| 2016 - 2019 USGS Lidar: Alabama 25 County | referenceSystemInfo|
|---|---|
| (MI_Metadata) fileIdentifier: gov.noaa.nmfs.inport:64305 language: LanguageCode: eng characterSet: (MD_CharacterSetCode) UTF8 hierarchyLevel: (MD_ScopeCode) dataset hierarchyLevelName: Elevation 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: NOAA Office for Coastal Management Website description: NOAA Office for Coastal Management Home Page function: (CI_OnLineFunctionCode) information role: (CI_RoleCode) pointOfContact dateStamp: DateTime: 2023-07-03T17:07:52 metadataStandardName: ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data metadataStandardVersion: ISO 19115-2:2009(E) return to top referenceSystemInfo: (MD_ReferenceSystem) referenceSystemIdentifier: (RS_Identifier) authority: (CI_Citation) title: NAD83(2011) 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/6318/export/?format=gml role: (missing) code: urn:ogc:def:crs:EPSG:6318 version: 6.18.3 return to top referenceSystemInfo: (MD_ReferenceSystem) referenceSystemIdentifier: (RS_Identifier) authority: (CI_Citation) title: North American Vertical Datum of 1988 (NAVD88) (GEOID18) meters alternateTitle: North American Vertical Datum of 1988 (NAVD88) (GEOID18) meters citedResponsibleParty: (CI_ResponsibleParty) organisationName: (withheld) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://apps.epsg.org/api/v1/VerticalCoordRefSystem/5703/?api_key=gml name: North American Vertical Datum of 1988 (NAVD88) (GEOID18) 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::5703 return to top spatialRepresentationInfo: return to top identificationInfo: (MD_DataIdentification) citation: (CI_Citation) title: 2016 - 2019 USGS Lidar: Alabama 25 County alternateTitle: al2016_25county_m9174_metadata.xml date: (CI_Date) date: 2016 dateType: (CI_DateTypeCode) creation date: (CI_Date) date: (missing) dateType: (CI_DateTypeCode) publication identifier: (MD_Identifier) authority: (CI_Citation) title: NOAA/NMFS/EDM date: (inapplicable) code: Anchor: InPort Catalog ID 64305 citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://www.fisheries.noaa.gov/inport/item/64305 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. function: (CI_OnLineFunctionCode) information role: (inapplicable) citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://coast.noaa.gov/htdata/lidar2_z/geoid18/data/9174/breaklines/ protocol: WWW:LINK-1.0-http--link name: Hydro breaklines description: Link to the data set hydro breaklines. function: (CI_OnLineFunctionCode) download role: (inapplicable) citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://coast.noaa.gov/htdata/lidar2_z/geoid18/data/9174/supplemental/ protocol: WWW:LINK-1.0-http--link name: Lidar Reports description: Link to the data set reports. function: (CI_OnLineFunctionCode) download role: (inapplicable) 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: NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) description: The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer. function: (CI_OnLineFunctionCode) download role: (inapplicable) presentationForm: (unknown) abstract: This data set is tiled lidar point cloud LAS files v1.4, for the 2016 Alabama 25 County lidar area of interest (AOI). USGS NGTOC task order G17PD00243 required Spring 2017 LiDAR surveys to be collected over 18,845 square miles covering part or all of 25 counties in Alabama. These counties are Autauga, Baldwin, Barbour, Bullock, Butler, Chambers, Cherokee, Clarke, Conecuh, Covington, Crenshaw, Elmore, Etowah, Henry, Houston, Lamar, Limestone, Macon, Monroe, Pike, Randolph, Russell, Shelby, Tallapoosa, and Winston. Aerial LiDAR data for this task order was planned, acquired, processed, and produced at an aggregate nominal pulse spacing (ANPS) of 0.7 meters and in compliance with USGS National Geospatial Program LiDAR Base Specification version 1.2. The data are divided up in 8 blocks. Please see the kmz provided in the URL section of this metadata record for the block footprints. Block 1 - Lamar, Limestone, Winston Counties Block 2 - Cherokee, Etowah, Shelby Counties Block 3 - Chambers, Randolph, Tallapoosa (partial) Counties Block 4 - Autauga, Barbour (partial), Bullock (partial), Elmore, Macon, Russell Counties Block 5 - Barbour (partial), Bullock (partial), Henry, Houston Counties Block 6 - Barbour (partial), Bullock, (partial), Butler (partial), Conecuh (partial), Covington, Crenshaw, Pike