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Topographic lidar survey of the Chandeleur Islands, Louisiana, February 6, 2012

June 4, 2014

This Data Series Report contains lidar elevation data collected February 6, 2012, for Chandeleur Islands, Louisiana. Point cloud data in lidar data exchange format (LAS) and bare earth digital elevation models (DEMs) in ERDAS Imagine raster format (IMG) are available as downloadable files. The point cloud data—data points described in three dimensions—were processed to extract bare earth data; therefore, the point cloud data are organized into the following classes: 1– and 17–unclassified, 2–ground, 9–water, and 10–breakline proximity. Digital Aerial Solutions, LLC, (DAS) was contracted by the U.S. Geological Survey (USGS) to collect and process these data.

The lidar data were acquired at a horizontal spacing (or nominal pulse spacing) of 0.5 meters (m) or less. The USGS conducted two ground surveys in small areas on the Chandeleur Islands on February 5, 2012. DAS calculated a root mean square error (RMSEz) of 0.034 m by comparing the USGS ground survey point data to triangulated irregular network (TIN) models built from the lidar elevation data.

This lidar survey was conducted to document the topography and topographic change of the Chandeleur Islands. The survey supports detailed studies of Louisiana, Mississippi and Alabama barrier islands that resolve annual and episodic changes in beaches, berms and dunes associated with processes driven by storms, sea-level rise, and even human restoration activities. These lidar data are available to Federal, State and local governments, emergency-response officials, resource managers, and the general public.

Publication Year 2014
Title Topographic lidar survey of the Chandeleur Islands, Louisiana, February 6, 2012
DOI 10.3133/ds840
Authors Kristy K. Guy, Nathaniel G. Plant, Jamie M. Bonisteel-Cormier
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Data Series
Series Number 840
Index ID ds840
Record Source USGS Publications Warehouse
USGS Organization St. Petersburg Coastal and Marine Science Center