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2012-2013 U.S. Geological Survey LiDAR: Territory of Guam
 (MI_Metadata)
    fileIdentifier:  gov.noaa.nmfs.inport:49737
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      LanguageCode:  eng
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    contact:  (CI_ResponsibleParty)
        organisationName:  OCM Partners
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            address:  (CI_Address)
        role:  (CI_RoleCode) resourceProvider
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        organisationName:  NOAA Office for Coastal Management
        contactInfo:  (CI_Contact)
            phone:  (CI_Telephone)
                voice:  (843) 740-1202
            address:  (CI_Address)
                deliveryPoint:  2234 South Hobson Ave
                city:  Charleston
                administrativeArea:  SC
                postalCode:  29405-2413
                country: (missing)
                electronicMailAddress:  coastal.info@noaa.gov
            onlineResource:  (CI_OnlineResource)
                linkage: https://coast.noaa.gov
                protocol:  WWW:LINK-1.0-http--link
                name:  NOAA Office for Coastal Management Website
                description:  NOAA Office for Coastal Management Home Page
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    dateStamp:
      DateTime:  2022-08-09T17:11:36
    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:
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          referenceSystemIdentifier:  (RS_Identifier)
              authority:  (CI_Citation)
                  title:  NAD83(MA11)
                  date:  (CI_Date)
                      date:  2008-11-12
                      dateType:  (CI_DateTypeCode) publication
                  citedResponsibleParty:  (CI_ResponsibleParty)
                      organisationName:  European Petroleum Survey Group
                      contactInfo:  (CI_Contact)
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                              linkage: https://apps.epsg.org/api/v1/CoordRefSystem/6325/export/?format=gml
                      role: (missing)
              code:  urn:ogc:def:crs:EPSG:6325
              version:  6.18.3
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      referenceSystemInfo:  (MD_ReferenceSystem)
          referenceSystemIdentifier:  (RS_Identifier)
              authority:  (CI_Citation)
                  title:  Guam Vertical Datum of 2004 (GUVD04) (GEOID12B) meters
                  alternateTitle:  Guam Vertical Datum of 2004 (GUVD04) (GEOID12B) meters
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                              linkage: https://apps.epsg.org/api/v1/VerticalCoordRefSystem/6644/?api_key=gml
                              name:  Guam Vertical Datum of 2004 (GUVD04) (GEOID12B) meters
                              description:  Link to Geographic Markup Language (GML) description of reference system.
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                      organisationName:  European Petroleum Survey Group
                      contactInfo:  (CI_Contact)
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                              linkage: https://www.epsg.org/
                              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.
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                        revisionDate:  2006-11-28
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                    identifier:  urn:ogc:def:cs:EPSG::6499
                    name:  Vertical CS. Axis: height (H). Orientation: up. UoM: meter.
                    remarks:  Used in vertical coordinate reference systems.
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                        descriptionReference:  urn:ogc:def:axis-name:EPSG::9904
                        identifier:  urn:ogc:def:axis:EPSG::114
                        axisAbbrev:  H
                        axisDirection:  up
              code:  urn:ogc:def:crs:EPSG::6644
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    identificationInfo:  (MD_DataIdentification)
        citation:  (CI_Citation)
            title:  2012-2013 U.S. Geological Survey LiDAR: Territory of Guam
            alternateTitle:  guam2012_usgs_m4939_metadata
            date:  (CI_Date)
                date:  2015-07-13
                dateType:  (CI_DateTypeCode) publication
            identifier:  (MD_Identifier)
                authority:  (CI_Citation)
                    title:  NOAA/NMFS/EDM
                    date: (inapplicable)
                code:
                  Anchor:  InPort Catalog ID 49737
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                organisationName: (inapplicable)
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: https://www.fisheries.noaa.gov/inport/item/49737
                        protocol:  WWW:LINK-1.0-http--link
                        name:  Full Metadata Record
                        description:  View the complete metadata record on InPort for more information about this dataset.