Counties Block 7 - Baldwin (partial), Butler (partial), Clarke, Conecuh (partial), Monroe Counties Block 8 - Baldwin County (partial) Isolated gaps in GPS data were identified in several missions covering this project. As both, the IMU data and pulse data, were present across these gaps, using the fixed positions of the GPS on either end, the aircraft velocity across the gaps, and the IMU data, LiDAR calibration staff were able to reach an effective solution to address the GPS voids. Because these gaps were not uniform in size or correction, this extended the iterative LiDAR calibration efforts on this project. Subsequent rigorous data checking confirmed adequate results to meet the required accuracy specs. The USGS QA Team already reviewed affected data (blocks) for this project and found no QA/QC discrepancies to report regarding those gaps. Geographic Extent: This data set is consisting of lidar point cloud, classified lidar, digital elevation model, and lidar intensity images which all pieces encompasses the 2016 Alabama 25 County lidar (Pilot) area of interest (AOI), approximately 18,845 square miles or 48,408 square kilometers. Data set Description: This data set consists of lidar point cloud LAS swath files and tiled LAS files. Each LAS file contains lidar point information, which has been calibrated, controlled, and classified. Each file represents a separate swath of lidar. Ground Conditions: water at normal levels; no unusual inundation; no snow; leaf off How the Withheld Points are Identified: Withheld (ignore) points were identified in the files using the standard LAS Withheld bit. Class Code:1 Class Item:Unclassified Class Code:2 Class Item:Ground Class Code:7 Class Item:Low Noise Class Code:9 Class Item:Water Class Code:10 Class Item:Ignored Ground Class Code:17 Class Item:Bridges Class Code:18 Class Item:High Noise The NOAA Office for Coastal Management (OCM) downloaded the laz files from these USGS sites and processed the data to the Data Access Viewer (DAV) and to https. The total number of files downloaded and processed was 23,054. ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B1_2017/ Number of files: 2305 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B2_2017/ Number of files: 2500 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B3_2017/ Number of files: 2243 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B4_2017/ Number of files: 3765 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B5_2017/ Number of files: 2505 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B6_2017/ Number of files: 3778 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B7_2017/ Number of files: 3879 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B8_2017/ Number of files: 2075 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/AL_25_County_Lidar_2017_B17/ Number of files: 4 The hydro breaklines were also downloaded from these USGS sites and are available for download at the link provided in the URL section of this metadata record. Please note that these products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA or OCM. ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/AL_25_County_Lidar_2017_B17/AL_25Co_B1_2017/breaklines/ ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/AL_25_County_Lidar_2017_B17/AL_25Co_B2_2017/breaklines/ ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/AL_25_County_Lidar_2017_B17/AL_25Co_B3_2017/breaklines/ ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/AL_25_County_Lidar_2017_B17/AL_25Co_B4_2017/breaklines/ ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/AL_25_County_Lidar_2017_B17/AL_25Co_B5_2017/breaklines/ ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/AL_25_County_Lidar_2017_B17/AL_25Co_B6_2017/breaklines/ ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/AL_25_County_Lidar_2017_B17/AL_25Co_B7_2017/breaklines/ ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/AL_25_County_Lidar_2017_B17/AL_25Co_B8_2017/breaklines/ ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/AL_25 20County 20Lidar_2017_B17/AL_25Co_TL_2017/breaklines/ This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data. purpose: The primary purpose of the lidar survey was to establish measurements of the bare earth surface, as well as top surface feature data for providing geometric inputs for modeling, other numerical modeling and economic related assessments. credit: Atlantic The custom download may be cited as National Oceanic and Atmospheric Administration (NOAA) Digital Coast Data Access Viewer. Charleston, SC: NOAA Office for Coastal Management. Accessed Aug 01, 2023 at https://coast.noaa.gov/dataviewer. 