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Global Digital Elevation Models (DEM) - ETOPO1 Global Relief Model

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    dateStamp:  2013-05-31
    metadataStandardName:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
    metadataStandardVersion:  ISO 19115-2:2009(E)
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        citation:  (CI_Citation)
            title:  Global Digital Elevation Models (DEM) - ETOPO1 Global Relief Model
            date:  (CI_Date)
                date:  2009-01-01
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            edition:  First
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                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
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                        city:  Boulder
                        administrativeArea:  Colorado
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                        linkage: http://www.ngdc.noaa.gov/mgg/global/global.html
                        name:  ETOPO1 Global Relief Model
                        description:  web access to ETOPO1 Global Relief Model
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        abstract:  In August 2008, the National Geophysical Data Center (NGDC), an office of the National Oceanic and Atmospheric Administration (NOAA), developed the ETOPO1 Global Relief Model as an improvement to the ETOPO2v2 Global Relief Model. ETOPO1 is available in "Ice Surface" (top of Antarctic and Greenland ice sheets) and "Bedrock" (base of the ice sheets) versions. Both versions of ETOPO1 were generated from diverse global and regional digital data sets, which were shifted to common horizontal and vertical datums, and then evaluated and edited as needed. Bathymetric, topographic, and shoreline data used in ETOPO1 were obtained from NGDC, Antarctic Digital Database (ADD), European Ice Sheet Modeling Initiative (EISMINT), Scientific Committee on Antarctic Research (SCAR), Japan Oceanographic Data Center (JODC), Caspian Environment Programme (CEP), Mediterranean Science Commission (CIESM), National Aeronautics and Space Administration (NASA), National Snow and Ice Data Center (NSIDC), Scripps Institute of Oceanography (SIO), and Leibniz Institute for Baltic Sea Research (LIBSR). ETOPO1 is vertically referenced to sea level, and horizontally referenced to the World Geodetic System of 1984 (WGS 84). Cell size for ETOPO1 is 1 arc-minute.
        purpose:  Developed to support global research, exploration, and education
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            individualName:  Barry W. Eakins
            organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
            positionName:  Research Scientist
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                    facsimile:  303-497-6513
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                    deliveryPoint:  325 Broadway, E/GC3
                    city:  Boulder
                    administrativeArea:  Colorado
                    postalCode:  80305-3328
                    country:  USA
                    electronicMailAddress:  Barry.Eakins@noaa.gov
                hoursOfService:  9am-5pm, M-F, Mountain Time
                contactInstructions:  Contact NGDC's Marine Geology and Geophysics Division. http://www.ngdc.noaa.gov/mgg/aboutmgg/contacts.html
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            keyword:  Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
            keyword:  Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
            keyword:  Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
            keyword:  Earth Science > Land Surface > Topography > Terrain Elevation
            keyword:  Earth Science > Land Surface > Topography > Topographical Relief
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            keyword:  INFOTERRA > Subject disciplines > Geophysics > Geophysics
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            useLimitation:  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.
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            useLimitation:  Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
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            useLimitation:  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.
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                title:  ETOPO1 Global Relief Model
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                    date:  2009-01-01
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                    organisationName:  Barry W. Eakins
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                            linkage: http://www.ngdc.noaa.gov/mgg/global/relief/ETOPO1/docs/ETOPO1.pdf
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        language:  eng; USA
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        topicCategory:  (MD_TopicCategoryCode) elevation
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            title:  Digital Elevation Model Footprints ArcGIS Map Service
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                date:  2011-02-15
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        abstract:  A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available from NOAA's National Geophysical Data Center. NOAA's National Geophysical Data Center (NGDC) builds and distributes high-resolution, coastal digital elevation models (DEMs) that integrate ocean bathymetry and land topography to support NOAA's mission to understand and predict changes in Earth's environment, and conserve and manage coastal and marine resources to meet our Nation's economic, social, and environmental needs. They can be used for modeling of coastal processes (tsunami inundation, storm surge, sea-level rise, contaminant dispersal, etc.), ecosystems management and habitat research, coastal and marine spatial planning, and hazard mitigation and community preparedness. Layers available in the map service: Layers 1-4: DEMs by Category (includes various DEMs, both hosted at NGDC, and elsewhere on the web); Layers 6-11: NGDC DEM Projects (DEMs hosted at NGDC, color-coded by project); Layer 12: All NGDC Bathymetry DEMs (All bathymetry or bathy-topo DEMs hosted at NGDC).