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                    onlineResource:  (CI_OnlineResource)
                        linkage: https://coast.noaa.gov/dataviewer
                        protocol:  WWW:LINK-1.0-http--link
                        name:   Citation URL
                        description:  Online Resource
                        function:  (CI_OnLineFunctionCode) download
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                        linkage: https://coast.noaa.gov
                        protocol:  WWW:LINK-1.0-http--link
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                        description:  Online Resource
                        function:  (CI_OnLineFunctionCode) download
                role: (inapplicable)
            presentationForm: (unknown)
        abstract:  Territory of Guam, LiDAR Task G11PD01189 This task order is for production of surface model products of The Territory of Guam. The models are produced from data acquired using airborne Light Detection and Ranging (LiDAR) sensors. The data is calibrated, classified and processed to produce surface models and products including Classified LAS, bare earth Digital Elevation Models (DEM), intensity raster images, shapefiles of road centerlines, forest canopy, building foot prints and breaklines of surface hydrology. This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data.
        purpose:  The United States Geological Survey requested surface data products and models that indicate surface conditions, drainage, vegetation, transportation routes and building structures to aid in analysis of land use, transportation, hydrologic, forest vegetation and recreational management. Data and products were referenced to the Universal Transverse Mercator (UTM) Coordinate System - Zone 55, based on the World Geodetic System of 1984 (WGS84) in meters. The vertical reference is Guam Vertical Datum of 2004 (GUVD04) in meters. For provisioning and storage, NOAA OCM converted the horizontal coordinates to geographic decimal degrees and vertical coordinates referenced to ellipsoidal heights.
        status:  (MD_ProgressCode) completed
        pointOfContact:  (CI_ResponsibleParty)
            organisationName:  NOAA Office for Coastal Management
            contactInfo:  (CI_Contact)
                phone:  (CI_Telephone)
                    voice:  (843) 740-1202
                address:  (CI_Address)
                    deliveryPoint:  2234 South Hobson Ave
                    city:  Charleston
                    administrativeArea:  SC
                    postalCode:  29405-2413
                    country: (missing)
                    electronicMailAddress:  coastal.info@noaa.gov
                onlineResource:  (CI_OnlineResource)
                    linkage: https://coast.noaa.gov
                    protocol:  WWW:LINK-1.0-http--link
                    name:  NOAA Office for Coastal Management Website
                    description:  NOAA Office for Coastal Management Home Page
                    function:  (CI_OnLineFunctionCode) information
            role:  (CI_RoleCode) pointOfContact
        pointOfContact:  (CI_ResponsibleParty)
            organisationName:  NOAA Office for Coastal Management
            contactInfo:  (CI_Contact)
                phone:  (CI_Telephone)
                    voice:  (843) 740-1202
                address:  (CI_Address)
                    deliveryPoint:  2234 South Hobson Ave
                    city:  Charleston
                    administrativeArea:  SC
                    postalCode:  29405-2413
                    country: (missing)
                    electronicMailAddress:  coastal.info@noaa.gov
                onlineResource:  (CI_OnlineResource)
                    linkage: https://coast.noaa.gov
                    protocol:  WWW:LINK-1.0-http--link
                    name:  NOAA Office for Coastal Management Website
                    description:  NOAA Office for Coastal Management Home Page
                    function:  (CI_OnLineFunctionCode) information
            role:  (CI_RoleCode) custodian
        resourceMaintenance:  (MD_MaintenanceInformation)
            maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        graphicOverview:  (MD_BrowseGraphic)
            fileName: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/4939/supplemental/guam2012_usgs_m4939.kmz
            fileDescription:  This graphic shows the lidar coverage for the 2012 lidar acquisition for Guam.
            fileType:  kmz
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Geographic Information > LiDAR
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  CoRIS Discovery Thesaurus
                date: (missing)
        descriptiveKeywords:  (MD_Keywords)
            keyword:  COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000)
            keyword:  OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000)
            type:  (MD_KeywordTypeCode) place
            thesaurusName:  (CI_Citation)
                title:  CoRIS Place Thesaurus
                date: (missing)
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Lidar - partner (no harvest)
            type:  (MD_KeywordTypeCode) project
            thesaurusName:  (CI_Citation)
                title:  InPort
                date: (inapplicable)
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Cite As: OCM Partners, [Date of Access]: 2012-2013 U.S. Geological Survey LiDAR: Territory of Guam [Data Date Range], https://www.fisheries.noaa.gov/inport/item/49737.