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://coast.noaa.gov/htdata/lidar2_z/geoid18/data/9174/supplemental/16113_AL_BAA_25_Counties_LiDAR_Blocks.kmz fileDescription: This graphic displays the boundaries of each of the eight blocks that make up this data set. fileType: kmz graphicOverview: (MD_BrowseGraphic) fileName: https://coast.noaa.gov/htdata/lidar2_z/geoid18/data/9174/supplemental/al2017_25county_m9174.kmz fileDescription: This graphic displays the footprint for this lidar data set. fileType: KML descriptiveKeywords: (MD_Keywords) keyword: EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION type: (MD_KeywordTypeCode) theme thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Science Keywords date: (missing) edition: 12.3 descriptiveKeywords: (MD_Keywords) keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALABAMA keyword: VERTICAL LOCATION > LAND SURFACE type: (MD_KeywordTypeCode) place thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Location Keywords date: (missing) edition: 12.3 descriptiveKeywords: (MD_Keywords) keyword: LIDAR > Light Detection and Ranging type: (MD_KeywordTypeCode) instrument thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Instrument Keywords date: (missing) edition: 14.9 descriptiveKeywords: (MD_Keywords) keyword: Airplane > Airplane type: (MD_KeywordTypeCode) platform thesaurusName: (CI_Citation) title: Global Change Master Directory (GCMD) Platform Keywords date: (missing) edition: 14.9 descriptiveKeywords: (MD_Keywords) keyword: DEM keyword: Elevation Data keyword: Intensity Image keyword: Lidar keyword: Topography keyword: beach keyword: digital elevation model keyword: erosion keyword: laser type: (MD_KeywordTypeCode) theme descriptiveKeywords: (MD_Keywords) keyword: Continent > North America > United States Of America > Alabama > Autauga County keyword: Continent > North America > United States Of America > Alabama > Baldwin County keyword: Continent > North America > United States Of America > Alabama > Barbour County keyword: Continent > North America > United States Of America > Alabama > Bullock County keyword: Continent > North America > United States Of America > Alabama > Butler County keyword: Continent > North America > United States Of America > Alabama > Chambers County keyword: Continent > North America > United States Of America > Alabama > Cherokee County keyword: Continent > North America > United States Of America > Alabama > Clarke County keyword: Continent > North America > United States Of America > Alabama > Conecuh County keyword: Continent > North America > United States Of America > Alabama > Covington County keyword: Continent > North America > United States Of America > Alabama > Crenshaw County keyword: Continent > North America > United States Of America > Alabama > Elmore County keyword: Continent > North America > United States Of America > Alabama > Etowah County keyword: Continent > North America > United States Of America > Alabama > Henry County keyword: Continent > North America > United States Of America > Alabama > Houston County keyword: Continent > North America > United States Of America > Alabama > Lamar County keyword: Continent > North America > United States Of America > Alabama > Limestone County keyword: Continent > North America > United States Of America > Alabama > Macon County keyword: Continent > North America > United States Of America > Alabama > Monroe County keyword: Continent > North America > United States Of America > Alabama > Pike County keyword: Continent > North America > United States Of America > Alabama > Randolph County keyword: Continent > North America > United States Of America > Alabama > Russell County keyword: Continent > North America > United States Of America > Alabama > Shelby County keyword: Continent > North America > United States Of America > Alabama > Tallapoosa County keyword: Continent > North America > United States Of America > Alabama > Winston County keyword: U.S. Coastline 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_LegalConstraints) useConstraints: (MD_RestrictionCode) otherRestrictions otherConstraints: Cite As: OCM Partners, [Date of Access]: 2016 - 2019 USGS Lidar: Alabama 25 County [Data Date Range], https://www.fisheries.noaa.gov/inport/item/64305. 