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referenceSystemInfo
identificationInfo
distributionInfo
dataQualityInfo
dataQualityInfo
metadataMaintenance

2-minute Gridded Global Relief Data (ETOPO2) v2
 (MI_Metadata)
    fileIdentifier:  gov.noaa.ngdc.mgg.dem:301
    hierarchyLevel:  (MD_ScopeCode) dataset
    contact:  (CI_ResponsibleParty)
        organisationName:  NOAA National Centers for Environmental Information
        contactInfo:  (CI_Contact)
            address:  (CI_Address)
                electronicMailAddress:  ncei.info@noaa.gov
            onlineResource:  (CI_OnlineResource)
                linkage: https://www.ncei.noaa.gov/contact
                name:  NCEI Contact Information
                description:  Information for contacts at NCEI.
                function:  (CI_OnLineFunctionCode) information
        role:  (CI_RoleCode) pointOfContact
    dateStamp:  2023-09-14-06:00
    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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    spatialRepresentationInfo:  (MD_GridSpatialRepresentation)
        numberOfDimensions:  3
        axisDimensionProperties:  (MD_Dimension)
            dimensionName:  (MD_DimensionNameTypeCode) row
            dimensionSize:  5400
            resolution:
              Measure:  2
        axisDimensionProperties:  (MD_Dimension)
            dimensionName:  (MD_DimensionNameTypeCode) column
            dimensionSize:  10800
            resolution:
              Measure:  2
        axisDimensionProperties:  (MD_Dimension)
            dimensionName:  (MD_DimensionNameTypeCode) vertical
            dimensionSize:  1
        cellGeometry:  (MD_CellGeometryCode) area
        transformationParameterAvailability:  true
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    referenceSystemInfo:  (MD_ReferenceSystem)
        referenceSystemIdentifier:  (RS_Identifier)
            authority:  (CI_Citation)
                title:  World Geodetic System 1984
                alternateTitle:  WGS 84
                date:  (CI_Date)
                    date:  2007-08-27
                    dateType:  (CI_DateTypeCode) revision
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (withheld)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://epsg.org/crs_4326/WGS-84.html
                            name:  WGS 84
                            description:  GML of World Geodetic System 1984 coordinate reference system.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) resourceProvider
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  European Petroleum Survey Group
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://epsg.org/home.html
                            name:  European Petroleum Survey Group Geodetic Parameter Registry
                            description:  Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
                            function:  (CI_OnLineFunctionCode) search
                    role:  (CI_RoleCode) publisher
            code:  urn:ogc:def:crs:EPSG::4326
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    referenceSystemInfo:  (MD_ReferenceSystem)
        referenceSystemIdentifier:  (RS_Identifier)
            authority:  (CI_Citation)
                title:  Mean Sea Level depth
                alternateTitle:  MSL depth
                date:  (CI_Date)
                    date:  2012-08-10
                    dateType:  (CI_DateTypeCode) revision
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (withheld)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://epsg.org/crs_5715/MSL-depth.html
                            name:  MSL depth
                            description:  GML for Vertical CRS in EPGS Registry.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) resourceProvider
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  European Petroleum Survey Group
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://epsg.org/home.html
                            name:  European Petroleum Survey Group Geodetic Parameter Registry
                            description:  Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
                            function:  (CI_OnLineFunctionCode) search
                    role:  (CI_RoleCode) publisher
            code:  urn:ogc:def:crs:EPSG::5715
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    identificationInfo:  (MD_DataIdentification)
        citation:  (CI_Citation)
            title:  2-minute Gridded Global Relief Data (ETOPO2) v2
            date:  (CI_Date)
                date:  2006-09-29
                dateType:  (CI_DateTypeCode) publication
            identifier:  (MD_Identifier)
                authority:  (CI_Citation)
                    title:  International DOI Foundation (IDF)
                    date: (inapplicable)
                code:
                  Anchor:  DOI doi:10.7289/V5J1012Q
            identifier:  (MD_Identifier)
                authority:  (CI_Citation)
                    title:  NOAA National Centers for Environmental Information
                    date: (inapplicable)
                code:  NCEI Metadata ID: gov.noaa.ngdc.mgg.dem:301
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  NOAA National Centers for Environmental Information
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  NOAA National Geophysical Data Center
                role:  (CI_RoleCode) author
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName: (inapplicable)
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: https://www.ngdc.noaa.gov/mgg/global/etopo2.html
                        protocol:  http
                        name:  2-minute Gridded Global Relief Data (ETOPO2) v2 (Version Superseded)
                        description:  Web page for ETOPO2v2 with full descriptions of the data
                        function:  (CI_OnLineFunctionCode) information
                role: (inapplicable)
            presentationForm:  (CI_PresentationFormCode) mapDigital
        abstract:  This version has been superseded by a newer version. It is highly recommended for users to access the current version. Users should only access this superseded version for special cases, such as reproducing studies. Two-minute gridded global relief for both ocean and land areas are available in the ETOPO2v2 (2006) database. ETOPO2v2 replaced ETOPO2 (2001). The historic 2-minute (ETOPO2v2) and 5-minute (ETOPO5) data are deprecated, but still available.