        resourceConstraints:  (MD_Constraints)
            useLimitation:  NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
        resourceConstraints:  (MD_LegalConstraints)
            accessConstraints:  (MD_RestrictionCode) otherRestrictions
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Access Constraints: None | Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. These data depict the heights at the time of the survey and are only accurate for that time. None. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. | Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of Woolpert, USGS, NOAA, the Office for Coastal Management or its partners.
        resourceConstraints:  (MD_SecurityConstraints)
            classification:  (MD_ClassificationCode) unclassified
            classificationSystem: (missing)
            handlingDescription: (missing)
        aggregationInfo:  (MD_AggregateInformation)
            aggregateDataSetName:  (CI_Citation)
                title:  NOAA Data Management Plan (DMP)
                date: (unknown)
                identifier:  (MD_Identifier)
                    authority:  (CI_Citation)
                        title:  NOAA/NMFS/EDM
                        date: (inapplicable)
                    code:  49737
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (inapplicable)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocmp/dmp/pdf/49737.pdf
                            protocol:  WWW:LINK-1.0-http--link
                            name:  NOAA Data Management Plan (DMP)
                            description:  NOAA Data Management Plan for this record on InPort.
                            function:  (CI_OnLineFunctionCode) information
                    role: (inapplicable)
            associationType:  (DS_AssociationTypeCode) crossReference
        spatialRepresentationType:  (MD_SpatialRepresentationTypeCode) vector
        language:  eng; US
        topicCategory:  (MD_TopicCategoryCode) elevation
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  144.612
                eastBoundLongitude:  144.958
                southBoundLatitude:  13.235
                northBoundLatitude:  13.66
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    description:   | Currentness: Ground Condition
                    beginPosition:  2012-01-18
                    endPosition:  2013-02-09
        supplementalInformation:  A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/4939/supplemental/guam2012_usgs_m4939.kmz A final lidar report can be found here: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/4939/supplemental/guam2012_usgs_m4939_lidarreport.pdf An accuracy assessment for the project may be viewed here: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/4939/supplemental/guam2012_usgs_m4939_surveyreport.pdf
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    contentInfo:  (MD_FeatureCatalogueDescription)
        complianceCode:  false
        language:
          LanguageCode:  eng
        includedWithDataset:  false
        featureCatalogueCitation:  (CI_Citation)
            title:  none
            date: (unavailable)
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    distributionInfo:  (MD_Distribution)
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  NOAA Office for Coastal Management
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  (843) 740-1202
                    address:  (CI_Address)
                        deliveryPoint:  2234 South Hobson Ave
                        city:  Charleston
                        administrativeArea:  SC
                        postalCode:  29405-2413
                        country: (missing)
                        electronicMailAddress:  coastal.info@noaa.gov
                    onlineResource:  (CI_OnlineResource)
                        linkage: https://coast.noaa.gov
                        protocol:  WWW:LINK-1.0-http--link
                        name:  NOAA Office for Coastal Management Website
                        description:  NOAA Office for Coastal Management Home Page
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) distributor
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4939
                protocol:  WWW:LINK-1.0-http--link
                name:  Customized Download
                description:  Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
                function:  (CI_OnLineFunctionCode) download
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/4939/index.html
                protocol:  WWW:LINK-1.0-http--link
                name:  Bulk Download
                description:  Simple download of data files.
                function:  (CI_OnLineFunctionCode) download
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Horizontal Positional Accuracy
            evaluationMethodDescription:  Flown at 500 to 600 meters above ground level (AGL) the data has a horizontal accuracy of 0.11 meters (per manufacturers system specifications). ; Quantitative Value: 0.11 meters, Test that produced the value: Per manafacturers system specifications.