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. | Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of 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: 64305 citedResponsibleParty: (CI_ResponsibleParty) organisationName: (inapplicable) contactInfo: (CI_Contact) onlineResource: (CI_OnlineResource) linkage: https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocmp/dmp/pdf/64305.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 environmentDescription: CloudPro 1.2.0 Build 85620; GeoCue Version 2014.1.21.2; Windows 7 Operating System \\lidarsrv\GC_Warehouse_5\80658\30\*.las 184 GB extent: (EX_Extent) description: Overall data set, including all 8 blocks. geographicElement: (EX_GeographicBoundingBox) westBoundLongitude: -88.29664 eastBoundLongitude: -84.82097 southBoundLatitude: 30.20865 northBoundLatitude: 34.999031 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: Overall dates of collection for all blocks. | Currentness: Ground Condition beginPosition: 2016-12-02 endPosition: 2019-11-12 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: Dates of collection for Block 1 - Lamar, Limestone, Winston Counties | Currentness: Ground Condition beginPosition: 2016-12-02 endPosition: 2017-02-15 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: Dates of collection for Block 2 - Cherokee, Etowah, Shelby Counties | Currentness: Ground Condition beginPosition: 2016-12-28 endPosition: 2017-03-09 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: Dates of collection for Block 3 - Chambers, Randolph, Tallapoosa (partial) Counties | Currentness: Ground Condition beginPosition: 2017-02-26 endPosition: 2017-11-20 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: Dates of collection for Block 4 - Autauga, Barbour (partial), Bullock (partial), Elmore, Russell Counties | Currentness: Ground Condition beginPosition: 2017-02-17 endPosition: 2017-04-02 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: Dates of collection for Block 5 - Barbour (partial), Bullock (partial), Henry, Houston Counties | Currentness: Ground Condition beginPosition: 2017-03-16 endPosition: 2017-04-02 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: Dates of collection for Block 6 - Barbour (partial), Bullock (partial), Butler (partial), Conecuh (partial), Covington, Crenshaw, Pike Counties | Currentness: Ground Condition beginPosition: 2017-03-19 endPosition: 2018-12-18 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: Dates of collection for Block 7 - Baldwin (partial), Butler (partial), Clarke, Conecuh (partial), Monroe Counties | Currentness: Ground Condition beginPosition: 2018-01-02 endPosition: 2018-01-19 temporalElement: (EX_TemporalExtent) extent: TimePeriod: description: Dates of collection for Block 8 - Baldwin (partial) | Currentness: Ground Condition beginPosition: 2018-01-14 endPosition: 2018-12-17 supplementalInformation: All lidar data was acquired, calibrated, and used in the creation of lidar derived products by Atlantic. The following are the USGS lidar fields in JSON: { "ldrinfo" : { "ldrspec" : "USGS-NGP Base Lidar Specification v1.2", "ldrsens" : "Leica ALS70-HP", "ldrmaxnr" : "unlimited", "ldrnps" : "0.71 ", "ldrdens" : "2.2 ", "ldranps" : "0. ", "ldradens" : "4.50 ", "ldrfltht" : "2,000 ", "ldrfltsp" : "130", "ldrscana" : "45", "ldrscanr" : "35.1", "ldrpulsr" : "264,800", "ldrpulsd" : "4", "ldrpulsw" : "0.50", "ldrwavel" : "1064", "ldrmpia" : "1", "ldrbmdiv" : "0.15", "ldrswatw" : "1,663", "ldrswato" : "20", "ldrgeoid" : "National Geodetic Survey (NGS) Geoid12B" }, "ldraccur" : { "ldrchacc" : "0.321", "rawnva" : "-999999", "rawnvan" : "-999999", "clsnva" : "0.087", "clsnvan" : "353", "clsvva" : ".1154", "clsvvan" : "287" }, "lasinfo" : { "lasver" : "1.4", "lasprf" : "6", "laswheld" : "Withheld (ignore) points were identified in these files using the standard LAS Withheld bit.", "lasolap" : "Swath "overage" points were identified in these files using the standard LAS overlap bit.", "lasintr" : "11", "lasclass" : { "clascode" : "1", "clasitem" : "Unclassified" }, "lasclass" : { "clascode" : "2", "clasitem" : "Ground" }, "lasclass" : { "clascode" : "7", "clasitem" : "Low Noise" }, "lasclass" : { "clascode" : "9", "clasitem" : "Water" }, "lasclass" : { "clascode" : "10", "clasitem" : "Ignored