEM 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/inundation/hurricane/hfip.html NOAA HFIP DEM Project Project web page. information
                1 http://www.ngdc.noaa.gov/mgg/inundation/tsunami/inundation.html NOAA Tsunami Inundation Gridding Project Project web page. information
                1 http://www.ngs.noaa.gov/RSD/shoredata/NGS_Shoreline_Products.htm Composite Shoreline and associated data of Louisiana State Composite, LA_COMP The shoreline and associated data are a representation based on an office interpretation of imagery at the time of photographs taken 19780101 to 19860301. download
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                MD_Identifier or RS_Identifier

                Count Component Code
                1 Digital Elevation Model
                1 NOAA HFIP DEM Project
                1 urn:ogc:def:crs:EPSG::4326
                1 urn:ogc:def:datum:EPSG::5103
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                EX_Extent

                Bounding Box Temporal Extent
                Count Component Description West East North South Start End
                1 -91.6 -89.8 29.7 28.6 1888-01-01
                2 -180 180 90 -90
                1 1897-01-01 2001-01-01
                1
                2
                1 1978-01-01 1986-01-01
                1
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                EX_GeographicBoundingBox

                Count Component West East North South
                1 -91.6 -89.8 29.7 28.6
                2 -180 180 90 -90
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                EX_TemporalExtent

                Count Component Start End
                1 1888-01-01
                1 1897-01-01 2001-01-01
                4
                1 1978-01-01 1986-01-01
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                MD_Format

                Count Component Name Version specification
                1 netCDF 3.6.2
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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 NAVD88 urn:ogc:def:datum:EPSG::5103 North American Vertical Datum 1988
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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 30241
                1 column 11881
                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 Southern Louisiana: Procedures, Data Sources, and Analysis crossReference
                1 NOAA HFIP Gridding Project largerWorkCitation
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                LE_Source or LI_Source

                Count Component Title Date Description
                1 Composite Shoreline and associated data of Louisiana State Composite, LA_COMP 2001-01-01 Source Contribution: composite shoreline downloaded from web site. ; Source Type: online
                1 Louisiana State topographic lidar 1999-01-01 Source Contribution: topographic lidar ; Source Type: online
                1 NOAA Coastal Services Center Coastal Bathymetric-Topographic Lidar 2005-01-01 Source Contribution: coastal lidar ; Source Type: online
                1 NOAA Coastal Services Center Levee Topographic Lidar 2005-01-01 Source Contribution: Louisiana levee lidar ; Source Type: online
                1 NOS Hydrographic Surveys 2009-01-01 Source Contribution: Hydrographic surveys provided to NGDC by CSDL ; Source Type: digital files via FTP
                1 USACE Hydrographic Surveys 2009-01-01 Source Contribution: Hydrographic surveys for New Orleans District ; Source Type: online
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                LE_ProcessStep or LI_ProcessStep

                Count Component DateTime Description
                1 2010-08-28T00:00:00 All datasets obtained by NGDC were converted to common horizontal and vertical datums of NAD 83 geographic and NAVD 88, respectively, using Proj4 and VDatum transformation tool. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection.
                1 2010-09-01T00:00:00 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 2010-09-24T00:00:00 Coastline datasets were merged and adjusted to fit satellite imagery.
                1 2010-09-30T00:00:00 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 netCDF grid was clipped to the coastline to remove values over land.
                1 2010-10-20T00:00:00 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.
                1 2010-10-24T00:00:00 The NAVD 88 DEM was quantitatively evaluated by comparing with source datasets and with elevation values extracted from NGS geodetic monuments. 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 NOAA HFIP DEM 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
                2 Light Detection and Ranging
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