| 2012-2013 U.S. Geological Survey LiDAR: Territory of Guam | spatialRepresentationInfo|
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| (MI_Metadata) fileIdentifier: gov.noaa.nmfs.inport:49737 language: LanguageCode: eng characterSet: (MD_CharacterSetCode) UTF8 hierarchyLevel: (MD_ScopeCode) dataset contact: (CI_ResponsibleParty) organisationName: OCM Partners contactInfo: (CI_Contact) phone: (CI_Telephone) voice: (missing) address: (CI_Address) role: (CI_RoleCode) resourceProvider contact: (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: Website description: NOAA Office for Coastal Management Home Page function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) pointOfContact dateStamp: DateTime: 2020-09-15T00:00:00 metadataStandardName: ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data metadataStandardVersion: ISO 19115-2:2009(E) return to top spatialRepresentationInfo: return to top referenceSystemInfo: (MD_ReferenceSystem) 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) onlineResource: (CI_OnlineResource) 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 (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 citedResponsibleParty: (CI_ResponsibleParty) organisationName: (withheld) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) 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. function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) resourceProvider citedResponsibleParty: (CI_ResponsibleParty) organisationName: European Petroleum Survey Group contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) 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. function: (CI_OnLineFunctionCode) search role: (CI_RoleCode) publisher VerticalCS: metaDataProperty: CommonMetaData: type: vertical informationSource: OGP revisionDate: 2006-11-28 isDeprecated: false identifier: urn:ogc:def:cs:EPSG::6499 name: Vertical CS. Axis: height (H). Orientation: up. UoM: meter. remarks: Used in vertical coordinate reference systems. axis: CoordinateSystemAxis: 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 return to top 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 citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) 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 role: (inapplicable) citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://coast.noaa.gov protocol: WWW:LINK-1.0-http--link name: Citation URL 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: 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: 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://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/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: Elevation keyword: LiDAR keyword: Model keyword: Remote Sensing keyword: Topography/Bathymetry type: (MD_KeywordTypeCode) theme 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: Guam keyword: Territory of Guam keyword: US type: (MD_KeywordTypeCode) place descriptiveKeywords: (MD_Keywords) keyword: Lidar - partner (no harvest) type: (MD_KeywordTypeCode) project thesaurusName: (CI_Citation) title: InPort date: (inapplicable) 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://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4939/supplemental/guam2012_usgs_m4939.kmz A final lidar report can be found here: https://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4939/supplemental/guam2012_usgs_m4939_lidarreport.pdf An accuracy assessment for the project may be viewed here: https://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4939/supplemental/guam2012_usgs_m4939_surveyreport.pdf return to top contentInfo: (MD_FeatureCatalogueDescription) complianceCode: false language: LanguageCode: eng includedWithDataset: false featureCatalogueCitation: (CI_Citation) title: none date: (unavailable) return to top 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: 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://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4939 protocol: WWW:LINK-1.0-http--link name: Bulk Download description: Simple download of data files. function: (CI_OnLineFunctionCode) download return to top 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: 2020-10-20T04:27:28 processor: (CI_ResponsibleParty) individualName: NOAA Office for Coastal Management contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: coastal.info@noaa.gov role: (CI_RoleCode) processor | |