            result: (missing)
        report:  (DQ_AbsoluteExternalPositionalAccuracy)
            nameOfMeasure:  Vertical Positional Accuracy
            evaluationMethodDescription:  Ground survey check points were collected by AeroMetric, Inc. for use in vertical accuracy evaluation. In vertical accuracy evaluation, the ground survey check points of various ground cover categories are compared to vertical values of a TIN or DEM derived from the LiDAR data, differences in elevation are calculated to establish a RMSE. Check point differences beyond the 95th Percentile of all data points are investigated to determine if there is an indication of problems with the data. This data set did not include any vertical differences significantly beyond the 95th Percentile value of check point differences. Ground survey check points were made in February and March of 2012. Ground cover categories include Urban, Open Terrain, Tall Weeds, Brush and Forest. Separate check points were made for use in establishing point cloud position. ; Quantitative Value: 0.08 meters, Test that produced the value: Tested 8.0 cm (0.262 ft) RMSEz of the LiDAR data in Open Terrain as tested against the Triangulated Integrated Network (TIN). ; Quantitative Value: 0.157 meters, Test that produced the value: Tested 15.7 cm (0.515 ft) FVA at the 95% confidence level of the LiDAR data in open terrain as tested against the Triangulated Integrated Network (TIN). ; Quantitative Value: 0.087 meters, Test that produced the value: Tested 8.7 cm (0.285 ft) RMSEz in Open Terrain as tested against the DEM. ; Quantitative Value: 0.171 meters, Test that produced the value: Tested FVA of 17.1 cm (0.561 ft) at the 95% confidence level in Open Terrain as tested against the DEM. ; Quantitative Value: 0.154 meters, Test that produced the value: Tested 15.4 cm (0.505 ft) SVA at the 95th Percentile in the Open Terrain category against the DEM. ; Quantitative Value: 0.30 meters, Test that produced the value: Tested 30.0 cm (0.984 ft) SVA at the 95th Percentile in the Tall Weeds category against the DEM. ; Quantitative Value: 0.227 meters, Test that produced the value: Tested 22.7 cm (0.745 ft) SVA at the 95th Percentile in the Brush category against the DEM. ; Quantitative Value: 0.152 meters, Test that produced the value: Tested 15.2 cm (0.499 ft) SVA at the 95th Percentile in the Forest category against the DEM. ; Quantitative Value: 0.099 meters, Test that produced the value: Tested 9.9 cm (0.324 ft) SVA at the 95th Percentile in the Urban category against the DEM. ; Quantitative Value: 0.218 meters, Test that produced the value: Tested 21.8 cm (0.715 ft) CVA at the 95th Percentile in All Ground categories against the DEM.
            result: (missing)
        report:  (DQ_CompletenessCommission)
            nameOfMeasure:  Completeness Report
            evaluationMethodDescription:  The lidar data is visually inspected for completeness to ensure that are no void areas or missing data.
            result: (missing)
        report:  (DQ_ConceptualConsistency)
            nameOfMeasure:  Conceptual Consistency
            evaluationMethodDescription:  All formatted data cover the entire area specified for this project and are validated using a combination of commercial lidar processing software, GIS software, and proprietary programs to ensure proper formatting and loading prior to delivery.
            result: (missing)
        lineage:  (LI_Lineage)
            statement: (missing)
            processStep:  (LI_ProcessStep)
                description:  Ground based survey points are measured to be compared as check points with airborne data points. One hundred thirty-three survey points were collected throughout the island in various ground cover categories.
                dateTime:
                  DateTime:  2012-03-01T00:00:00
            processStep:  (LI_ProcessStep)
                description:  The LiDAR data was captured using a twin engine fixed wing aircraft equipped with an Optech ALTM Gemini LiDAR system. This system consists of Airborne Global Position System (ABGPS), inertial measurement unit (IMU), and laser sensor. The ABGPS collects XYZ coordinates of the laser sensor and the IMU calibrates the orientation of the aircraft. During flight, laser pulses are reflected from features on the surface and the system collects this data. The acquired LiDAR data receives a preliminary review to assure that complete coverage is obtained and to ensure the absence of data gaps. Acquisition parameters: 1. Scanner - Optech Gemini SN# 03SEN145 and 07SEN201 2. Flight Height - 450 to 600 meters above mean terrain 3. Scan Rate - 45 Hz 4. Field of View - 22 degrees 5. Pulse Rate - 70 kHz. GPS and IMU processing parameters: 1. Processing Programs and versions - Applanix - POSGPS and POSProc, versions 4.4, MMS version 5.2 2. Max separation between base stations during LiDAR collection - 0.12m 3. IMU processing monitored for consistency and smoothness - Yes GPS and IMU processing software: Optech's Dashmap version 5.20 and Applanix version 4.4,