Ground" }, "lasclass" : { "clascode" : "17", "clasitem" : "Bridges" }, "lasclass" : { "clascode" : "18", "clasitem" : "High Noise" } }} return to top contentInfo: (MD_FeatureCatalogueDescription) complianceCode: false language: LanguageCode: eng includedWithDataset: false featureCatalogueCitation: (CI_Citation) title: Lidar tiles and associated derived products for USGS date: (unavailable) return to top distributionInfo: (MD_Distribution) distributionFormat: (MD_Format) name: Zip version: (missing) fileDecompressionTechnique: Zip distributionFormat: (MD_Format) name: LAZ version: (missing) 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=9174/details/9174 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. A new metadata will be produced to reflect your request using this record as a base. Change to an orthometric vertical datum is one of the many options. function: (CI_OnLineFunctionCode) download transferOptions: (MD_DigitalTransferOptions) onLine: (CI_OnlineResource) linkage: http://coast.noaa.gov/htdata/lidar2_z/geoid18/data/9174 protocol: WWW:LINK-1.0-http--link name: Bulk Download description: Bulk download of data files in LAZ format, geographic coordinates, orthometric heights. Note that the vertical datum (hence elevations) of the files here are different than described in this document. They will be in an orthometric datum. function: (CI_OnLineFunctionCode) download return to top dataQualityInfo: (DQ_DataQuality) scope: (DQ_Scope) level: (MD_ScopeCode) dataset report: (DQ_AbsoluteExternalPositionalAccuracy) nameOfMeasure: Vertical Positional Accuracy evaluationMethodDescription: A total of 761 ground survey points were collected in support of this project, including 136 LiDAR Control Points (LCP), 340 Non-vegetated Vertical Accuracy (NVA) and 285 Vegetated Vertical Accuracy (VVA). Point cloud data accuracy was tested against a Triangulated Irregular Network (TIN) constructed from LiDAR points in clear and open areas. A clear and open area can be characterized with respect to topographic and ground cover variation such that a minimum of five (5) times the Nominal Pulse Spacing (NPS) exists with less than 1/3 of the RMSEZ deviation from a low-slope plane. Slopes that exceed ten (10) percent were avoided. The NVA value is a requirement that must be met, regardless of any allowed “busts” in the VVA(s) for individual land cover types within the project. Checkpoints for each assessment (NVA and VVA) are required to be well-distributed throughout the land cover type, for the entire project area. Each land cover type representing ten (10) percent or more of the total project area were tested and reported with a VVA. In land cover categories other than dense urban areas, the tested points did not have obstructions forty-five (45) degrees above the horizon to ensure a satisfactory TIN surface. The VVA value is provided as a target. It is understood that in areas of dense vegetation, swamps, or extremely difficult terrain, this value may be exceeded. Vertical Accuracy of the point cloud and bare-earth lidar data was assessed and reported in accordance with the ASPRS Positional Accuracy Standards for Digital Geospatial Data; Required Non Vegetated Vertical Accuracy (NVA) : 0.196m Required Vegetated Vertical Accuracy (VVA): 0.294 m. This data set was tested to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 10.0 (cm) RMSEz Vertical Accuracy Class. Actual NVA accuracy of the bare-earth was found to be RMSEz = 0.0817 m, equating to +/- 0.1601 m at 95% confidence level. Actual VVA accuracy was found to be RMSEz = 0.1192 m, equating to +/- 0.2335 m at the 95th percentile. result: (missing) report: (DQ_CompletenessCommission) nameOfMeasure: Completeness Report evaluationMethodDescription: The raw LAS data files included all data points collected. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. The raw point cloud is of good quality and data passes Fundamental Vertical Accuracy specifications.Void areas (i.e., areas outside the project boundary but within the tiling scheme) are coded using a unique NODATA value. This value is identified in the appropriate location within the file header. result: (missing) report: (DQ_ConceptualConsistency) nameOfMeasure: Conceptual Consistency evaluationMethodDescription: All lidar data and lidar derived data covers the entire 18,845 square miles area of interest for the pilot area. All lidar point cloud tiles show no edge artifacts or mismatches from tile to