        purpose:  Global Gridded 2-minute Database
        status:  (MD_ProgressCode) superseded
        status:  (MD_ProgressCode) historicalArchive
        pointOfContact:  (CI_ResponsibleParty)
            organisationName:  NOAA National Centers for Environmental Information
            contactInfo:  (CI_Contact)
                address:  (CI_Address)
                    electronicMailAddress:  ncei.info@noaa.gov
                onlineResource:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/contact
                    name:  NCEI Contact Information
                    description:  Information for contacts at NCEI.
                    function:  (CI_OnLineFunctionCode) information
            role:  (CI_RoleCode) pointOfContact
        pointOfContact:  (CI_ResponsibleParty)
            organisationName:  NOAA National Centers for Environmental Information
            positionName:  DEM Information
            contactInfo:  (CI_Contact)
                address:  (CI_Address)
                    electronicMailAddress:  dem.info@noaa.gov
            role:  (CI_RoleCode) pointOfContact
        resourceMaintenance:  (MD_MaintenanceInformation)
            maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) notPlanned
        graphicOverview:  (MD_BrowseGraphic)
            fileName: https://gis.ngdc.noaa.gov/arcgis/rest/directories/arcgisoutput/DEM_mosaics/DEM_global_mosaic_hillshade_ImageServer/_ags_3198e110_9226_41c1_8f2f_85c02b414e01.png
            fileDescription:  Thumbnail of DEM
            fileType:  PNG
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Earth Science > Land Surface > Topography > Terrain Elevation
            keyword:  Earth Science > Land Surface > Topography > Terrain Elevation > Topographical Relief Maps
            keyword:  Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Science Keywords
                date:  (CI_Date)
                    date:  2020-01-09
                    dateType:  (CI_DateTypeCode) publication
                edition:  9.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA Goddard Space Flight Center, Earth Science Data and Information System
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Earth Science > Interior & Crust
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  Uncontrolled Keywords
                date: (unknown)
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Geographic Region > Global Land
            keyword:  Geographic Region > Global Ocean
            type:  (MD_KeywordTypeCode) place
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Location Keywords
                date:  (CI_Date)
                    date:  2020-01-09
                    dateType:  (CI_DateTypeCode) publication
                edition:  9.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA Goddard Space Flight Center, Earth Science Data and Information System
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
        descriptiveKeywords:  (MD_Keywords)
            keyword:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            keyword:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
            type:  (MD_KeywordTypeCode) dataCentre
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Data Center Keywords
                date:  (CI_Date)
                    date:  2020-01-09
                    dateType:  (CI_DateTypeCode) publication
                edition:  9.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA Goddard Space Flight Center, Earth Science Data and Information System
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
        resourceConstraints:  (MD_Constraints)
            useLimitation:  This version has been superseded by a newer version. It is highly recommended for users to access the current version. Users should only access this superseded version for special cases, such as reproducing studies. If necessary, this version can be accessed by contacting NCEI.
        resourceConstraints:  (MD_LegalConstraints)
            accessConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
        resourceConstraints:  (MD_Constraints)
            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.
        resourceConstraints:  (MD_Constraints)
            useLimitation:  Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
        resourceConstraints:  (MD_LegalConstraints)
            useLimitation:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Cite as: NOAA National Geophysical Data Center. 2006: 2-minute Gridded Global Relief Data (ETOPO2) v2. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5J1012Q. Accessed [date].
