Topobathymetric Lidar Survey of Breton and Gosier Islands, Louisiana, January 16 and 18, 2014

• Main Authors: Joseph F. Terrano, James G. Flocks, Kathryn E. Smith
• Format: Dataset
• Language: unknown
• Published: USGS Science Data Catalog 2016
• Subjects: elevation; Elevation data; LiDAR; Light Detection and Ranging; LAS Point Cloud; Topography; Bathymetry; Topobathy; Depth; DEM; Digital Elevation Model; Intensity Image; remote sensing; shoreline; LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION; OCEAN > COASTAL PROCESSES > BARRIER ISLANDS; OCEAN > COASTAL PROCESSES > BEACHES; OCEAN > COASTAL PROCESSES > SHORELINE DISPLACEMENT; DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR; Breton Island; Plaquemines Parish; Louisiana; Gulf of Mexico; Barrier Islands
• Online Access: https://search.dataone.org/view/09858222-f1f2-4183-8a51-118ce948b76b

This dataset contains binary point-cloud data and a Digital Elevation Model (DEM), produced from remotely sensed, geographically referenced topobathymetric measurements collected by Photo Science, Inc., encompassing the Breton Island, LA study area. The original area of interest was buffered by 100 meters to ensure complete coverage, resulting in approximately 75 square miles of lidar data. The Breton Island Lidar project called for the planning, acquisition, processing, and derivative products of topobathymetric lidar data, collected at a nominal pulse spacing (NPS) of 0.5-0.45 meters (4-5 points/square meter). Lidar acquisition was prioritized to coincide with the lowest tide possible. Water clarity was also assessed and deemed acceptable prior to acquisition flights. The data, in meters, are projected to UTM Zone 16 North and referenced horizontally to the NAD83 (2011) datum and vertically to the NAVD88 (GEOID12A) datum. The classified point-cloud data were delivered in LAS v1.2 format and the merged DEM was converted to a GeoTIFF file. Each LAS file contains data in a 1-kilometer by 1-kilometer tile named according to the US National Grid conventions.