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            useLimitation:  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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        citation:  (CI_Citation)
            title:  Digital Elevation Models: Color Shaded Relief ArcGIS Map Service
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                date:  2011-10-19
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                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, Department of Commerce
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://noaa.maps.arcgis.com/home/item.html?id=feb3c625dc094112bb5281c17679c769
                        name:  NOAA ArcGIS Online Entry
                        description:  NOAA ArcGIS Online listing for Digital Elevation Models: Color Shaded Relief ArcGIS Map Service
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, Department of Commerce
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_extents/MapServer
                        name:  DEM Footprints ArcGIS Map Service
                        description:  A map service showing the location and coverage of land and seafloor digital elevation models (DEMs) available from NOAA's National Geophysical Data Center.
                        function:  (CI_OnLineFunctionCode) search
                role:  (CI_RoleCode) publisher
        abstract:  This is a tiled map service showing color shaded relief visualizations of high-resolution digital elevation models (DEMs) of U.S. coastal regions. NOAA's National Geophysical Data Center (NGDC) builds and distributes high-resolution coastal digital elevation models (DEMs) that integrate ocean bathymetry and land topography to support NOAA's mission to understand and predict changes in Earth's environment, and conserve and manage coastal and marine resources to meet our Nation's economic, social, and environmental needs. They can be used for modeling of coastal processes (tsunami inundation, storm surge, sea-level rise, contaminant dispersal, etc.), ecosystems management and habitat research, coastal and marine spatial planning, and hazard mitigation and community preparedness. DEMs included in this visualization: High-resolution DEMs of select U.S. coastal communities and surrounding areas. Most are at a resolution of 1/3 to 1 arc-second (approx 10-30 m); U.S. Coastal Relief Model: A 3 arc-second (approx 90 m) comprehensive view of the conterminous U.S. coastal zone, Puerto Rico, and Hawaii; Southern Alaska Coastal Relief Model: A 24 arc-second (approx. 500 m) model of Southern Alaska, spanning the Bering Sea, Aleutian Islands, and Gulf of Alaska. This map service can be used as a basemap. It has a transparent background, so it can also be shown as a layer on top of a different basemap. Please see NGDC's corresponding DEM Footprints map service for polygon footprints and more information about the individual DEMs used to create this composite view.
        pointOfContact:  (CI_ResponsibleParty)
            individualName:  Jesse Varner
            organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
            contactInfo:  (CI_Contact)
                address:  (CI_Address)
                    electronicMailAddress:  Jesse.Varner@noaa.gov
            role:  (CI_RoleCode) pointOfContact
        descriptiveKeywords:  (MD_Keywords)
            keyword:  DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
            keyword:  DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
            keyword:  DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  NASA/GCMD Services Keywords
                date:
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA
                    positionName:  GCMD User Support Office
                    contactInfo:  (CI_Contact)
                        address:  (CI_Address)
                            electronicMailAddress:  gcmduso@gcmd.gsfc.nasa.gov
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
                            name:  GCMD Feedback Form
                            description:  Have a Comment for the GCMD?
