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Metadata Identifier: gov.noaa.ngdc.mgg.dem:642

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 Midway Atoll 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

Unresolved Xlinks
Color Shaded Relief ArcGIS Map Service at: /gmi:MI_Metadata/gmd:identificationInfo[2]
Footprints ArcGIS Map Service at: /gmi:MI_Metadata/gmd:identificationInfo[3]
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CI_Citation

Count Component Title Date Citation Identifier
1 Digital Elevation Models of Midway Atoll: Procedures, Data Sources, and Analysis
    2009-06-30
1 Estimated Depths derived from IKONOS Satellite Imagery
    2006-01-01
1 Midway Atoll Coastal Digital Elevation Model
    2009-06-30
1 NASA/GCMD Earth Science Keywords
    1 NASA/GCMD Location Keywords
      1 NASA/GCMD Platform Keywords
        1 NGDC Marine Geophysical Trackline Database
          2008-01-01
        1 NGDC Multibeam Bathymetry Database
          2008-01-01
        1 NOAA Tsunami Inundation Gridding Project
          2008-10-31
        1 Shuttle Radar Topography Mission (SRTM)
          2008-01-01
        2 Uncontrolled
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          CI_Series

          Count Component Name Issue Identification Page
          1 NOAA Tsunami Inundation DEMs Midway Atoll 1/3 arc-second
          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
          10 Citation URL https://www.ngdc.noaa.gov/dem/squareCellGrid/download/642
          1 Barry W. Eakins originator
          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
          1 DOC/NOAA/OAR/PMEL/NCTR > NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce originator
          1 Elliot D. Lim originator
          1 Kelly S. Carignan originator
          1 Lisa A. Taylor originator
          1 NASA > National Aeronautics and Space Administration originator
          1 NPS > Naval Postgraduate School originator
          1 Pamela R. Medley originator
          1 Robin R. Warnken originator
          Unresolved Xlinks
          DEM Info at: /gmi:MI_Metadata/gmd:contact[1]
          NCEI (publisher) at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:citation[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[1]
          DEM Info at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:pointOfContact[1]
          DEM information at: /gmi:MI_Metadata/gmd:distributionInfo[1]/gmd:MD_Distribution[1]/gmd:distributor[1]/gmd:MD_Distributor[1]/gmd:distributorContact[1]
          Barry Eakins at: /gmi:MI_Metadata/gmd:dataQualityInfo[2]/gmd:DQ_DataQuality[1]/gmd:lineage[1]/gmd:LI_Lineage[1]/gmd:processStep[1]/gmi:LE_ProcessStep[1]/gmd:processor[1]
          Kelly Carignan at: /gmi:MI_Metadata/gmd:metadataMaintenance[1]/gmd:MD_MaintenanceInformation[1]/gmd:contact[1]
          Anna Milan at: /gmi:MI_Metadata/gmd:metadataMaintenance[1]/gmd:MD_MaintenanceInformation[1]/gmd:contact[2]
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          CI_OnlineResource

