EAARL-B Submerged Topography - Saint Croix and Saint Thomas, U.S. Virgin Islands, 2014

Binary point-cloud data for part of the submerged environs of Saint Croix and Saint Thomas, U.S. Virgin Islands, were produced from remotely sensed, geographically referenced elevation measurements by the U.S. Geological Survey in collaboration with the National Oceanic and Atmospheric Administration's Coral Reef Conservation Program. Elevation measurements were collected over the area using the second-generation Experimental Advanced Airborne Research Lidar, 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 55 meters per second at an elevation of approximately 300 meters, resulting in a laser swath of approximately 240 meters with an average point spacing of 0.5-1.6 meters. The nominal vertical elevation accuracy expressed as the root mean square error (RMSE) is 13.5 centimeters on Saint Croix. Data were insufficient to calculate the nominal vertical elevation accuracy expressed as the root mean square error (RMSE) on Saint Thomas. A peak sampling rate of 15-30 kilohertz results in an extremely dense spatial elevation dataset. More than 100 kilometers of coastline can be surveyed easily within a 3- to 4-hour mission. When resultant elevation maps for an area are analyzed, they provide a useful tool to make management decisions regarding land development. Original contact information: Contact Name: Xan Fredericks Contact Org: Cherokee Nation Technology Solutions, U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL Title: Lidar Validation and Processing Analyst Phone: 727 502-8086 Email: afredericks@usgs.gov

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Field Value
Last Updated January 3, 2020, 01:25
Created January 3, 2020, 01:25
access_constraints ["Access Constraints: None | Use Constraints: The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research. | Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of USGS, USDA NRCS, NOAA, the Office for Coastal Management or its partners."]
bbox-east-long -64.41490881
bbox-north-lat 18.369432
bbox-south-lat 17.75629702
bbox-west-long -65.27130878
contact-email coastal.info@noaa.gov
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2015-07-25"}]
frequency-of-update notPlanned
graphic-preview-description Browse graphic
graphic-preview-file https://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4940/supplemental/usvi2014_eaarlb_m4940.kmz
graphic-preview-type kmz
guid gov.noaa.nmfs.inport:48140
licence ["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."]
metadata-date 2019-10-22T00:00:00
metadata-language eng
progress completed
resource-type dataset
responsible-party [{"name": "NOAA Office for Coastal Management", "roles": ["pointOfContact", "custodian"]}]
spatial {"type": "Polygon", "coordinates": [[[-65.27130878, 17.75629702], [-64.41490881, 17.75629702], [-64.41490881, 18.369432], [-65.27130878, 18.369432], [-65.27130878, 17.75629702]]]}
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