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://gcmd.nasa.gov/learn/keyword_list.html
                            name:  GCMD Keywords Page
                            description:  This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
        resourceConstraints:  (MD_Constraints)
            useLimitation:  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.
        serviceType:
          LocalName:  ArcGIS Map Service
        serviceTypeVersion:  10
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                extentTypeCode:  1
                westBoundLongitude:  -180
                eastBoundLongitude:  180
                southBoundLatitude:  -90
                northBoundLatitude:  90
        couplingType:  (SV_CouplingType) tight
        containsOperations:  (SV_OperationMetadata)
            operationName:  ArcGIS Server REST endpoint for cached map service
            DCP:
            connectPoint:  (CI_OnlineResource)
                linkage: http://maps.ngdc.noaa.gov/arcgis/rest/services/web_mercator/dem_hillshades_mosaic/MapServer
                protocol:  http
                applicationProfile:  ArcGIS Map Service
                name:  Digital Elevation Models: Color Shaded Relief ArcGIS Cached Map Service
                description:  REST endpoint for Digital Elevation Models: Color Shaded Relief ArcGIS cached map service
                function:  (CI_OnLineFunctionCode) search
        containsOperations:  (SV_OperationMetadata)
            operationName:  WMS Get Capabilities
            DCP:
            connectPoint:  (CI_OnlineResource)
                linkage: http://maps.ngdc.noaa.gov/soap/web_mercator/dem_hillshades_mosaic/MapServer/WMSServer?request=GetCapabilities%26service=WMS
                protocol:  http
                applicationProfile:  Open Geospatial Consortium Web Map Service (WMS)
                name:  Digital Elevation Models: Color Shaded Relief Web Map Service (WMS)
                description:  Capabilities document for Open Geospatial Consortium Web Map Service for Digital Elevation Models: Color Shaded Relief
                function:  (CI_OnLineFunctionCode) search
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    distributionInfo:  (MD_Distribution)
        distributionFormat:  (MD_Format)
            name:  netCDF, GRD98, binary, xyz, georeferenced tiff, ASCII xyz, ASCII raster, GRD98 binary raster, pdf, png, jpeg, kmz
            version:
            fileDecompressionTechnique:  generally GZIP
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  DEM Information
                contactInfo:  (CI_Contact)
                    address:  (CI_Address)
                        electronicMailAddress:  dem.info@noaa.gov
                role:  (CI_RoleCode) pointOfContact
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: http://www.ngdc.noaa.gov/mgg/global/global.html
                name:  ETOPO1 Global Relief Model netCDF DEM
                description:  Download NetCDF DEM, metadata and Readme file.
                function:  (CI_OnLineFunctionCode) download
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: http://www.ngdc.noaa.gov/mgg/global/global.html
                name:  Global Digital Elevation Models (DEM) - ETOPO1 Global Relief Model Homepage
                description:  Information, preview and access DEM, metadata record and development report.
                function:  (CI_OnLineFunctionCode) information
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Horizontal Positional Accuracy Report
            evaluationMethodDescription:  The horizontal accuracy of bathymetric and topographic features in the Ice surface global relief model is dependent upon the accuracy of the input datasets used to determine corresponding cell values. A qualitative assesment of horizontal accuracy was performed, but a quantitative assesment has not yet been performed. Topography: Positional accuracy of input topographic datasets limits accuracy of corresponding cell values in global relief model. Global relief model topographic cell-value relative-contribution factors: NASA SRTM30: 1, NGDC GLOBE: 1, NISDC Antarctica RAMP: 100, NGDC IBCAO: 10, NGDC Great Lakes: 10. Bathymetry: Positional accuracy of input bathymetric datasets limits accuracy of corresponding cell values in global relief model. Global relief model bathymetric cell-value relative-contribution factors: JODC bathymetry: 10, NGDC Gulf of California Bathymetry: 10, CEP Caspian Sea Bathymetry: 10, CIESM Mediterranean Sea Bathymetry: 10, SIO Measured and Estimated Seafloor Topography: 1, LIBSR Baltic Sea Bathymetry: 10, NGDC IBCAO: 10, NGDC U.S Coastal Relief Model: 10, NGDC Great Lakes Bathymetry: 10. The horizontal accuracy of bathymetric and topographic features in the Bedrock surface global relief model is dependent upon the accuracy of the input datasets used to determine corresponding cell values. A qualitative assessment of horizontal accuracy was performed, but a quantitative assessment has not yet been performed. Topography: Positional accuracy of input topographic datasets limits accuracy of corresponding cell values in global relief model. Global relief model topographic cell-value relative-contribution factors: NASA SRTM30: 1, NGDC GLOBE: 1, NISDC Greenland Bedrock: 100, EISMINT/SCAR Antarctic BEDMAP: 100, NGDC Great Lakes: 10. Bathymetry: Positional accuracy of input bathymetric datasets limits accuracy of corresponding cell values in global relief model. Global relief model bathymetric cell-value relative-contribution factors: JODC bathymetry: 10, NGDC Gulf of California Bathymetry: 10, CEP Caspian Sea Bathymetry: 10, CIESM Mediterranean Sea Bathymetry: 10, SIO Measured and Estimated Seafloor Topography: 1, LIBSR Baltic Sea Bathymetry: 10, NGDC IBCAO: 10, NGDC U.S Coastal Relief Model: 10, NGDC Great Lakes Bathymetry: 10.