tile. Void areas (i.e. areas outside the project boundary but within the tiling scheme) are coded using a unique NODATA value. This value is identified in the appropriate location within the file header. Data cover the entire area specified for this project. result: (missing) lineage: (LI_Lineage) statement: Atlantic collected lidar data for the USGS Alabama 25 County data set. This data was made available on the USGS rockyftp site. NOAA OCM downloaded the laz data to process to the Data Access Viewer to make available for free custom and bulk downloads. processStep: (LI_ProcessStep) description: Ground Control Survey A total of 761 ground survey points were collected in support of this project, including 136 LiDAR Control Points (LCP), 340 Non-vegetated Vertical Accuracy (NVA) and 285 Vegetated Vertical Accuracy (VVA). Point cloud data accuracy was tested against a Triangulated Irregular Network (TIN) constructed from LiDAR points in clear and open areas. A clear and open area can be characterized with respect to topographic and ground cover variation such that a minimum of five (5) times the Nominal Pulse Spacing (NPS) exists with less than 1/3 of the RMSEZ deviation from a low-slope plane. Slopes that exceed ten (10) percent were avoided. Each land cover type representing ten (10) percent or more of the total project area were tested and reported with a VVA. In land cover categories other than dense urban areas, the tested points did not have obstructions forty-five (45) degrees above the horizon to ensure a satisfactory TIN surface. The VVA value is provided as a target. It is understood that in areas of dense vegetation, swamps, or extremely difficult terrain, this value may be exceeded. The NVA value is a requirement that must be met, regardless of any allowed “busts” in the VVA(s) for individual land cover types within the project. Checkpoints for each assessment (NVA and VVA) are required to be well-distributed throughout the land cover type, for the entire project area. dateTime: DateTime: 2019-11-10T00:00:00 processStep: (LI_ProcessStep) description: Aerial Lidar Acquisition: Atlantic acquired 882 passes of the AOI as a series of perpendicular and/or adjacent flight-lines executed in 83 flight missions conducted between December 28, 2016 and November 10, 2019. Onboard differential Global Navigation Satellite System (GNSS) unit(s) recorded sample aircraft positions at 2 hertz (Hz) or more frequency. LiDAR data was only acquired when a minimum of six (6) satellites were in view. dateTime: DateTime: 2019-11-10T00:00:00 processStep: (LI_ProcessStep) description: LiDAR Point Cloud Generation Atlantic utilized Leica software products to download the IPAS ABGNSS/IMU data and raw laser scan files from the airborne system. Waypoint Inertial Explorer is used to extract the raw IPAS ABGNSS/IMU data, which is further processed in combination with controlled base stations to provide the final Smoothed Best Estimate Trajectory (SBET) for each mission. The SBETs are combined with the raw laser scan files to export the LiDAR ASCII Standard (*.las) formatted swath point clouds. dateTime: DateTime: 2019-11-10T00:00:00 processStep: (LI_ProcessStep) description: Smooth Surface Repeatability (Interswath) Departures from planarity of first returns within single swaths in non-vegetated areas were assessed at multiple locations with hard surface areas (parking lots or large rooftops) inside the project area. Each area was evaluated using signed difference rasters (maximum elevation – minimum elevation) at a cell size equal to 2 x ANPS, rounded to the next integer. The following figure depicts a sample of the assessment. dateTime: DateTime: 2019-11-10T00:00:00 processStep: (LI_ProcessStep) description: LiDAR Calibration Using a combination of GeoCue, TerraScan and TerraMatch; overlapping swath point clouds are corrected for any orientation or linear deviations to obtain the best fit swath-to-swath calibration. Relative calibration was evaluated using advanced plane-matching analysis and parameter corrections derived. This process was repeated interactively until residual errors between overlapping swaths, across all project missions, was reduced to ≤2cm. A final analysis of the calibrated LiDAR is preformed using a TerraMatch tie line report for an overall statistical model of the project area. Individual control point assessments for this project can be found in Section VI of