        aggregationInfo:  (MD_AggregateInformation)
            aggregateDataSetName:  (CI_Citation)
                title:  ETOPO 2022 15 Arc-Second Global Relief Model
                date:  (CI_Date)
                    date:  2022-10-01
                    dateType:  (CI_DateTypeCode) publication
                identifier:  (MD_Identifier)
                    authority:  (CI_Citation)
                        title:  International DOI Foundation (IDF)
                        date: (inapplicable)
                    code:
                      Anchor:  DOI 10.25921/fd45-gt74
                identifier:  (MD_Identifier)
                    authority:  (CI_Citation)
                        title:  NOAA National Centers for Environmental Information
                        date: (inapplicable)
                    code:  NCEI Metadata ID: gov.noaa.ngdc.mgg.dem:etopo_2022
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NOAA National Centers for Environmental Information
                    role:  (CI_RoleCode) originator
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NOAA National Centers for Environmental Information
                    role:  (CI_RoleCode) publisher
            associationType:  (DS_AssociationTypeCode) crossReference
        spatialRepresentationType:  (MD_SpatialRepresentationTypeCode) grid
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) elevation
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  -180.0
                eastBoundLongitude:  180.0
                southBoundLatitude:  -90.0
                northBoundLatitude:  90.0
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimeInstant:
                    timePosition:  2006-09-29
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    distributionInfo:  (MD_Distribution)
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  NOAA National Centers for Environmental Information
                contactInfo:  (CI_Contact)
                    address:  (CI_Address)
                        electronicMailAddress:  ncei.info@noaa.gov
                    onlineResource:  (CI_OnlineResource)
                        linkage: https://www.ncei.noaa.gov/contact
                        name:  NCEI Contact Information
                        description:  Information for contacts at NCEI.
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                fees:  In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
                orderingInstructions:  Contact NCEI for other distribution options and instructions.
            distributorFormat:  (MD_Format)
                name:  ASCII
                version: (unknown)
            distributorFormat:  (MD_Format)
                name:  Raw Binary 16-bit integer
                version: (unknown)
            distributorFormat:  (MD_Format)
                name:  ArcMap Floating Point Raster and HDR file
                version: (unknown)
            distributorFormat:  (MD_Format)
                name:  HDF5 floating point data file
                version: (unknown)
            distributorFormat:  (MD_Format)
                name:  GMT grid file (16-bit Binary integer or 32-bit Floating Point)
                version: (unknown)
            distributorFormat:  (MD_Format)
                name:  DVD-ROM
                version: (unknown)
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.dem:301/html
                    protocol:  HTTPS
                    name:  Metadata Landing Page
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ngdc.noaa.gov/mgg/global/etopo2.html
                    name:  ETOPO2 Home Page
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ngdc.noaa.gov/mgg/fliers/06mgg01.html
                    name:  information
                    description:  information
                    function:  (CI_OnLineFunctionCode) information
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) repository
            levelDescription:  (MD_ScopeDescription)
                other:  NOAA National Centers for Environmental Information
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
                dateTime:
                  DateTime:  2015-04-22T00:00:00
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
        report:  (DQ_CompletenessCommission)
            evaluationMethodDescription:  Dataset deprecated
            result: (unknown)
        report:  (DQ_ConceptualConsistency)
            measureDescription:  Unknown
            result: (unknown)
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description: https://www.ngdc.noaa.gov/mgg/global/relief/ETOPO2/ETOPO2v2-2006/ETOPO2v2g/ETOPO2v2g_ReadMe.txt or https://www.ngdc.noaa.gov/mgg/global/relief/ETOPO2/ETOPO2v2-2006/ETOPO2v2c/ETOPO2v2c_ReadMe.txt depending in choice of data base
                dateTime:
                  DateTime:  2006-01-01T00:00:00
                processor:  (CI_ResponsibleParty)
                    individualName:  Peter W. Sloss
                    organisationName:  NOAA National Geophysical Data Center
                    positionName:  Physical Scientist
                    role:  (CI_RoleCode) processor
            source:  (LI_Source)
                description:  Source Contribution: Smith and Sandwell 1' grid data "Gebco_SandS_blend.bi2", resampled to 2' cell averages ; Source Type: no longer available online
                sourceCitation:  (CI_Citation)
                    title:  Gebco_SandS_blend
                    date:  (CI_Date)
                        date:  2004-04-13
                        dateType:  (CI_DateTypeCode) publication
                    identifier:  (MD_Identifier)
                        code:  S_and_S
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  NOAA/NOS and Scripps Institution of Oceanography
                        role:  (CI_RoleCode) originator
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  2004-04-13
            source:  (LI_Source)
                description:  Source Contribution: Global Land One-kilometer Base Elevation (GLOBE) data ; Source Type: Online
                sourceCitation:  (CI_Citation)
                    title:  GLOBE
                    date:  (CI_Date)