            result:
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Vertical Positional Accuracy Report
            evaluationMethodDescription:  The vertical accuracy of bathymetric and topographic features in the Ice surface global relief model is dependent upon the accuracy of the input datasets used to determine corresponding cell values. A qualitative assesment of vertical accuracy was performed, but a quantitative assesment has not yet been performed. Vertical accuracy of input topographic datasets limits accuracy of corresponding cell values in global relief model. Global relief model topographic cell-value relative-contribution factors: NASA SRTM30: 1, NGDC GLOBE: 1, NISDC Antarctica RAMP: 100, NGDC IBCAO: 10, NGDC Great Lakes: 10. Bathymetry: Vertical accuracy of input bathymetric datasets limits accuracy of corresponding cell values in global relief model. Global relief model bathymetric cell-value relative-contribution factors: JODC bathymetry: 10, NGDC Gulf of California Bathymetry: 10, CEP Caspian Sea Bathymetry: 10, CIESM Mediterranean Sea Bathymetry: 10, SIO Measured and Estimated Seafloor Topography: 1, LIBSR Baltic Sea Bathymetry: 10, NGDC IBCAO: 10, NGDC U.S Coastal Relief Model: 10, NGDC Great Lakes Bathymetry: 10. The vertical accuracy of bathymetric and topographic features in the Bedrock surface global relief model is dependent upon the accuracy of the input datasets used to determine corresponding cell values. A qualitative assessment of vertical accuracy was performed, but a quantitative assessment has not yet been performed. Vertical accuracy of input topographic datasets limits accuracy of corresponding cell values in global relief model. Global relief model topographic cell-value relative-contribution factors: NASA SRTM30: 1, NGDC GLOBE: 1, NISDC Greenland Bedrock: 100, EISMINT/SCAR Antarctic BEDMAP: 100, NGDC Great Lakes: 10. Bathymetry: Vertical accuracy of input bathymetric datasets limits accuracy of corresponding cell values in global relief model. Global relief model bathymetric cell-value relative-contribution factors: JODC bathymetry: 10, NGDC Gulf of California Bathymetry: 10, CEP Caspian Sea Bathymetry: 10, CIESM Mediterranean Sea Bathymetry: 10, SIO Measured and Estimated Seafloor Topography: 1, LIBSR Baltic Sea Bathymetry: 10, NGDC IBCAO: 10, NGDC U.S Coastal Relief Model: 10, NGDC Great Lakes Bathymetry: 10.
            result:
        report:  (DQ_CompletenessCommission)
            evaluationMethodDescription:  NGDC made every effort to obtain all available digital topographic and bathymetric datasets for use in building the global relief model.
            result:
        report:  (DQ_ConceptualConsistency)
            measureDescription:  Datasets were visually compared internally and externally (with other overlapping datasets and satellite images and maps) in ESRI ArcGIS for identification of anomalous elevations or data inconsistencies. Where elevation inconsistencies occurred, the most recent and/or highest resolution data set was selected for use in that region. Elevations in the older and/or lower-resolution datasets were deleted prior to building the global relief model.