                dateTime:
                  DateTime:  2013-05-01T00:00:00
            processStep:  (LI_ProcessStep)
                description:  1. Point Cloud data is imported to TerraScan in a Microstation V8 (V) CAD environment on a specified 1500 meter by 1500 meter tiling scheme. 2. Analyze the data for overall completeness and consistency. This is to ensure that there are no voids in the data collection. 3. Inspect for calibration errors in the dataset using the TerraMatch software. This is accomplished by sampling the data collected across all flight lines and classify the individual lines to ground. The software will use the ground-classified lines to compute corrections (Heading, Pitch, Roll, and Scale). 4. Orientation corrections (i.e. Calibration corrections) are applied (if needed) to the entire dataset. 5. Automatic surface classification is performed using algorithms with customized parameters to best fit the project area. Several areas of varying relief and planimetric features were inspected to verify the final ground surface. 6. AeroMetric used ground survey points in 'open terrain' land cover to verify accurate position of the LiDAR data and ground surface. TerraScan's Output Control Report (OCR) was used to compare the survey data to the LiDAR data. This routine searches the LiDAR dataset by X and Y coordinate, finds the closest LiDAR point and compares the vertical (Z) values to the known data collected in the field. Based on the QA/QC data, a bias adjustment was determined, and the results were applied (if necessary) to the LiDAR data. 7. Each tile is reviewed for accuracy and consistency of the macro ground classification. 8. Once the automatic processing and the testing of LiDAR is complete, AeroMetric reviews the generated bare-earth surface data to ensure that proper classification was achieved as part of a Quality Control process. Point classification follows the standard established by The American Society for Photogrammetry and Remote Sensing (ASPRS) for LAS data: Code 1 Processed, but unclassified Code 2 Bare Earth / Ground Code 3 Low Vegetation Code 4 Medium Vegetation Code 5 High Vegetation Code 6 Building Code 7 Noise (Low or High, Manually identified, if needed) Code 9 Water Code 10 Ignored Ground (Breakline proximity) 9. Classified LAS data is delivered on a per tile base and named according to the Tile Layout, based on coordinates at lower left corner of the tile.
                dateTime:
                  DateTime:  2013-06-01T00:00:00
            processStep:  (LI_ProcessStep)
                description:  The NOAA Office for Coastal Management (OCM) received the topographic files in classified LAZ format from USGS' ftp site. The data were received in UTM Zone 55N NAD83 coordinates (meters) and vertically referenced to Guam Vertical datum in meters. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. LAS files were compressed to LAZ format with LASTools. 2. LAS files were removed of any duplicated points and extraneous points were reclassified to noise. 3. The LAS files were transformed to geographic (decimal degrees), ellipsoidal coordinates (meters).
                dateTime:
                  DateTime:  2015-07-10T00:00:00
            processStep:  (LI_ProcessStep)
                description:  The data from the previous step was in WGS84 horizontally, but on the NAD83(MA11) ellipsoid vertically and erroneously tagged as NAD83 horizontally. The data was adjusted horizontally to NAD83(MA11) by applying a Helmert transform under the assumption that the WGS84 realization was equivalent to IGS08. No explicit documentation was found for which realization of WGS84 was used and IGS08 was the most logical for data collected in 2012. Transform parameters were those found at https://www.ngs.noaa.gov/CORS/coords.shtml#Col2Exp.
                dateTime:
                  DateTime:  2018-10-04T12:00:00
                processor:  (CI_ResponsibleParty)
                    organisationName:  Office for Coastal Management
                    role:  (CI_RoleCode) processor
            processStep:  (LI_ProcessStep)
                description:   The vertical values in this data set have been converted to reference Guam Vertical Datum of 2004 (GUVD04) (GEOID12B) meters, using the GEOID12B grids provided by the National Geodetic Survey. Any datum and projection transformations were then done with the Office for Coastal Management 'datum_shift' program. Compression to an LAZ file was done with the LAStools 'laszip' program and can be unzipped with the same free program (laszip.org) Processing notes:
                dateTime:
                  DateTime:  2023-07-01T05:12:49
                processor:  (CI_ResponsibleParty)
                    individualName:  NOAA Office for Coastal Management
                    contactInfo:  (CI_Contact)
                        address:  (CI_Address)
                            electronicMailAddress:  coastal.info@noaa.gov
                    role:  (CI_RoleCode) processor