gov.noaa.nmfs.inport:50099 eng UTF8 dataset OCM Partners resourceProvider NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact 2026-04-30T00:00:00 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) 2003 U.S. Geological Survey (USGS) Experimental Advanced Airborne Research Lidar (EAARL): US Virgin Islands (St. John, St. Croix) usgs2003_usvi_topobathy_m566_metadata 2011 publication NOAA/NMFS/EDM 50099 https://www.fisheries.noaa.gov/inport/item/50099 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://coast.noaa.gov WWW:LINK-1.0-http--link Citation URL Online Resource download https://coast.noaa.gov/dataviewer WWW:LINK-1.0-http--link Citation URL Online Resource download This data set contains topographic and bathymetric lidar data that were collected on April 21, 23, 30, May 2, and June 14, 17 of 2003, cooperatively by the U.S. Geological Survey (USGS), National Aeronautics and Space Administration (NASA), and National Park Service (NPS). The data is for part of the U.S. Virgin Islands (island of St. John and a portion of the northern coastline of St. Croix). The bathymetric lidar data are classified as 11 and the topographic lidar data are classified as 0. A first surface and submerged topography elevation map (also known as a Digital Elevation Model, or DEM) of a portion of the U.S. Virgin Islands (island of St. John and a portion of the northern coastline of St. Croix) was produced from remotely sensed, geographically referenced elevation measurements cooperatively by the U.S. Geological Survey (USGS), National Aeronautics and Space Administration (NASA), and National Park Service (NPS). Elevation measurements were collected over the area using the NASA Experimental Advanced Airborne Research Lidar (EAARL), a pulsed-laser ranging system mounted onboard an aircraft to measure ground elevation, vegetation canopy, and coastal topography. The system uses high frequency laser beams directed at the Earth's surface through an opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The plane travels over the target area at approximately 50 meters per second at an elevation of approximately 300 meters. The EAARL, developed by NASA at Wallops Flight Facility in Virginia, measures ground elevation with a vertical resolution of 15 centimeters. A sampling rate of 3 kilohertz or higher results in an extremely dense spatial elevation dataset. Over 100 kilometers of coastline can be surveyed easily within a 3- to 4-hour mission. When subsequent elevation maps for an area are analyzed, they provide a useful tool to make management decisions regarding land development. Original contact information: Contact Name: Amar Nayegandhi Contact Org: Jacobs Technology, U.S. Geological Survey, FISC, St. Petersburg, FL Title: Computer Scientist Phone: 727-803-8747 (x3026) Email: anayegandhi@usgs.gov The purpose of this project was to produce a highly detailed and accurate first surface and submerged topography elevation map of a portion of the U.S. Virgin Islands. The U.S. Geological Survey, National Park Service, and National Aeronautics and Space Administration request to be acknowledged as originators of this data in future products or derivative research. Acknowledgment of the U.S. Geological Survey, Florida Integrated Science Center, as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected. Sharing of new data layers developed directly from these data would also be appreciated by the U.S. Geological Survey staff. Users should be aware that comparisons with other datasets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photo interpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such. completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information custodian notPlanned ALPS EAARL theme 2003 temporal Lidar - partner (no harvest) project InPort otherRestrictions Cite As: OCM Partners, [Date of Access]: 2003 U.S. Geological Survey (USGS) Experimental Advanced Airborne Research Lidar (EAARL): US Virgin Islands (St. John, St. Croix) [Data Date Range], https://www.fisheries.noaa.gov/inport/item/50099. 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. otherRestrictions Access Constraints: None otherRestrictions 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. otherRestrictions Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of the USGS, the Office for Coastal Management or its partners. unclassified Unclassified None vector eng; US elevation Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350 -64.819269 -64.607852 17.746823 18.373668 | Currentness: Ground Condition 2003-04-21 | Currentness: Ground Condition 2003-04-23 | Currentness: Ground Condition 2003-04-30 | Currentness: Ground Condition 2003-05-02 | Currentness: Ground Condition 2003-06-14 | Currentness: Ground Condition 2003-06-17 Raw Lidar data are not in a format that is generally usable by Park Service resource managers and scientists for scientific analysis. Converting dense Lidar elevation data into a readily usable format without loss