this report. Upon completion of the data calibration, a complete set of elevation difference intensity rasters (dZ Orthos) are produced. A user-defined color ramp is applied depicting the offsets between overlapping swaths based on project specifications. The dZ orthos provide an opportunity to review the data calibration in a qualitative manner. Atlantic assigns green to all offset values that fall below the required RMSDz requirement of the project. A yellow color is assigned for offsets that fall between the RMSDz value and 1.5x of that value. Finally, red values are assigned to all values that fall beyond 1.5x of the RMSDz requirements of the project. dateTime: DateTime: 2019-11-10T00:00:00 processStep: (LI_ProcessStep) description: Lidar Classification: The calibrated Lidar data was run through automated classification routines and then manually checked and edited. The data was classified into the following classes: 1-unclassified*, 2-ground, 7-low noise, 9-water, 10-ignored ground, 17-bridges, and 18-high noise dateTime: DateTime: 2019-11-10T00:00:00 processStep: (LI_ProcessStep) description: Lidar Intensity Imagery Creation: All lidar intensity imagery was created from the final calibrated and classified lidar point cloud. Intensity images were produced from all classified points and are posted to a 1 meter cell size. Intensity images were cut to match the tile index and have corresponding names to match tile names. dateTime: DateTime: 2019-11-10T00:00:00 processStep: (LI_ProcessStep) description: The NOAA Office for Coastal Management (OCM) downloaded the laz files from these USGS sites and processed the data to the Data Access Viewer (DAV) and to https. The total number of files downloaded and processed was 23,054. ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B1_2017/ Number of files: 2305 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B2_2017/ Number of files: 2500 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B3_2017/ Number of files: 2243 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B4_2017/ Number of files: 3765 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B5_2017/ Number of files: 2505 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B6_2017/ Number of files: 3778 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B7_2017/ Number of files: 3879 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_AL_25Co_B8_2017/ Number of files: 2075 ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/AL_25_County_Lidar_2017_B17/ Number of files: 4 The data were in UTM Zone 16 (NAD83 2011), meters, coordinates and NAVD88 (Geoid12B) elevations in meters. The data were classified as: 1 - Unclassified, 2 - Ground, 7 - Low Noise, 9 - Water, 10 - Ignored Ground, 17 - Bridge Decks, 18 - High Noise. OCM processed all classifications of points to the Digital Coast Data Access Viewer (DAV). Classes available on the DAV are: 1, 2, 7, 9, 10, 17, 18. OCM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. An internal OCM script was run to check the number of points by classification and by flight ID and the gps and intensity ranges. This script found a file (USGS_LPC_AL_25Co_B2_2017_16S_FC_2160.laz) in Block 2 that had a bad point. The point had a bad longitude value. The point was deleted from the file before processing. 2. Internal OCM scripts were run on the laz files to convert from orthometric (NAVD88) elevations to ellipsoid elevations using the Geoid12B model, to convert from UTM Zone 16 (NAD83 2011) coordinates in meters to geographic coordinates, to assign the geokeys, to sort the data by gps time and zip the data to database and to http. dateTime: DateTime: 2021-02-22T00:00:00 processor: (CI_ResponsibleParty) organisationName: Office for Coastal Management role: (CI_RoleCode) processor source: (LI_Source) sourceCitation: (CI_Citation) title: Atlantic date: (missing) source: (LI_Source) sourceCitation: (CI_Citation) title: USGS date: (missing) processStep: (LI_ProcessStep) description: The vertical values in this data set have been converted to reference North American Vertical Datum of 1988 (NAVD88) (GEOID18) meters, using the GEOID18 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: 2023-08-01T07:22:17 processor: (CI_ResponsibleParty) individualName: NOAA Office for Coastal Management contactInfo: (CI_Contact) address: (CI_Address) electronicMailAddress: coastal.info@noaa.gov role: (CI_RoleCode) processor | |