          Count Component Linkage Name Description Function
          1 http://www.nps.edu/ Depth Analysis of Midway Atoll Using Quickbird Multi-Spectral Imaging over Variable Substrates Master Thesis by Mark Camacho information
          1 https://lta.cr.usgs.gov/SRTM1Arc Shuttle Radar Topography Mission global topography download
          2 https://www.ngdc.noaa.gov/dem/squareCellGrid/download/642 Midway Atoll 1/3 arc-second Tsunami Inundation DEM Download page for accessing DEM, metadata record and development report. download
          1 https://www.ngdc.noaa.gov/dem/squareCellGrid/getArchive/642?gridFormat=ESRI+Arc+ASCII Midway Atoll Coastal Digital Elevation Model ASCII DEM Download DEM, metadata and readme file. download
          1 https://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/642 Digital Elevation Models of Midway Atoll: Procedures, Data Sources and Analysis Report describing the development of the Midway Atoll DEMs download
          1 https://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html NGDC Multibeam Bathymetry Database Multibeam swath sonar survey data download
          1 https://www.ngdc.noaa.gov/mgg/geodas/trackline.html NGDC Marine Geophysical Trackline Database Marine geophyscical trackline data download
          2 https://www.ngdc.noaa.gov/mgg/inundation/tsunami/inundation.html NOAA Tsunami Inundation Gridding Project Project web page. information
          Unresolved Xlinks
          DEM text search at: /gmi:MI_Metadata/gmd:distributionInfo[1]/gmd:MD_Distribution[1]/gmd:transferOptions[3]/gmd:MD_DigitalTransferOptions[1]/gmd:onLine[1]
          DEM map search at: /gmi:MI_Metadata/gmd:distributionInfo[1]/gmd:MD_Distribution[1]/gmd:transferOptions[4]/gmd:MD_DigitalTransferOptions[1]/gmd:onLine[1]
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          MD_Identifier or RS_Identifier

          Count Component Code
          1 Digital Elevation Models
          1 Tsunami Inundation Gridding Project
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          EX_Extent

          Bounding Box Temporal Extent
          Count Component Description West East North South Start End
          1 -177.57 -177.16 28.42 28.09 1961-01-01 2009-01-01
          1
          1 1992-01-01 2005-01-01
          1 1961-01-01 1991-01-01
          1 2004-01-01 2006-01-01
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          EX_GeographicBoundingBox

          Count Component West East North South
          1 -177.57 -177.16 28.42 28.09
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          EX_TemporalExtent

          Count Component Start End
          1 1961-01-01 2009-01-01
          1
          1 1992-01-01 2005-01-01
          1 1961-01-01 1991-01-01
          1 2004-01-01 2006-01-01
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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

          Unresolved Xlinks
          not for navigation at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:resourceConstraints[1]
          copyright statement at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:resourceConstraints[2]
          NOAA disclaimer at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:resourceConstraints[3]
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          MD_ReferenceSystem

          Unresolved Xlinks
          WGS84 at: /gmi:MI_Metadata/gmd:referenceSystemInfo[1]
          MHW at: /gmi:MI_Metadata/gmd:referenceSystemInfo[2]
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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 4429
          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 Midway Atoll: 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 Estimated Depths derived from IKONOS Satellite Imagery 2006-01-01 Source Contribution: Provided depths for the shallow water around Midway Atoll. ; Source Type: provided as xyz files from Richard Olsen
          1 NGDC Marine Geophysical Trackline Database 2008-01-01 Source Contribution: Trackline data for Midway Atoll. ; Source Type: downloaded from website
          1 NGDC Multibeam Bathymetry Database 2008-01-01 Source Contribution: Multibeam data for Midway Atoll. ; Source Type: online
          1 Shuttle Radar Topography Mission (SRTM) 2008-01-01 Source Contribution: Topography data for Midway Atoll. ; Source Type: online
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          LE_ProcessStep or LI_ProcessStep

          Count Component DateTime Description
          1 2009-03-17T00:00:00 All datasets obtained by NGDC were converted to common horizontal and vertical datums of WGS 84 geographic and Mean High Water, respectively, using FME. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection.
          Barry Eakins at Xpath: /gmi:MI_Metadata/gmd:dataQualityInfo[2]/gmd:DQ_DataQuality[1]/gmd:lineage[1]/gmd:LI_Lineage[1]/gmd:processStep[1]/gmi:LE_ProcessStep[1]/gmd:processor[1]
          1 2009-04-10T00:00:00 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 2009-04-30T00:00:00 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 Arc ASCII grid was imported into ArcGIS and clipped to the coastline to remove values over land.
          1 2009-05-07T00:00:00 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.
          1 2009-06-04T00:00:00 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.
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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 Models
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          MI_Instrument

          Count Component Code Type Description
          1 Multibeam Swath Bathymetry System
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