of essential information requires specialized processing. The U.S. Geological Survey converts raw Lidar data into a GIS-compatible map product to be provided to National Park Service GIS specialists, managers, and scientists. The primary tool used in the conversion process is Airborne Lidar Processing System (ALPS), a multi-tiered processing system developed by a USGS-NASA collaborative project. Specialized processing algorithms are used to convert raw waveform Lidar data acquired by the EAARL to georeferenced spot (x, y, z) returns for "first surface" and "bare earth" topography. The development of custom software for creating these data products has been supported by the USGS CMG Program's Decision Support for Coastal Parks, Sanctuaries, and Preserves Project. Processed data products are used by the USGS CMG Program's National Assessments of Coastal Change Hazards Project to quantify the vulnerability of shorelines to coastal change hazards such as severe storms, sea-level rise, and shoreline erosion and retreat. A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/566/supplemental/2003_USGS_USVI_TopoBathy_Lidar.kmz false eng false The variables measured by EAARL are distance between aircraft and GPS satellites (m), attitude information (roll, pitch, heading in degrees), scan angle (degrees), second of the epoch (sec), and 1-ns time-resolved return intensity waveform (digital counts). Z value is referenced to orthometric elevations derived from National Geodetic Survey Geoid Model, GEOID03. NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information distributor https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=566 WWW:LINK-1.0-http--link Customized Download Create custom data files by choosing data area, product type, map projection, file format, datum, etc. download https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/566/index.html WWW:LINK-1.0-http--link Bulk Download Simple download of data files. download dataset Accuracy The expected accuracy of the measured variables is as follows: attitude within 0.07 degree, 3 cm nominal ranging accuracy, and vertical elevation accuracy of +/-15 cm for the topographic surface. Quality checks are built into the data-processing software. Horizontal Positional Accuracy Raw elevation measurements have been determined to be within 1-meter horizontal accuracy. Vertical Positional Accuracy Elevations of the DEM are vertically consistent with the point elevation data, +/-15 cm. Completeness Report Not Provided Conceptual Consistency When the data was received by the NOAA Office for Coastal Management, each file contained data located in a 2-km by 2-km tile, where the upper-left bound can be quickly assessed through the file name. The first 3 numbers in the file name represented the left-most UTM easting coordinate (e###000) in meters, the next 4 numbers represented the top-most UTM northing coordinate (n####000) in meters, and the last 2 numbers (##) represented the UTM zone in which the tile is located (for example, fs_e123_n4567_20). The data are collected using a Cessna 310 aircraft. The NASA Experimental Advanced Airborne Research Lidar (EAARL) laser scanner collects the data using a green (532-nm) raster scanning laser, while a digital camera acquires a visual record of the flight. The data are stored on hard drives and archived at the U.S. Geological Survey office in St. Petersburg, FL, and the NASA office at Wallops Flight Facility in Virginia. The navigational data are processed at Wallops Flight Facility. The navigational and raw data are then downloaded into the Airborne Lidar Processing System (ALPS). Data are converted from units of time to x,y,z points for elevation. The derived surface data can then be converted into raster data (GeoTIFFs). 2008-01-01T00:00:00 Metadata imported into ArcCatalog from XML file. 2008-07-29T00:00:00 The NOAA Office for Coastal Management (OCM) received the data in las format. The files contained LiDAR intensity and elevation measurements. OCM performed the following processing for data storage purposes and Digital Coast provisioning: 1. The data were converted from UTM (Zone 20) WGS84 coordinates to geographic NAD83 coordinates. 2. The bathy data were reclassified from 0 to 11 and the topo data were left at classification 0. 3. The data were converted from ITRF00 ellipsoid heights to GRS80 ellipsoid heights using Geoid03. 4. The data were sorted by latitude and the LAS header files were updated. 2011-02-01T00:00:00 Source Contribution: None | Source Geospatial Form: remote-sensing image | Type of Source Media: Point elevation measurements collected by the EAARL sensor. EAARL Coastal Topography--St. John, U.S. Virgin Islands 2003: First Surface 2008-01-01 publication 2003-04-21 Source Contribution: None | Source Geospatial Form: remote-sensing image | Type of Source Media: Point elevation measurements collected by the EAARL sensor. EAARL Submerged Topography--U.S. Virgin Islands 2003 2008-01-01 publication 2003-04-21