                        date:  1998-09-01
                        dateType:  (CI_DateTypeCode) publication
                    identifier:  (MD_Identifier)
                        code:  GLOBE
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  NOAA National Geophysical Data Center (comp)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (inapplicable)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://www.ngdc.noaa.gov/mgg/topo/globe.html
                                protocol:  http
                                name:  GLOBE 30-second gridded land elevation data
                                description:  GLOBE 30-second gridded land elevation data
                                function:  (CI_OnLineFunctionCode) information
                        role: (inapplicable)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  1998-09-01
            source:  (LI_Source)
                description:  Source Contribution: 1-minute latitude-longitude grid of elevations, interpolated from the original 250-meter polar stereographic grid ; Source Type: Online
                sourceCitation:  (CI_Citation)
                    title:  International Bathymetric Chart of the Arctic Ocean
                    date:  (CI_Date)
                        date:  2001-01-01
                        dateType:  (CI_DateTypeCode) publication
                    identifier:  (MD_Identifier)
                        code:  IBCAO
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Intergovernmental Oceanographic Commission (IOC), the International Arctic Science Committee (IASC), the International Hydrographic Organization (IHO), the US Office of Naval Research (ONR), and the US National Geophysical Data Center (NGDC)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (inapplicable)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://www.ngdc.noaa.gov/mgg/bathymetry/arctic/geodata/grd/netcdf/
                                protocol:  http
                                name:  IBCAO gridded elevations
                                description:  IBCAO gridded elevations
                                function:  (CI_OnLineFunctionCode) information
                        role: (inapplicable)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  2001-01-01
            source:  (LI_Source)
                description:  Source Contribution: Digitized contours of Caspian Sea bathymetry ; Source Type: Online
                sourceCitation:  (CI_Citation)
                    title:  Caspian Sea Bathymetry
                    date:  (CI_Date)
                        date:  1999-05-01
                        dateType:  (CI_DateTypeCode) publication
                    identifier:  (MD_Identifier)
                        code:  Caspian
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Caspian Environment Programme
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (inapplicable)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://archive.iwlearn.net/www.caspianenvironment.org/www.caspianenvironment.org/dim/menu5.htm?doc=default.htm
                                protocol:  http
                                name:  Coastline of the Caspian Sea
                                description:  This page contains some useful GIS data for the Caspian Sea region presented in the ASCII format, in the Surfer 7.0 format (Golden Software, Inc.), and in the Shape-file format (ArcView GIS files)
                                function:  (CI_OnLineFunctionCode) information
                        role: (inapplicable)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  1999-05-01
            source:  (LI_Source)
                description:  Source Contribution: Coastal Relief Model elevation and bathymetry data for USA waters ; Source Type: Online
                sourceCitation:  (CI_Citation)
                    title:  Coastal Relief Model
                    date:  (CI_Date)
                        date:  2006-01-01
                        dateType:  (CI_DateTypeCode) publication
                    identifier:  (MD_Identifier)
                        code:  CRM
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  NOAA National Geophysical Data Center (comp)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (inapplicable)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://www.ngdc.noaa.gov/mgg/coastal/coastal.html
                                protocol:  http
                                name:  NGDC Coastal Relief Model
                                description:  3-second gridded bathymetric and elevation data from NGDC
                                function:  (CI_OnLineFunctionCode) information
                        role: (inapplicable)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  2006-01-01
            source:  (LI_Source)
                description:  Source Contribution: Gridded bathymetry for the US Great Lakes ; Source Type: Online
                sourceCitation:  (CI_Citation)
                    title:  Great Lakes Gridded Bathymetry
                    date:  (CI_Date)
                        date:  2006-01-01
                        dateType:  (CI_DateTypeCode) publication
                    identifier:  (MD_Identifier)
                        code:  GLM
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  NOAA National Geophysical Data Center (comp)
                        role:  (CI_RoleCode) originator
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (inapplicable)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://www.ngdc.noaa.gov/mgg/greatlakes/greatlakes.html
                                protocol:  http
                                name:  Great Lakes bathymetry
                                description:  3-second Gridded bathymetric data from the US Great Lakes
                                function:  (CI_OnLineFunctionCode) information
                        role: (inapplicable)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimeInstant:
                            timePosition:  2006-01-01
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        maintenanceNote:  Modified for compliance to NCEI Template v1.2.