            result:
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  All datasets obtained by NGDC were converted to common horizontal and vertical datums of WGS 84 and sea level, respectively, using FME. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection.
                dateTime:
                  DateTime:  2008-06-17T00:00:00
                processor:  (CI_ResponsibleParty)
                    individualName:  Barry W. Eakins
                    organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
                    positionName:  Research Scientist
                    contactInfo:  (CI_Contact)
                        phone:  (CI_Telephone)
                            voice:  303-497-6505
                            facsimile:  303-497-6513
                        address:  (CI_Address)
                            deliveryPoint:  NOAA/NESDIS/NGDC
                            deliveryPoint:  325 Broadway, E/GC3
                            city:  Boulder
                            administrativeArea:  Colorado
                            postalCode:  80305-3328
                            country:  USA
                            electronicMailAddress:  Barry.Eakins@noaa.gov
                        hoursOfService:  9am-5pm, M-F, Mountain Time
                        contactInstructions:  Contact NGDC's Marine Geology and Geophysics Division. http://www.ngdc.noaa.gov/mgg/aboutmgg/contacts.html
                    role:  (CI_RoleCode) pointOfContact
            processStep:  (LE_ProcessStep)
                description:  Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
                dateTime:
                  DateTime:  2008-06-25T00:00:00
            processStep:  (LE_ProcessStep)
                description:  Coastline datasets were adjusted to fit satellite imagery.
                dateTime:
                  DateTime:  2008-06-30T00:00:00
            processStep:  (LE_ProcessStep)
                description:  xyz files of the Measured and Estimated Seafloor Topography data (between -500 m and 0 m) were surfaced using GMT's 'surface' tool onto a 1 arc-minute cell size grid that interpolated to fill empty cells. Points extracted along the GSHHS coastline were also included, at -1 m elevation, to force bathymetric interpolation into the coastal zone. The resulting Arc ASCII grid was clipped to the coastline and the -120 m contour to remove values over land and non-coastal waters.
                dateTime:
                  DateTime:  2008-07-10T00:00:00
            processStep:  (LE_ProcessStep)
                description:  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 the NSIDC Antarctica RAMP topography dataset. Least weight was given to the global datasets and the interpolated bathymetric surface. Gridding was performed in 16 regional tiles, each with a 5% data buffer. The grids were imported in ArcGIS and seamlessly merged to create the final global relief model.
                dateTime:
                  DateTime:  2008-07-18T00:00:00
            processStep:  (LE_ProcessStep)
                description:  ETOPO1 was bult as a global, grid-registered, 1 arc-minute grid that spans from pole to pole and from -180 degrees to 180 degrees in longitude. It is 21601 cells by 10801 cells in dimension, with multiple duplicate cells sitting atop the North and South poles and on the -180 degrees and 180 degrees longitude line. A cell-registered version (21600 by 10800 cells) was created from the grid-registered version by resampling, using GMT's 'grdsample' tool. This resampling introduces some flattening of relief, due to averaging of four grid-registered cell vlaues to produce one cell-registered value. Both types are global, though the grid-registered version should be considered the authoritative version. The cell-registered version may be more appropriate for creating maps and images.
                dateTime:
                  DateTime:  2008-07-31T00:00:00
            source:  (LI_Source)
                description:  Source Contribution: global shoreline data downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  NGDC Global Self-consistent, Hierarchical, High-resolution Shoreline Database (GSHHS)
                    date:  (CI_Date)
                        date:  2003-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NEDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.ngdc.noaa.gov/mgg/shorelines/gshhs.html
                                name:  GSHHS - A Global Self-consistent, Hierarchical, High-resolution Shoreline Database
                                description:  global shoreline data
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1996-01-01
                            endPosition:  2003-01-01
            source:  (LI_Source)
                description:  Source Contribution: Antarctica coastline data downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  ADD Antarctica Coastline
                    date:  (CI_Date)
                        date:  2006-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Antarctica Digital Database (ADD)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.add.scar.org/
                                name:  Antarctica Coastline
                                description:  Antarctica coastline data
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1993-01-01
                            endPosition:  2006-01-01
            source:  (LI_Source)
                description:  Source Contribution: Multibeam bathymetry data downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  NGDC Gulf of California Bathymetry
                    date:  (CI_Date)
                        date:  2006-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NEDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html
                                name:  NGDC Multibeam Bathymetry Database
                                description:  Multibeam swath sonar survey data
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  2006-01-01
            source:  (LI_Source)
                description:  Source Contribution: 500 meter gridded bathymetry data set ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  JODC Bathymetry
                    date:  (CI_Date)
                        date:  1999-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Japan Oceanographic Data Center (JODC)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.jodc.go.jp/data_set/jodc/jegg_intro.html
                                name:  J-EGG500(JODC-Expert Grid data for Geographic -500m)
                                description:  500 meter gridded bathymetry data set
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  1999-01-01
            source:  (LI_Source)
                description:  Source Contribution: Caspian Sea bathymetric isolines downloaded from web site. ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  CEP Isolines of the Bathymetry of the Caspian Sea
                    date:  (CI_Date)
                        date:  1999-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Caspian Environment Programme (CEP)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://caspian.iwlearn.org/
                                name:  Isolines of the Bathymetry of the Caspian Sea
                                description:  Isolines of the bathymetry is used for showing the depths of the Caspian Sea
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1987-01-01
                            endPosition:  1999-01-01
            source:  (LI_Source)
                description:  Source Contribution: Bathymetric grid of the Mediterranean sea derived from multibeam swath sonar bathymetric surveys downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  CIESM Morpho-bathymetry of the Mediterranean Sea
                    date:  (CI_Date)
                        date:  2005-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Mediterranean Science Commission (CIESM)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.ciesm.org/
                                name:  Morpho-bathymetry of the Mediterranean Sea
                                description:  Grid derived from multibeam swath sonar bathymetric surveys
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  2005-01-01
            source:  (LI_Source)
                description:  Source Contribution: Grid derived from known soundings and sea-surface altimetry measurements downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  Measured and Estimated Seafloor Topography
                    date:  (CI_Date)
                        date:  2008-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Scripps Institute of Oceanography (SIO)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://topex.ucsd.edu/marine_topo/
                                name:  Measured and Estimated Seafloor Topography
                                description:  Grid derived from known soundings and sea-surface altimetry measurements
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1997-01-01
                            endPosition:  2008-01-01
            source:  (LI_Source)
                description:  Source Contribution: High resolution spherical grid topography of the Baltic Sea downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  A high resolution spherical grid topography of the Baltic Sea 2nd edition
                    date:  (CI_Date)
                        date:  2001-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Leibniz Institute for Baltic Sea Research (LIBSR)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.io-warnemuende.de/topography-of-the-baltic-sea.html
                                name:  A high resolution spherical grid topography of the Baltic Sea 2nd edition
                                description:  High resolution spherical grid topography of the Baltic Sea
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  2001-01-01
            source:  (LI_Source)
                description:  Source Contribution: Digital data base that contains all available bathymetric data north of 64 degrees North downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  International Bathymetry Chart of the Arctic Ocean (IBCAO)
                    date:  (CI_Date)
                        date:  2008-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  International Bathymetric Chart of the Arctic Ocean (IBCAO) version 2.0
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.ngdc.noaa.gov/mgg/bathymetry/arctic/arctic.html
                                name:  IBCAO
                                description:  Digital data base that contains all available bathymetric data north of 64 degrees North
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1999-01-01
                            endPosition:  2008-01-01
            source:  (LI_Source)
                description:  Source Contribution: U.S Coastal Relief Model downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  NGDC U.S Coastal Relief Model
                    date:  (CI_Date)
                        date:  2005-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NEDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.ngdc.noaa.gov/mgg/coastal/crm.html
                                name:  U.S Coastal Relief Model
                                description:  Integrated coastal bathymetric and topographic relief model
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1999-01-01
                            endPosition:  2005-01-01
            source:  (LI_Source)
                description:  Source Contribution: U.S Great Lakes Bathymetry downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  NGDC U.S Great Lakes Bathymetry
                    date:  (CI_Date)
                        date:  2005-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NEDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.ngdc.noaa.gov/mgg/greatlakes/greatlakes.html
                                name:  U.S Great Lakes Bathymetry
                                description:  Grid of U.S Great Lakes bathymetry
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1996-01-01
                            endPosition:  2005-01-01
            source:  (LI_Source)
                description:  Source Contribution: gridded topographic data downloaded from web site. ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  Shuttle Radar Topography Mission (SRTM)
                    date:  (CI_Date)
                        date:  2008-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  NASA > National Aeronautics and Space Administration (NASA)
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                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://srtm.usgs.gov/
                                name:  Shuttle Radar Topography Mission
                                description:  global topography
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  2000-01-01
            source:  (LI_Source)
                description:  Source Contribution: gridded topographic data downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  Global Land One-km Base Elevation (GLOBE)
                    date:  (CI_Date)
                        date:  1999-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NEDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.ngdc.noaa.gov/mgg/topo/globe.html
                                name:  Global Land One-km Base Elevation (GLOBE)
                                description:  A 30-arc-second (1-km) gridded, quality-controlled global Digital Elevation Model (DEM)
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1940-01-01
                            endPosition:  1999-01-01
            source:  (LI_Source)
                description:  Source Contribution: NSIDC 400 m elevation grid of Antarctica ice surface downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  NSIDC Antarctica Radarsat Antarctic Mapping Project (RAMP) Topography
                    date:  (CI_Date)
                        date:  2001-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  National Snow and Ice Data Center (NSIDC)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://nsidc.org/data/nsidc-0082.html
                                name:  RAMP DEM Version 2
                                description:  400 m grid of Antarctica ice surface
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1940-01-01
                            endPosition:  2001-01-01
            source:  (LI_Source)
                description:  Source Contribution: NSIDC 5 km elevation grid of Greenland bedrock downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  NSIDC Greenland Bedrock
                    date:  (CI_Date)
                        date:  2001-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  National Snow and Ice Data Center (NSIDC)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://nsidc.org/data/nsidc-0092.html
                                name:  Greenland 5 km DEM, Ice Thickness, and Bedrock Elevation Grids
                                description:  5 km elevation grid of Greenland bedrock
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1970-01-01
                            endPosition:  2001-01-01
            source:  (LI_Source)
                description:  Source Contribution: Antarctica bedrock elevation grid downloaded from web site ; Source Type: online
                sourceCitation:  (CI_Citation)
                    title:  EISMINT and SCAR Antarctica BEDMAP
                    date:  (CI_Date)
                        date:  2000-01-01
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  European Ice Sheet Modeling Initiative (EISMINT) and Scientific Committee on Antarctic Research (SCAR)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        positionName:  Citation URL
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.antarctica.ac.uk//bas_research/data/access/bedmap/
                                name:  A new ice thickness and subglacial topographic model of the Antarctic
                                description:  Antarctica bedrock elevation grid
                                function:  (CI_OnLineFunctionCode) download
                        role:
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1996-01-01
                            endPosition:  2000-01-01
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) annually
        dateOfNextUpdate:  2014-06-01
        maintenanceNote:  This metadata was automatically generated from the Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata standard (version FGDC-STD-012-2002) using the 2012-08-07 version of the FGDC RSE to ISO 19115-2 transform for DEMs.
        maintenanceNote:  Translated from FGDC 2012-08-08T17:16:45.609-06:00
        maintenanceNote:  Last Metadata Review Date: 2013-05-31
        contact:  (CI_ResponsibleParty)
            individualName:  Kelly Carignan
            organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
            contactInfo:  (CI_Contact)
                address:  (CI_Address)
                    electronicMailAddress:  kelly.carignan@noaa.gov
            role:  (CI_RoleCode) pointOfContact